Instead of repeatedly calling tpm_chip_start/tpm_chip_stop when issuing commands to the tpm during initialization, just reserve the chip after wait_startup, and release it when we are ready to call tpm_chip_register.
Cc: Christian Bundy christianbundy@fraction.io Cc: Dan Williams dan.j.williams@intel.com Cc: Peter Huewe peterhuewe@gmx.de Cc: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com Cc: Jason Gunthorpe jgg@ziepe.ca Cc: Stefan Berger stefanb@linux.vnet.ibm.com Cc: stable@vger.kernel.org Cc: linux-intergrity@vger.kernel.org Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") Signed-off-by: Jerry Snitselaar jsnitsel@redhat.com --- drivers/char/tpm/tpm_tis_core.c | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-)
diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c index 8af2cee1a762..308756d278b3 100644 --- a/drivers/char/tpm/tpm_tis_core.c +++ b/drivers/char/tpm/tpm_tis_core.c @@ -978,13 +978,13 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq,
if (wait_startup(chip, 0) != 0) { rc = -ENODEV; - goto out_err; + goto out_start; }
/* Take control of the TPM's interrupt hardware and shut it off */ rc = tpm_tis_read32(priv, TPM_INT_ENABLE(priv->locality), &intmask); if (rc < 0) - goto out_err; + goto out_start;
intmask |= TPM_INTF_CMD_READY_INT | TPM_INTF_LOCALITY_CHANGE_INT | TPM_INTF_DATA_AVAIL_INT | TPM_INTF_STS_VALID_INT; @@ -993,9 +993,8 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq,
rc = tpm_chip_start(chip); if (rc) - goto out_err; + goto out_start; rc = tpm2_probe(chip); - tpm_chip_stop(chip); if (rc) goto out_err;
@@ -1059,7 +1058,6 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq, goto out_err; }
- tpm_chip_start(chip); chip->flags |= TPM_CHIP_FLAG_IRQ; if (irq) { tpm_tis_probe_irq_single(chip, intmask, IRQF_SHARED, @@ -1070,18 +1068,17 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq, } else { tpm_tis_probe_irq(chip, intmask); } - tpm_chip_stop(chip); } + tpm_chip_stop(chip);
rc = tpm_chip_register(chip); if (rc) - goto out_err; - - if (chip->ops->clk_enable != NULL) - chip->ops->clk_enable(chip, false); + goto out_start;
return 0; out_err: + tpm_chip_stop(chip); +out_start: if ((chip->ops != NULL) && (chip->ops->clk_enable != NULL)) chip->ops->clk_enable(chip, false);
On Wed Dec 11 19, Jerry Snitselaar wrote:
Instead of repeatedly calling tpm_chip_start/tpm_chip_stop when issuing commands to the tpm during initialization, just reserve the chip after wait_startup, and release it when we are ready to call tpm_chip_register.
Cc: Christian Bundy christianbundy@fraction.io Cc: Dan Williams dan.j.williams@intel.com Cc: Peter Huewe peterhuewe@gmx.de Cc: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com Cc: Jason Gunthorpe jgg@ziepe.ca Cc: Stefan Berger stefanb@linux.vnet.ibm.com Cc: stable@vger.kernel.org Cc: linux-intergrity@vger.kernel.org
Typo on the list address, do you want me to resend Jarkko?
Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") Signed-off-by: Jerry Snitselaar jsnitsel@redhat.com
I did some initial testing with both a 1.2 device and a 2.0 device here. Christian, can you verify that this still solves your timeouts problem you were seeing? Dan, can you try this on the internal system with the interrupt issues? I will see if I can get the t490s owner to run it as well.
Thanks, Jerry
On Wed, Dec 11, 2019 at 3:27 PM Jerry Snitselaar jsnitsel@redhat.com wrote:
On Wed Dec 11 19, Jerry Snitselaar wrote:
Instead of repeatedly calling tpm_chip_start/tpm_chip_stop when issuing commands to the tpm during initialization, just reserve the chip after wait_startup, and release it when we are ready to call tpm_chip_register.
Cc: Christian Bundy christianbundy@fraction.io Cc: Dan Williams dan.j.williams@intel.com Cc: Peter Huewe peterhuewe@gmx.de Cc: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com Cc: Jason Gunthorpe jgg@ziepe.ca Cc: Stefan Berger stefanb@linux.vnet.ibm.com Cc: stable@vger.kernel.org Cc: linux-intergrity@vger.kernel.org
Typo on the list address, do you want me to resend Jarkko?
Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") Signed-off-by: Jerry Snitselaar jsnitsel@redhat.com
I did some initial testing with both a 1.2 device and a 2.0 device here. Christian, can you verify that this still solves your timeouts problem you were seeing? Dan, can you try this on the internal system with the interrupt issues? I will see if I can get the t490s owner to run it as well.
Will do. I assume you'd also want to add 'Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's")' if it works?
On Wed Dec 11 19, Dan Williams wrote:
On Wed, Dec 11, 2019 at 3:27 PM Jerry Snitselaar jsnitsel@redhat.com wrote:
On Wed Dec 11 19, Jerry Snitselaar wrote:
Instead of repeatedly calling tpm_chip_start/tpm_chip_stop when issuing commands to the tpm during initialization, just reserve the chip after wait_startup, and release it when we are ready to call tpm_chip_register.
Cc: Christian Bundy christianbundy@fraction.io Cc: Dan Williams dan.j.williams@intel.com Cc: Peter Huewe peterhuewe@gmx.de Cc: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com Cc: Jason Gunthorpe jgg@ziepe.ca Cc: Stefan Berger stefanb@linux.vnet.ibm.com Cc: stable@vger.kernel.org Cc: linux-intergrity@vger.kernel.org
Typo on the list address, do you want me to resend Jarkko?
Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") Signed-off-by: Jerry Snitselaar jsnitsel@redhat.com
I did some initial testing with both a 1.2 device and a 2.0 device here. Christian, can you verify that this still solves your timeouts problem you were seeing? Dan, can you try this on the internal system with the interrupt issues? I will see if I can get the t490s owner to run it as well.
Will do. I assume you'd also want to add 'Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's")' if it works?
Yes. I'm not certain this deals with the interrupt issue though, so didn't want to stick it on there yet. I guess it should go on there anyways since it is replacing that code. I'll post a v2.
Instead of repeatedly calling tpm_chip_start/tpm_chip_stop when issuing commands to the tpm during initialization, just reserve the chip after wait_startup, and release it when we are ready to call tpm_chip_register.
Cc: Christian Bundy christianbundy@fraction.io Cc: Dan Williams dan.j.williams@intel.com Cc: Peter Huewe peterhuewe@gmx.de Cc: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com Cc: Jason Gunthorpe jgg@ziepe.ca Cc: Stefan Berger stefanb@linux.vnet.ibm.com Cc: stable@vger.kernel.org Cc: linux-integrity@vger.kernel.org Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's") Signed-off-by: Jerry Snitselaar jsnitsel@redhat.com --- v2: Fix integrity list address and add 5b359c7c4372 to fixes
drivers/char/tpm/tpm_tis_core.c | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-)
diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c index 8af2cee1a762..308756d278b3 100644 --- a/drivers/char/tpm/tpm_tis_core.c +++ b/drivers/char/tpm/tpm_tis_core.c @@ -978,13 +978,13 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq,
if (wait_startup(chip, 0) != 0) { rc = -ENODEV; - goto out_err; + goto out_start; }
/* Take control of the TPM's interrupt hardware and shut it off */ rc = tpm_tis_read32(priv, TPM_INT_ENABLE(priv->locality), &intmask); if (rc < 0) - goto out_err; + goto out_start;
intmask |= TPM_INTF_CMD_READY_INT | TPM_INTF_LOCALITY_CHANGE_INT | TPM_INTF_DATA_AVAIL_INT | TPM_INTF_STS_VALID_INT; @@ -993,9 +993,8 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq,
rc = tpm_chip_start(chip); if (rc) - goto out_err; + goto out_start; rc = tpm2_probe(chip); - tpm_chip_stop(chip); if (rc) goto out_err;
@@ -1059,7 +1058,6 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq, goto out_err; }
- tpm_chip_start(chip); chip->flags |= TPM_CHIP_FLAG_IRQ; if (irq) { tpm_tis_probe_irq_single(chip, intmask, IRQF_SHARED, @@ -1070,18 +1068,17 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq, } else { tpm_tis_probe_irq(chip, intmask); } - tpm_chip_stop(chip); } + tpm_chip_stop(chip);
rc = tpm_chip_register(chip); if (rc) - goto out_err; - - if (chip->ops->clk_enable != NULL) - chip->ops->clk_enable(chip, false); + goto out_start;
return 0; out_err: + tpm_chip_stop(chip); +out_start: if ((chip->ops != NULL) && (chip->ops->clk_enable != NULL)) chip->ops->clk_enable(chip, false);
On Wed, Dec 11, 2019 at 3:56 PM Jerry Snitselaar jsnitsel@redhat.com wrote:
Instead of repeatedly calling tpm_chip_start/tpm_chip_stop when issuing commands to the tpm during initialization, just reserve the chip after wait_startup, and release it when we are ready to call tpm_chip_register.
Cc: Christian Bundy christianbundy@fraction.io Cc: Dan Williams dan.j.williams@intel.com Cc: Peter Huewe peterhuewe@gmx.de Cc: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com Cc: Jason Gunthorpe jgg@ziepe.ca Cc: Stefan Berger stefanb@linux.vnet.ibm.com Cc: stable@vger.kernel.org Cc: linux-integrity@vger.kernel.org Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's")
Ugh, sorry, I guess this jinxed it. This patch does not address the IRQ storm on the platform I reported earlier.
On Wed, Dec 11, 2019 at 6:15 PM Dan Williams dan.j.williams@intel.com wrote:
On Wed, Dec 11, 2019 at 3:56 PM Jerry Snitselaar jsnitsel@redhat.com wrote:
Instead of repeatedly calling tpm_chip_start/tpm_chip_stop when issuing commands to the tpm during initialization, just reserve the chip after wait_startup, and release it when we are ready to call tpm_chip_register.
Cc: Christian Bundy christianbundy@fraction.io Cc: Dan Williams dan.j.williams@intel.com Cc: Peter Huewe peterhuewe@gmx.de Cc: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com Cc: Jason Gunthorpe jgg@ziepe.ca Cc: Stefan Berger stefanb@linux.vnet.ibm.com Cc: stable@vger.kernel.org Cc: linux-integrity@vger.kernel.org Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's")
Ugh, sorry, I guess this jinxed it. This patch does not address the IRQ storm on the platform I reported earlier.
Are the reverts making their way upstream?
On Wed, 2019-12-11 at 18:18 -0800, Dan Williams wrote:
On Wed, Dec 11, 2019 at 6:15 PM Dan Williams dan.j.williams@intel.com wrote:
On Wed, Dec 11, 2019 at 3:56 PM Jerry Snitselaar jsnitsel@redhat.com wrote:
Instead of repeatedly calling tpm_chip_start/tpm_chip_stop when issuing commands to the tpm during initialization, just reserve the chip after wait_startup, and release it when we are ready to call tpm_chip_register.
