This is a note to let you know that I've just added the patch titled
gpio: altera: Use handle_level_irq when configured as a level_high
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum…
The filename of the patch is:
gpio-altera-use-handle_level_irq-when-configured-as-a-level_high.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable(a)vger.kernel.org> know about it.
>From foo@baz Tue Dec 12 13:38:50 CET 2017
From: Phil Reid <preid(a)electromag.com.au>
Date: Mon, 20 Feb 2017 09:41:45 +0800
Subject: gpio: altera: Use handle_level_irq when configured as a level_high
From: Phil Reid <preid(a)electromag.com.au>
[ Upstream commit f759921cfbf4847319d197a6ed7c9534d593f8bc ]
When a threaded irq handler is chained attached to one of the gpio
pins when configure for level irq the altera_gpio_irq_leveL_high_handler
does not mask the interrupt while being handled by the chained irq.
This resulting in the threaded irq not getting enough cycles to complete
quickly enough before the irq was disabled as faulty. handle_level_irq
should be used in this situation instead of handle_simple_irq.
In gpiochip_irqchip_add set default handler to handle_bad_irq as
per Documentation/gpio/driver.txt. Then set the correct handler in
the set_type callback.
Signed-off-by: Phil Reid <preid(a)electromag.com.au>
Signed-off-by: Linus Walleij <linus.walleij(a)linaro.org>
Signed-off-by: Sasha Levin <alexander.levin(a)verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
---
drivers/gpio/gpio-altera.c | 26 +++++++++++---------------
1 file changed, 11 insertions(+), 15 deletions(-)
--- a/drivers/gpio/gpio-altera.c
+++ b/drivers/gpio/gpio-altera.c
@@ -94,21 +94,18 @@ static int altera_gpio_irq_set_type(stru
altera_gc = to_altera(irq_data_get_irq_chip_data(d));
- if (type == IRQ_TYPE_NONE)
+ if (type == IRQ_TYPE_NONE) {
+ irq_set_handler_locked(d, handle_bad_irq);
return 0;
- if (type == IRQ_TYPE_LEVEL_HIGH &&
- altera_gc->interrupt_trigger == IRQ_TYPE_LEVEL_HIGH)
- return 0;
- if (type == IRQ_TYPE_EDGE_RISING &&
- altera_gc->interrupt_trigger == IRQ_TYPE_EDGE_RISING)
- return 0;
- if (type == IRQ_TYPE_EDGE_FALLING &&
- altera_gc->interrupt_trigger == IRQ_TYPE_EDGE_FALLING)
- return 0;
- if (type == IRQ_TYPE_EDGE_BOTH &&
- altera_gc->interrupt_trigger == IRQ_TYPE_EDGE_BOTH)
+ }
+ if (type == altera_gc->interrupt_trigger) {
+ if (type == IRQ_TYPE_LEVEL_HIGH)
+ irq_set_handler_locked(d, handle_level_irq);
+ else
+ irq_set_handler_locked(d, handle_simple_irq);
return 0;
-
+ }
+ irq_set_handler_locked(d, handle_bad_irq);
return -EINVAL;
}
@@ -234,7 +231,6 @@ static void altera_gpio_irq_edge_handler
chained_irq_exit(chip, desc);
}
-
static void altera_gpio_irq_leveL_high_handler(struct irq_desc *desc)
{
struct altera_gpio_chip *altera_gc;
@@ -314,7 +310,7 @@ static int altera_gpio_probe(struct plat
altera_gc->interrupt_trigger = reg;
ret = gpiochip_irqchip_add(&altera_gc->mmchip.gc, &altera_irq_chip, 0,
- handle_simple_irq, IRQ_TYPE_NONE);
+ handle_bad_irq, IRQ_TYPE_NONE);
if (ret) {
dev_info(&pdev->dev, "could not add irqchip\n");
Patches currently in stable-queue which might be from preid(a)electromag.com.au are
queue-4.4/gpio-altera-use-handle_level_irq-when-configured-as-a-level_high.patch
This is a note to let you know that I've just added the patch titled
dynamic-debug-howto: fix optional/omitted ending line number to be LARGE instead of 0
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum…
The filename of the patch is:
dynamic-debug-howto-fix-optional-omitted-ending-line-number-to-be-large-instead-of-0.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable(a)vger.kernel.org> know about it.