Cc: Christian Bundy christianbundy@fraction.io Cc: Dan Williams dan.j.williams@intel.com Cc: Peter Huewe peterhuewe@gmx.de Cc: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com Cc: Jason Gunthorpe jgg@ziepe.ca Cc: Stefan Berger stefanb@linux.vnet.ibm.com Cc: stable@vger.kernel.org Cc: linux-integrity@vger.kernel.org Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's")
Ugh, sorry, I guess this jinxed it. This patch does not address the IRQ storm on the platform I reported earlier.
Are the reverts making their way upstream?
Not yet.
Cannot randomly apply patches without answer to why. Given that some changes are already landed changes it would be better to create a patch based on reverts (in the sense of code change) and commit message what is going on.
/Jarkko
On Wed, 2019-12-11 at 16:54 -0700, Jerry Snitselaar wrote:
Instead of repeatedly calling tpm_chip_start/tpm_chip_stop when issuing commands to the tpm during initialization, just reserve the chip after wait_startup, and release it when we are ready to call tpm_chip_register.
Cc: Christian Bundy christianbundy@fraction.io Cc: Dan Williams dan.j.williams@intel.com Cc: Peter Huewe peterhuewe@gmx.de Cc: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com Cc: Jason Gunthorpe jgg@ziepe.ca Cc: Stefan Berger stefanb@linux.vnet.ibm.com Cc: stable@vger.kernel.org Cc: linux-integrity@vger.kernel.org Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's") Signed-off-by: Jerry Snitselaar jsnitsel@redhat.com
I pushed to my master with minor tweaks and added my tags.
Please check before I put it to linux-next.
/Jarkko
On Mon, Dec 16, 2019 at 4:59 PM Jarkko Sakkinen jarkko.sakkinen@linux.intel.com wrote:
On Wed, 2019-12-11 at 16:54 -0700, Jerry Snitselaar wrote:
Instead of repeatedly calling tpm_chip_start/tpm_chip_stop when issuing commands to the tpm during initialization, just reserve the chip after wait_startup, and release it when we are ready to call tpm_chip_register.
Cc: Christian Bundy christianbundy@fraction.io Cc: Dan Williams dan.j.williams@intel.com Cc: Peter Huewe peterhuewe@gmx.de Cc: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com Cc: Jason Gunthorpe jgg@ziepe.ca Cc: Stefan Berger stefanb@linux.vnet.ibm.com Cc: stable@vger.kernel.org Cc: linux-integrity@vger.kernel.org Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's") Signed-off-by: Jerry Snitselaar jsnitsel@redhat.com
I pushed to my master with minor tweaks and added my tags.
Please check before I put it to linux-next.
I don't see it yet here:
http://git.infradead.org/users/jjs/linux-tpmdd.git/shortlog/refs/heads/maste...
However, I wanted to make sure you captured that this does *not* fix the interrupt issue. I.e. make sure you remove the "Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's")" tag.
With that said, are you going to include the revert of:
1ea32c83c699 tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts 5b359c7c4372 tpm_tis_core: Turn on the TPM before probing IRQ's
...in your -rc3 pull?
On Mon Dec 16 19, Dan Williams wrote:
On Mon, Dec 16, 2019 at 4:59 PM Jarkko Sakkinen jarkko.sakkinen@linux.intel.com wrote:
On Wed, 2019-12-11 at 16:54 -0700, Jerry Snitselaar wrote:
Instead of repeatedly calling tpm_chip_start/tpm_chip_stop when issuing commands to the tpm during initialization, just reserve the chip after wait_startup, and release it when we are ready to call tpm_chip_register.
Cc: Christian Bundy christianbundy@fraction.io Cc: Dan Williams dan.j.williams@intel.com Cc: Peter Huewe peterhuewe@gmx.de Cc: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com Cc: Jason Gunthorpe jgg@ziepe.ca Cc: Stefan Berger stefanb@linux.vnet.ibm.com Cc: stable@vger.kernel.org Cc: linux-integrity@vger.kernel.org Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's") Signed-off-by: Jerry Snitselaar jsnitsel@redhat.com
I pushed to my master with minor tweaks and added my tags.
Please check before I put it to linux-next.
I don't see it yet here:
http://git.infradead.org/users/jjs/linux-tpmdd.git/shortlog/refs/heads/maste...
However, I wanted to make sure you captured that this does *not* fix the interrupt issue. I.e. make sure you remove the "Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's")" tag.
With that said, are you going to include the revert of:
1ea32c83c699 tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts
Dan, with the above reverted do you still get the screaming interrupt?
5b359c7c4372 tpm_tis_core: Turn on the TPM before probing IRQ's
...in your -rc3 pull?
On Mon, Dec 16, 2019 at 6:00 PM Jerry Snitselaar jsnitsel@redhat.com wrote:
On Mon Dec 16 19, Dan Williams wrote:
On Mon, Dec 16, 2019 at 4:59 PM Jarkko Sakkinen jarkko.sakkinen@linux.intel.com wrote:
On Wed, 2019-12-11 at 16:54 -0700, Jerry Snitselaar wrote:
Instead of repeatedly calling tpm_chip_start/tpm_chip_stop when issuing commands to the tpm during initialization, just reserve the chip after wait_startup, and release it when we are ready to call tpm_chip_register.
Cc: Christian Bundy christianbundy@fraction.io Cc: Dan Williams dan.j.williams@intel.com Cc: Peter Huewe peterhuewe@gmx.de Cc: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com Cc: Jason Gunthorpe jgg@ziepe.ca Cc: Stefan Berger stefanb@linux.vnet.ibm.com Cc: stable@vger.kernel.org Cc: linux-integrity@vger.kernel.org Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's") Signed-off-by: Jerry Snitselaar jsnitsel@redhat.com
I pushed to my master with minor tweaks and added my tags.
Please check before I put it to linux-next.
I don't see it yet here:
http://git.infradead.org/users/jjs/linux-tpmdd.git/shortlog/refs/heads/maste...
However, I wanted to make sure you captured that this does *not* fix the interrupt issue. I.e. make sure you remove the "Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's")" tag.
With that said, are you going to include the revert of:
1ea32c83c699 tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts
Dan, with the above reverted do you still get the screaming interrupt?
Yes, the screaming interrupt goes away, although it is replaced by these messages when the driver starts:
[ 3.725131] tpm_tis IFX0740:00: 2.0 TPM (device-id 0x1B, rev-id 16) [ 3.725358] tpm tpm0: tpm_try_transmit: send(): error -5 [ 3.725359] tpm tpm0: [Firmware Bug]: TPM interrupt not working, polling instead
If the choice is "error message + polled-mode" vs "pinning a cpu with interrupts" I'd accept the former, but wanted Jarkko with his maintainer hat to weigh in.
Is there a simple sanity check I can run to see if the TPM is still operational in this state?
On Mon, 2019-12-16 at 18:14 -0800, Dan Williams wrote:
On Mon, Dec 16, 2019 at 6:00 PM Jerry Snitselaar jsnitsel@redhat.com wrote:
On Mon Dec 16 19, Dan Williams wrote:
On Mon, Dec 16, 2019 at 4:59 PM Jarkko Sakkinen jarkko.sakkinen@linux.intel.com wrote:
On Wed, 2019-12-11 at 16:54 -0700, Jerry Snitselaar wrote:
Instead of repeatedly calling tpm_chip_start/tpm_chip_stop when issuing commands to the tpm during initialization, just reserve the chip after wait_startup, and release it when we are ready to call tpm_chip_register.
Cc: Christian Bundy christianbundy@fraction.io Cc: Dan Williams dan.j.williams@intel.com Cc: Peter Huewe peterhuewe@gmx.de Cc: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com Cc: Jason Gunthorpe jgg@ziepe.ca Cc: Stefan Berger stefanb@linux.vnet.ibm.com Cc: stable@vger.kernel.org Cc: linux-integrity@vger.kernel.org Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's") Signed-off-by: Jerry Snitselaar jsnitsel@redhat.com
I pushed to my master with minor tweaks and added my tags.
Please check before I put it to linux-next.
I don't see it yet here:
http://git.infradead.org/users/jjs/linux-tpmdd.git/shortlog/refs/heads/maste...
However, I wanted to make sure you captured that this does *not* fix the interrupt issue. I.e. make sure you remove the "Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's")" tag.
With that said, are you going to include the revert of:
1ea32c83c699 tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts
Dan, with the above reverted do you still get the screaming interrupt?
Yes, the screaming interrupt goes away, although it is replaced by these messages when the driver starts:
[ 3.725131] tpm_tis IFX0740:00: 2.0 TPM (device-id 0x1B, rev-id 16) [ 3.725358] tpm tpm0: tpm_try_transmit: send(): error -5 [ 3.725359] tpm tpm0: [Firmware Bug]: TPM interrupt not working, polling instead
If the choice is "error message + polled-mode" vs "pinning a cpu with interrupts" I'd accept the former, but wanted Jarkko with his maintainer hat to weigh in.
Is there a simple sanity check I can run to see if the TPM is still operational in this state?
What about T490S?
/Jarkko
On Tue Dec 17 19, Jarkko Sakkinen wrote:
On Mon, 2019-12-16 at 18:14 -0800, Dan Williams wrote:
On Mon, Dec 16, 2019 at 6:00 PM Jerry Snitselaar jsnitsel@redhat.com wrote:
On Mon Dec 16 19, Dan Williams wrote:
On Mon, Dec 16, 2019 at 4:59 PM Jarkko Sakkinen jarkko.sakkinen@linux.intel.com wrote:
On Wed, 2019-12-11 at 16:54 -0700, Jerry Snitselaar wrote:
Instead of repeatedly calling tpm_chip_start/tpm_chip_stop when issuing commands to the tpm during initialization, just reserve the chip after wait_startup, and release it when we are ready to call tpm_chip_register.
Cc: Christian Bundy christianbundy@fraction.io Cc: Dan Williams dan.j.williams@intel.com Cc: Peter Huewe peterhuewe@gmx.de Cc: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com Cc: Jason Gunthorpe jgg@ziepe.ca Cc: Stefan Berger stefanb@linux.vnet.ibm.com Cc: stable@vger.kernel.org Cc: linux-integrity@vger.kernel.org Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's") Signed-off-by: Jerry Snitselaar jsnitsel@redhat.com
I pushed to my master with minor tweaks and added my tags.
Please check before I put it to linux-next.
I don't see it yet here:
http://git.infradead.org/users/jjs/linux-tpmdd.git/shortlog/refs/heads/maste...
However, I wanted to make sure you captured that this does *not* fix the interrupt issue. I.e. make sure you remove the "Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's")" tag.
With that said, are you going to include the revert of:
1ea32c83c699 tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts
Dan, with the above reverted do you still get the screaming interrupt?