>From foo@baz Tue Dec 12 13:38:50 CET 2017
From: Randy Dunlap <rdunlap(a)infradead.org>
Date: Fri, 17 Nov 2017 15:27:35 -0800
Subject: dynamic-debug-howto: fix optional/omitted ending line number to be LARGE instead of 0
From: Randy Dunlap <rdunlap(a)infradead.org>
[ Upstream commit 1f3c790bd5989fcfec9e53ad8fa09f5b740c958f ]
line-range is supposed to treat "1-" as "1-endoffile", so
handle the special case by setting last_lineno to UINT_MAX.
Fixes this error:
dynamic_debug:ddebug_parse_query: last-line:0 < 1st-line:1
dynamic_debug:ddebug_exec_query: query parse failed
Link: http://lkml.kernel.org/r/10a6a101-e2be-209f-1f41-54637824788e@infradead.org
Signed-off-by: Randy Dunlap <rdunlap(a)infradead.org>
Acked-by: Jason Baron <jbaron(a)akamai.com>
Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org>
Signed-off-by: Sasha Levin <alexander.levin(a)verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
---
lib/dynamic_debug.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -353,6 +353,10 @@ static int ddebug_parse_query(char *word
if (parse_lineno(last, &query->last_lineno) < 0)
return -EINVAL;
+ /* special case for last lineno not specified */
+ if (query->last_lineno == 0)
+ query->last_lineno = UINT_MAX;
+
if (query->last_lineno < query->first_lineno) {
pr_err("last-line:%d < 1st-line:%d\n",
query->last_lineno,
Patches currently in stable-queue which might be from rdunlap(a)infradead.org are
queue-4.4/dynamic-debug-howto-fix-optional-omitted-ending-line-number-to-be-large-instead-of-0.patch
This is a note to let you know that I've just added the patch titled
bnx2x: prevent crash when accessing PTP with interface down
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum…
The filename of the patch is:
bnx2x-prevent-crash-when-accessing-ptp-with-interface-down.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable(a)vger.kernel.org> know about it.
>From foo@baz Tue Dec 12 13:38:50 CET 2017
From: Michal Schmidt <mschmidt(a)redhat.com>
Date: Fri, 3 Mar 2017 17:08:28 +0100
Subject: bnx2x: prevent crash when accessing PTP with interface down
From: Michal Schmidt <mschmidt(a)redhat.com>
[ Upstream commit 466e8bf10ac104d96e1ea813e8126e11cb72ea20 ]
It is possible to crash the kernel by accessing a PTP device while its
associated bnx2x interface is down. Before the interface is brought up,
the timecounter is not initialized, so accessing it results in NULL
dereference.
Fix it by checking if the interface is up.
Use -ENETDOWN as the error code when the interface is down.
-EFAULT in bnx2x_ptp_adjfreq() did not seem right.
Tested using phc_ctl get/set/adj/freq commands.
Signed-off-by: Michal Schmidt <mschmidt(a)redhat.com>
Signed-off-by: David S. Miller <davem(a)davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin(a)verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
---
drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 20 +++++++++++++++++++-
1 file changed, 19 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
@@ -13646,7 +13646,7 @@ static int bnx2x_ptp_adjfreq(struct ptp_
if (!netif_running(bp->dev)) {
DP(BNX2X_MSG_PTP,
"PTP adjfreq called while the interface is down\n");
- return -EFAULT;
+ return -ENETDOWN;
}
if (ppb < 0) {
@@ -13705,6 +13705,12 @@ static int bnx2x_ptp_adjtime(struct ptp_
{
struct bnx2x *bp = container_of(ptp, struct bnx2x, ptp_clock_info);
+ if (!netif_running(bp->dev)) {
+ DP(BNX2X_MSG_PTP,
+ "PTP adjtime called while the interface is down\n");
+ return -ENETDOWN;
+ }
+
DP(BNX2X_MSG_PTP, "PTP adjtime called, delta = %llx\n", delta);
timecounter_adjtime(&bp->timecounter, delta);
@@ -13717,6 +13723,12 @@ static int bnx2x_ptp_gettime(struct ptp_
struct bnx2x *bp = container_of(ptp, struct bnx2x, ptp_clock_info);
u64 ns;
+ if (!netif_running(bp->dev)) {
+ DP(BNX2X_MSG_PTP,
+ "PTP gettime called while the interface is down\n");
+ return -ENETDOWN;
+ }
+
ns = timecounter_read(&bp->timecounter);
DP(BNX2X_MSG_PTP, "PTP gettime called, ns = %llu\n", ns);
@@ -13732,6 +13744,12 @@ static int bnx2x_ptp_settime(struct ptp_
struct bnx2x *bp = container_of(ptp, struct bnx2x, ptp_clock_info);
u64 ns;
+ if (!netif_running(bp->dev)) {
+ DP(BNX2X_MSG_PTP,
+ "PTP settime called while the interface is down\n");
+ return -ENETDOWN;
+ }
+
ns = timespec64_to_ns(ts);
DP(BNX2X_MSG_PTP, "PTP settime called, ns = %llu\n", ns);
Patches currently in stable-queue which might be from mschmidt(a)redhat.com are
queue-4.4/bnx2x-fix-possible-overrun-of-vfpf-multicast-addresses-array.patch
queue-4.4/bnx2x-do-not-rollback-vf-mac-vlan-filters-we-did-not-configure.patch
queue-4.4/bnx2x-prevent-crash-when-accessing-ptp-with-interface-down.patch
This is a note to let you know that I've just added the patch titled
crypto: s5p-sss - Fix completing crypto request in IRQ handler
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum…
The filename of the patch is:
crypto-s5p-sss-fix-completing-crypto-request-in-irq-handler.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable(a)vger.kernel.org> know about it.
>From foo@baz Tue Dec 12 13:38:50 CET 2017
From: Krzysztof Kozlowski <krzk(a)kernel.org>
Date: Sun, 5 Mar 2017 19:14:07 +0200
Subject: crypto: s5p-sss - Fix completing crypto request in IRQ handler
From: Krzysztof Kozlowski <krzk(a)kernel.org>
[ Upstream commit 07de4bc88ce6a4d898cad9aa4c99c1df7e87702d ]
In a regular interrupt handler driver was finishing the crypt/decrypt
request by calling complete on crypto request. This is disallowed since
converting to skcipher in commit b286d8b1a690 ("crypto: skcipher - Add
skcipher walk interface") and causes a warning:
WARNING: CPU: 0 PID: 0 at crypto/skcipher.c:430 skcipher_walk_first+0x13c/0x14c
The interrupt is marked shared but in fact there are no other users
sharing it. Thus the simplest solution seems to be to just use a
threaded interrupt handler, after converting it to oneshot.
Signed-off-by: Krzysztof Kozlowski <krzk(a)kernel.org>
Signed-off-by: Herbert Xu <herbert(a)gondor.apana.org.au>
Signed-off-by: Sasha Levin <alexander.levin(a)verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
---
drivers/crypto/s5p-sss.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/drivers/crypto/s5p-sss.c
+++ b/drivers/crypto/s5p-sss.c
@@ -664,8 +664,9 @@ static int s5p_aes_probe(struct platform
dev_warn(dev, "feed control interrupt is not available.\n");
goto err_irq;
}
- err = devm_request_irq(dev, pdata->irq_fc, s5p_aes_interrupt,
- IRQF_SHARED, pdev->name, pdev);
+ err = devm_request_threaded_irq(dev, pdata->irq_fc, NULL,
+ s5p_aes_interrupt, IRQF_ONESHOT,
+ pdev->name, pdev);
if (err < 0) {
dev_warn(dev, "feed control interrupt is not available.\n");
goto err_irq;
Patches currently in stable-queue which might be from krzk(a)kernel.org are
queue-4.4/crypto-s5p-sss-fix-completing-crypto-request-in-irq-handler.patch
This is a note to let you know that I've just added the patch titled
drm/amd/amdgpu: fix console deadlock if late init failed
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum…
The filename of the patch is:
drm-amd-amdgpu-fix-console-deadlock-if-late-init-failed.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable(a)vger.kernel.org> know about it.