Yes, the screaming interrupt goes away, although it is replaced by these messages when the driver starts:
[ 3.725131] tpm_tis IFX0740:00: 2.0 TPM (device-id 0x1B, rev-id 16) [ 3.725358] tpm tpm0: tpm_try_transmit: send(): error -5 [ 3.725359] tpm tpm0: [Firmware Bug]: TPM interrupt not working, polling instead
If the choice is "error message + polled-mode" vs "pinning a cpu with interrupts" I'd accept the former, but wanted Jarkko with his maintainer hat to weigh in.
Is there a simple sanity check I can run to see if the TPM is still operational in this state?
What about T490S?
/Jarkko
Hi Jarkko, I'm waiting to hear back from the t490s user, but I imagine it still has the problem as well.
Christian, were you able to try this patch and verify it still resolves the issue you were having with the kernel failing to get the timeouts and durations from the tpm?
Thanks, Jerry
On Tue Dec 17 19, Jerry Snitselaar wrote:
On Tue Dec 17 19, Jarkko Sakkinen wrote:
On Mon, 2019-12-16 at 18:14 -0800, Dan Williams wrote:
On Mon, Dec 16, 2019 at 6:00 PM Jerry Snitselaar jsnitsel@redhat.com wrote:
On Mon Dec 16 19, Dan Williams wrote:
On Mon, Dec 16, 2019 at 4:59 PM Jarkko Sakkinen jarkko.sakkinen@linux.intel.com wrote:
On Wed, 2019-12-11 at 16:54 -0700, Jerry Snitselaar wrote: > Instead of repeatedly calling tpm_chip_start/tpm_chip_stop when > issuing commands to the tpm during initialization, just reserve the > chip after wait_startup, and release it when we are ready to call > tpm_chip_register. > > Cc: Christian Bundy christianbundy@fraction.io > Cc: Dan Williams dan.j.williams@intel.com > Cc: Peter Huewe peterhuewe@gmx.de > Cc: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com > Cc: Jason Gunthorpe jgg@ziepe.ca > Cc: Stefan Berger stefanb@linux.vnet.ibm.com > Cc: stable@vger.kernel.org > Cc: linux-integrity@vger.kernel.org > Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") > Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's") > Signed-off-by: Jerry Snitselaar jsnitsel@redhat.com
I pushed to my master with minor tweaks and added my tags.
Please check before I put it to linux-next.
I don't see it yet here:
http://git.infradead.org/users/jjs/linux-tpmdd.git/shortlog/refs/heads/maste...
However, I wanted to make sure you captured that this does *not* fix the interrupt issue. I.e. make sure you remove the "Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's")" tag.
With that said, are you going to include the revert of:
1ea32c83c699 tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts
Dan, with the above reverted do you still get the screaming interrupt?
Yes, the screaming interrupt goes away, although it is replaced by these messages when the driver starts:
[ 3.725131] tpm_tis IFX0740:00: 2.0 TPM (device-id 0x1B, rev-id 16) [ 3.725358] tpm tpm0: tpm_try_transmit: send(): error -5 [ 3.725359] tpm tpm0: [Firmware Bug]: TPM interrupt not working, polling instead
If the choice is "error message + polled-mode" vs "pinning a cpu with interrupts" I'd accept the former, but wanted Jarkko with his maintainer hat to weigh in.
Is there a simple sanity check I can run to see if the TPM is still operational in this state?
What about T490S?
/Jarkko
Hi Jarkko, I'm waiting to hear back from the t490s user, but I imagine it still has the problem as well.
It appears he is out of the office until January, so I doubt I will hear anything back until then.
Christian, were you able to try this patch and verify it still resolves the issue you were having with the kernel failing to get the timeouts and durations from the tpm?
Thanks, Jerry
On Tue, 2019-12-17 at 10:26 -0700, Jerry Snitselaar wrote:
It appears he is out of the office until January, so I doubt I will hear anything back until then.
Unless we have access to a platform to sanely validate a fix before that, we will have to wait until January then.
/Jarkko
On Tue, 2019-12-17 at 10:18 -0700, Jerry Snitselaar wrote:
On Tue Dec 17 19, Jarkko Sakkinen wrote:
On Mon, 2019-12-16 at 18:14 -0800, Dan Williams wrote:
On Mon, Dec 16, 2019 at 6:00 PM Jerry Snitselaar jsnitsel@redhat.com wrote:
On Mon Dec 16 19, Dan Williams wrote:
On Mon, Dec 16, 2019 at 4:59 PM Jarkko Sakkinen jarkko.sakkinen@linux.intel.com wrote:
On Wed, 2019-12-11 at 16:54 -0700, Jerry Snitselaar wrote: > Instead of repeatedly calling tpm_chip_start/tpm_chip_stop when > issuing commands to the tpm during initialization, just reserve the > chip after wait_startup, and release it when we are ready to call > tpm_chip_register. > > Cc: Christian Bundy christianbundy@fraction.io > Cc: Dan Williams dan.j.williams@intel.com > Cc: Peter Huewe peterhuewe@gmx.de > Cc: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com > Cc: Jason Gunthorpe jgg@ziepe.ca > Cc: Stefan Berger stefanb@linux.vnet.ibm.com > Cc: stable@vger.kernel.org > Cc: linux-integrity@vger.kernel.org > Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") > Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's") > Signed-off-by: Jerry Snitselaar jsnitsel@redhat.com
I pushed to my master with minor tweaks and added my tags.
Please check before I put it to linux-next.