>From foo@baz Tue Dec 12 13:38:50 CET 2017
From: Jim Qu <Jim.Qu(a)amd.com>
Date: Wed, 1 Mar 2017 15:53:29 +0800
Subject: drm/amd/amdgpu: fix console deadlock if late init failed
From: Jim Qu <Jim.Qu(a)amd.com>
[ Upstream commit c085bd5119d5d0bdf3ef591a5563566be7dedced ]
Signed-off-by: Jim Qu <Jim.Qu(a)amd.com>
Reviewed-by: Alex Deucher <alexander.deucher(a)amd.com>
Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com>
Signed-off-by: Sasha Levin <alexander.levin(a)verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1760,8 +1760,11 @@ int amdgpu_resume_kms(struct drm_device
}
r = amdgpu_late_init(adev);
- if (r)
+ if (r) {
+ if (fbcon)
+ console_unlock();
return r;
+ }
/* pin cursors */
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
Patches currently in stable-queue which might be from Jim.Qu(a)amd.com are
queue-4.4/drm-amd-amdgpu-fix-console-deadlock-if-late-init-failed.patch
This is a note to let you know that I've just added the patch titled
bnx2x: do not rollback VF MAC/VLAN filters we did not configure
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum…
The filename of the patch is:
bnx2x-do-not-rollback-vf-mac-vlan-filters-we-did-not-configure.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable(a)vger.kernel.org> know about it.
>From foo@baz Tue Dec 12 13:38:50 CET 2017
From: Michal Schmidt <mschmidt(a)redhat.com>
Date: Fri, 3 Mar 2017 17:08:32 +0100
Subject: bnx2x: do not rollback VF MAC/VLAN filters we did not configure
From: Michal Schmidt <mschmidt(a)redhat.com>
[ Upstream commit 78d5505432436516456c12abbe705ec8dee7ee2b ]
On failure to configure a VF MAC/VLAN filter we should not attempt to
rollback filters that we failed to configure with -EEXIST.
Signed-off-by: Michal Schmidt <mschmidt(a)redhat.com>
Signed-off-by: David S. Miller <davem(a)davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin(a)verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
---
drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c | 8 +++++++-
drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h | 1 +
2 files changed, 8 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c
@@ -434,7 +434,9 @@ static int bnx2x_vf_mac_vlan_config(stru
/* Add/Remove the filter */
rc = bnx2x_config_vlan_mac(bp, &ramrod);
- if (rc && rc != -EEXIST) {
+ if (rc == -EEXIST)
+ return 0;
+ if (rc) {
BNX2X_ERR("Failed to %s %s\n",
filter->add ? "add" : "delete",
(filter->type == BNX2X_VF_FILTER_VLAN_MAC) ?
@@ -444,6 +446,8 @@ static int bnx2x_vf_mac_vlan_config(stru
return rc;
}
+ filter->applied = true;
+
return 0;
}
@@ -471,6 +475,8 @@ int bnx2x_vf_mac_vlan_config_list(struct
BNX2X_ERR("Managed only %d/%d filters - rolling back\n",
i, filters->count + 1);
while (--i >= 0) {
+ if (!filters->filters[i].applied)
+ continue;
filters->filters[i].add = !filters->filters[i].add;
bnx2x_vf_mac_vlan_config(bp, vf, qid,
&filters->filters[i],
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h
@@ -114,6 +114,7 @@ struct bnx2x_vf_mac_vlan_filter {
(BNX2X_VF_FILTER_MAC | BNX2X_VF_FILTER_VLAN) /*shortcut*/
bool add;
+ bool applied;
u8 *mac;
u16 vid;
};
Patches currently in stable-queue which might be from mschmidt(a)redhat.com are
queue-4.4/bnx2x-fix-possible-overrun-of-vfpf-multicast-addresses-array.patch
queue-4.4/bnx2x-do-not-rollback-vf-mac-vlan-filters-we-did-not-configure.patch
queue-4.4/bnx2x-prevent-crash-when-accessing-ptp-with-interface-down.patch
This is a note to let you know that I've just added the patch titled
bnx2x: fix possible overrun of VFPF multicast addresses array
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum…
The filename of the patch is:
bnx2x-fix-possible-overrun-of-vfpf-multicast-addresses-array.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable(a)vger.kernel.org> know about it.