I don't see it yet here:
http://git.infradead.org/users/jjs/linux-tpmdd.git/shortlog/refs/heads/maste...
However, I wanted to make sure you captured that this does *not* fix the interrupt issue. I.e. make sure you remove the "Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's")" tag.
With that said, are you going to include the revert of:
1ea32c83c699 tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts
Dan, with the above reverted do you still get the screaming interrupt?
Yes, the screaming interrupt goes away, although it is replaced by these messages when the driver starts:
[ 3.725131] tpm_tis IFX0740:00: 2.0 TPM (device-id 0x1B, rev-id 16) [ 3.725358] tpm tpm0: tpm_try_transmit: send(): error -5 [ 3.725359] tpm tpm0: [Firmware Bug]: TPM interrupt not working, polling instead
If the choice is "error message + polled-mode" vs "pinning a cpu with interrupts" I'd accept the former, but wanted Jarkko with his maintainer hat to weigh in.
Is there a simple sanity check I can run to see if the TPM is still operational in this state?
What about T490S?
/Jarkko
Hi Jarkko, I'm waiting to hear back from the t490s user, but I imagine it still has the problem as well.
Christian, were you able to try this patch and verify it still resolves the issue you were having with the kernel failing to get the timeouts and durations from the tpm?
Including those reverts would be a bogus change at this point.
The fix that I already applied obviously fixes an issue even if it does not fix all the issues.
/Jarkko
On Wed, Dec 18, 2019 at 3:07 PM Jarkko Sakkinen jarkko.sakkinen@linux.intel.com wrote:
On Tue, 2019-12-17 at 10:18 -0700, Jerry Snitselaar wrote:
On Tue Dec 17 19, Jarkko Sakkinen wrote:
On Mon, 2019-12-16 at 18:14 -0800, Dan Williams wrote:
On Mon, Dec 16, 2019 at 6:00 PM Jerry Snitselaar jsnitsel@redhat.com wrote:
On Mon Dec 16 19, Dan Williams wrote:
On Mon, Dec 16, 2019 at 4:59 PM Jarkko Sakkinen jarkko.sakkinen@linux.intel.com wrote: > On Wed, 2019-12-11 at 16:54 -0700, Jerry Snitselaar wrote: > > Instead of repeatedly calling tpm_chip_start/tpm_chip_stop when > > issuing commands to the tpm during initialization, just reserve the > > chip after wait_startup, and release it when we are ready to call > > tpm_chip_register. > > > > Cc: Christian Bundy christianbundy@fraction.io > > Cc: Dan Williams dan.j.williams@intel.com > > Cc: Peter Huewe peterhuewe@gmx.de > > Cc: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com > > Cc: Jason Gunthorpe jgg@ziepe.ca > > Cc: Stefan Berger stefanb@linux.vnet.ibm.com > > Cc: stable@vger.kernel.org > > Cc: linux-integrity@vger.kernel.org > > Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") > > Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's") > > Signed-off-by: Jerry Snitselaar jsnitsel@redhat.com > > I pushed to my master with minor tweaks and added my tags. > > Please check before I put it to linux-next.
I don't see it yet here:
http://git.infradead.org/users/jjs/linux-tpmdd.git/shortlog/refs/heads/maste...
However, I wanted to make sure you captured that this does *not* fix the interrupt issue. I.e. make sure you remove the "Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's")" tag.
With that said, are you going to include the revert of:
1ea32c83c699 tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts
Dan, with the above reverted do you still get the screaming interrupt?
Yes, the screaming interrupt goes away, although it is replaced by these messages when the driver starts:
[ 3.725131] tpm_tis IFX0740:00: 2.0 TPM (device-id 0x1B, rev-id 16) [ 3.725358] tpm tpm0: tpm_try_transmit: send(): error -5 [ 3.725359] tpm tpm0: [Firmware Bug]: TPM interrupt not working, polling instead
If the choice is "error message + polled-mode" vs "pinning a cpu with interrupts" I'd accept the former, but wanted Jarkko with his maintainer hat to weigh in.
Is there a simple sanity check I can run to see if the TPM is still operational in this state?
What about T490S?
/Jarkko
Hi Jarkko, I'm waiting to hear back from the t490s user, but I imagine it still has the problem as well.
Christian, were you able to try this patch and verify it still resolves the issue you were having with the kernel failing to get the timeouts and durations from the tpm?
Including those reverts would be a bogus change at this point.
I'm failing to see how you arrived at that conclusion.
The fix that I already applied obviously fixes an issue even if it does not fix all the issues.
These patches take a usable system and make it unusable:
1ea32c83c699 tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts 5b359c7c4372 tpm_tis_core: Turn on the TPM before probing IRQ's
...they need to be reverted, or the regression needs to be fixed, but asserting that you fixed something else unrelated does not help.
On Wed Dec 18 19, Dan Williams wrote:
On Wed, Dec 18, 2019 at 3:07 PM Jarkko Sakkinen jarkko.sakkinen@linux.intel.com wrote:
On Tue, 2019-12-17 at 10:18 -0700, Jerry Snitselaar wrote:
On Tue Dec 17 19, Jarkko Sakkinen wrote:
On Mon, 2019-12-16 at 18:14 -0800, Dan Williams wrote:
On Mon, Dec 16, 2019 at 6:00 PM Jerry Snitselaar jsnitsel@redhat.com wrote:
On Mon Dec 16 19, Dan Williams wrote: > On Mon, Dec 16, 2019 at 4:59 PM Jarkko Sakkinen > jarkko.sakkinen@linux.intel.com wrote: > > On Wed, 2019-12-11 at 16:54 -0700, Jerry Snitselaar wrote: > > > Instead of repeatedly calling tpm_chip_start/tpm_chip_stop when > > > issuing commands to the tpm during initialization, just reserve the > > > chip after wait_startup, and release it when we are ready to call > > > tpm_chip_register. > > > > > > Cc: Christian Bundy christianbundy@fraction.io > > > Cc: Dan Williams dan.j.williams@intel.com > > > Cc: Peter Huewe peterhuewe@gmx.de > > > Cc: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com > > > Cc: Jason Gunthorpe jgg@ziepe.ca > > > Cc: Stefan Berger stefanb@linux.vnet.ibm.com > > > Cc: stable@vger.kernel.org > > > Cc: linux-integrity@vger.kernel.org > > > Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") > > > Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's") > > > Signed-off-by: Jerry Snitselaar jsnitsel@redhat.com > > > > I pushed to my master with minor tweaks and added my tags. > > > > Please check before I put it to linux-next. > > I don't see it yet here: > > http://git.infradead.org/users/jjs/linux-tpmdd.git/shortlog/refs/heads/maste... > > However, I wanted to make sure you captured that this does *not* fix > the interrupt issue. I.e. make sure you remove the "Fixes: > 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's")" > tag. > > With that said, are you going to include the revert of: > > 1ea32c83c699 tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts
Dan, with the above reverted do you still get the screaming interrupt?
Yes, the screaming interrupt goes away, although it is replaced by these messages when the driver starts:
[ 3.725131] tpm_tis IFX0740:00: 2.0 TPM (device-id 0x1B, rev-id 16) [ 3.725358] tpm tpm0: tpm_try_transmit: send(): error -5 [ 3.725359] tpm tpm0: [Firmware Bug]: TPM interrupt not working, polling instead
If the choice is "error message + polled-mode" vs "pinning a cpu with interrupts" I'd accept the former, but wanted Jarkko with his maintainer hat to weigh in.
Is there a simple sanity check I can run to see if the TPM is still operational in this state?
What about T490S?
/Jarkko
Hi Jarkko, I'm waiting to hear back from the t490s user, but I imagine it still has the problem as well.
Christian, were you able to try this patch and verify it still resolves the issue you were having with the kernel failing to get the timeouts and durations from the tpm?
Including those reverts would be a bogus change at this point.
I'm failing to see how you arrived at that conclusion.
The fix that I already applied obviously fixes an issue even if it does not fix all the issues.
These patches take a usable system and make it unusable:
1ea32c83c699 tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts 5b359c7c4372 tpm_tis_core: Turn on the TPM before probing IRQ's
...they need to be reverted, or the regression needs to be fixed, but asserting that you fixed something else unrelated does not help.
Reverting 1ea32c83c699 ("tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts") would at least allow people impacted by this to boot their systems without disabling the tpm, or blacklisting the module while we figure this out. From what I can tell the tpm_tis code was operating in that state since 570a36097f30 ("tpm: drop 'irq' from struct tpm_vendor_specific") until Stefan's patch.
Regards, Jerry
On Thu, 2019-12-19 at 03:07 -0700, Jerry Snitselaar wrote:
These patches take a usable system and make it unusable:
1ea32c83c699 tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts 5b359c7c4372 tpm_tis_core: Turn on the TPM before probing IRQ's
...they need to be reverted, or the regression needs to be fixed, but asserting that you fixed something else unrelated does not help.
Reverting 1ea32c83c699 ("tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts") would at least allow people impacted by this to boot their systems without disabling the tpm, or blacklisting the module while we figure this out. From what I can tell the tpm_tis code was operating in that state since 570a36097f30 ("tpm: drop 'irq' from struct tpm_vendor_specific") until Stefan's patch.
I'll formalize a fix based on the reverts.
Sorry for the holiday latency.
/Jarkko
On Fri, 2019-12-27 at 07:09 +0200, Jarkko Sakkinen wrote:
On Thu, 2019-12-19 at 03:07 -0700, Jerry Snitselaar wrote:
These patches take a usable system and make it unusable:
1ea32c83c699 tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts 5b359c7c4372 tpm_tis_core: Turn on the TPM before probing IRQ's
...they need to be reverted, or the regression needs to be fixed, but asserting that you fixed something else unrelated does not help.
Reverting 1ea32c83c699 ("tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts") would at least allow people impacted by this to boot their systems without disabling the tpm, or blacklisting the module while we figure this out. From what I can tell the tpm_tis code was operating in that state since 570a36097f30 ("tpm: drop 'irq' from struct tpm_vendor_specific") until Stefan's patch.
I'll formalize a fix based on the reverts.
Sorry for the holiday latency.
OK, have a branch now for the PR:
for-linus-v5.5-rc4
Note: now contains the first revert but I'll add another patch if required.
/Jarkko
On Fri, 2019-12-27 at 07:42 +0200, Jarkko Sakkinen wrote:
On Fri, 2019-12-27 at 07:09 +0200, Jarkko Sakkinen wrote:
On Thu, 2019-12-19 at 03:07 -0700, Jerry Snitselaar wrote:
These patches take a usable system and make it unusable:
1ea32c83c699 tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts 5b359c7c4372 tpm_tis_core: Turn on the TPM before probing IRQ's
...they need to be reverted, or the regression needs to be fixed, but asserting that you fixed something else unrelated does not help.
Reverting 1ea32c83c699 ("tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts") would at least allow people impacted by this to boot their systems without disabling the tpm, or blacklisting the module while we figure this out. From what I can tell the tpm_tis code was operating in that state since 570a36097f30 ("tpm: drop 'irq' from struct tpm_vendor_specific") until Stefan's patch.
I'll formalize a fix based on the reverts.
Sorry for the holiday latency.
OK, have a branch now for the PR:
for-linus-v5.5-rc4
Note: now contains the first revert but I'll add another patch if required.
Jerry, can you check this and send me revert to your earlier fix *if* required but first test with just this fix applied.
Thanks.
/Jarkko
On Tue Dec 17 19, Jarkko Sakkinen wrote:
On Mon, 2019-12-16 at 18:14 -0800, Dan Williams wrote:
On Mon, Dec 16, 2019 at 6:00 PM Jerry Snitselaar jsnitsel@redhat.com wrote:
On Mon Dec 16 19, Dan Williams wrote:
On Mon, Dec 16, 2019 at 4:59 PM Jarkko Sakkinen jarkko.sakkinen@linux.intel.com wrote:
On Wed, 2019-12-11 at 16:54 -0700, Jerry Snitselaar wrote:
Instead of repeatedly calling tpm_chip_start/tpm_chip_stop when issuing commands to the tpm during initialization, just reserve the chip after wait_startup, and release it when we are ready to call tpm_chip_register.
Cc: Christian Bundy christianbundy@fraction.io Cc: Dan Williams dan.j.williams@intel.com Cc: Peter Huewe peterhuewe@gmx.de Cc: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com Cc: Jason Gunthorpe jgg@ziepe.ca Cc: Stefan Berger stefanb@linux.vnet.ibm.com Cc: stable@vger.kernel.org Cc: linux-integrity@vger.kernel.org Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's") Signed-off-by: Jerry Snitselaar jsnitsel@redhat.com
I pushed to my master with minor tweaks and added my tags.
Please check before I put it to linux-next.
I don't see it yet here:
http://git.infradead.org/users/jjs/linux-tpmdd.git/shortlog/refs/heads/maste...
However, I wanted to make sure you captured that this does *not* fix the interrupt issue. I.e. make sure you remove the "Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's")" tag.
With that said, are you going to include the revert of:
1ea32c83c699 tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts
Dan, with the above reverted do you still get the screaming interrupt?
Yes, the screaming interrupt goes away, although it is replaced by these messages when the driver starts:
[ 3.725131] tpm_tis IFX0740:00: 2.0 TPM (device-id 0x1B, rev-id 16) [ 3.725358] tpm tpm0: tpm_try_transmit: send(): error -5 [ 3.725359] tpm tpm0: [Firmware Bug]: TPM interrupt not working, polling instead
If the choice is "error message + polled-mode" vs "pinning a cpu with interrupts" I'd accept the former, but wanted Jarkko with his maintainer hat to weigh in.
Is there a simple sanity check I can run to see if the TPM is still operational in this state?
What about T490S?
/Jarkko
I just heard back from the t490s user, and as expected the problem still exists there with this patch.
Regards, Jerry
On Tue, 2019-12-17 at 13:29 -0700, Jerry Snitselaar wrote:
I just heard back from the t490s user, and as expected the problem still exists there with this patch.
OK. Now we have to reason what still is behaving incorrectly and create a proper fix. Is he available to test a subsequent fix?
Since the holidays are coming it might anyway take early Jan before we can test anything but we can still try to find the root cause by inspection.
/Jarkko
On Tue, 2019-12-17 at 02:58 +0200, Jarkko Sakkinen wrote:
On Wed, 2019-12-11 at 16:54 -0700, Jerry Snitselaar wrote:
Instead of repeatedly calling tpm_chip_start/tpm_chip_stop when issuing commands to the tpm during initialization, just reserve the chip after wait_startup, and release it when we are ready to call tpm_chip_register.
Cc: Christian Bundy christianbundy@fraction.io Cc: Dan Williams dan.j.williams@intel.com Cc: Peter Huewe peterhuewe@gmx.de Cc: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com Cc: Jason Gunthorpe jgg@ziepe.ca Cc: Stefan Berger stefanb@linux.vnet.ibm.com Cc: stable@vger.kernel.org Cc: linux-integrity@vger.kernel.org Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's") Signed-off-by: Jerry Snitselaar jsnitsel@redhat.com
I pushed to my master with minor tweaks and added my tags.
Please check before I put it to linux-next.
Oops. Forgot to push please check now
git://git.infradead.org/users/jjs/linux-tpmdd.git master
/Jarkko
On Wed, 2019-12-11 at 16:17 -0700, Jerry Snitselaar wrote:
Instead of repeatedly calling tpm_chip_start/tpm_chip_stop when issuing commands to the tpm during initialization, just reserve the chip after wait_startup, and release it when we are ready to call tpm_chip_register.
Cc: Christian Bundy christianbundy@fraction.io Cc: Dan Williams dan.j.williams@intel.com Cc: Peter Huewe peterhuewe@gmx.de Cc: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com Cc: Jason Gunthorpe jgg@ziepe.ca Cc: Stefan Berger stefanb@linux.vnet.ibm.com Cc: stable@vger.kernel.org Cc: linux-intergrity@vger.kernel.org Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") Signed-off-by: Jerry Snitselaar jsnitsel@redhat.com
Sorry for the latency.
For me this looks good for putting to my rc3 PR with a minor twist:
1. Rename out_err as err_probe. 2. Rename out_start as err_start.
/Jarkko
linux-stable-mirror@lists.linaro.org
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Dan Williams -
Jarkko Sakkinen -
Jerry Snitselaar