>From foo@baz Tue Dec 12 13:38:50 CET 2017
From: Michal Schmidt <mschmidt(a)redhat.com>
Date: Fri, 3 Mar 2017 17:08:30 +0100
Subject: bnx2x: fix possible overrun of VFPF multicast addresses array
From: Michal Schmidt <mschmidt(a)redhat.com>
[ Upstream commit 22118d861cec5da6ed525aaf12a3de9bfeffc58f ]
It is too late to check for the limit of the number of VF multicast
addresses after they have already been copied to the req->multicast[]
array, possibly overflowing it.
Do the check before copying.
Also fix the error path to not skip unlocking vf2pf_mutex.
Signed-off-by: Michal Schmidt <mschmidt(a)redhat.com>
Signed-off-by: David S. Miller <davem(a)davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin(a)verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
---
drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c | 23 +++++++++++------------
1 file changed, 11 insertions(+), 12 deletions(-)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c
@@ -868,7 +868,7 @@ int bnx2x_vfpf_set_mcast(struct net_devi
struct bnx2x *bp = netdev_priv(dev);
struct vfpf_set_q_filters_tlv *req = &bp->vf2pf_mbox->req.set_q_filters;
struct pfvf_general_resp_tlv *resp = &bp->vf2pf_mbox->resp.general_resp;
- int rc, i = 0;
+ int rc = 0, i = 0;
struct netdev_hw_addr *ha;
if (bp->state != BNX2X_STATE_OPEN) {
@@ -883,6 +883,15 @@ int bnx2x_vfpf_set_mcast(struct net_devi
/* Get Rx mode requested */
DP(NETIF_MSG_IFUP, "dev->flags = %x\n", dev->flags);
+ /* We support PFVF_MAX_MULTICAST_PER_VF mcast addresses tops */
+ if (netdev_mc_count(dev) > PFVF_MAX_MULTICAST_PER_VF) {
+ DP(NETIF_MSG_IFUP,
+ "VF supports not more than %d multicast MAC addresses\n",
+ PFVF_MAX_MULTICAST_PER_VF);
+ rc = -EINVAL;
+ goto out;
+ }
+
netdev_for_each_mc_addr(ha, dev) {
DP(NETIF_MSG_IFUP, "Adding mcast MAC: %pM\n",
bnx2x_mc_addr(ha));
@@ -890,16 +899,6 @@ int bnx2x_vfpf_set_mcast(struct net_devi
i++;
}
- /* We support four PFVF_MAX_MULTICAST_PER_VF mcast
- * addresses tops
- */
- if (i >= PFVF_MAX_MULTICAST_PER_VF) {
- DP(NETIF_MSG_IFUP,
- "VF supports not more than %d multicast MAC addresses\n",
- PFVF_MAX_MULTICAST_PER_VF);
- return -EINVAL;
- }
-
req->n_multicast = i;
req->flags |= VFPF_SET_Q_FILTERS_MULTICAST_CHANGED;
req->vf_qid = 0;
@@ -924,7 +923,7 @@ int bnx2x_vfpf_set_mcast(struct net_devi
out:
bnx2x_vfpf_finalize(bp, &req->first_tlv);
- return 0;
+ return rc;
}
/* request pf to add a vlan for the vf */
Patches currently in stable-queue which might be from mschmidt(a)redhat.com are
queue-4.4/bnx2x-fix-possible-overrun-of-vfpf-multicast-addresses-array.patch
queue-4.4/bnx2x-do-not-rollback-vf-mac-vlan-filters-we-did-not-configure.patch
queue-4.4/bnx2x-prevent-crash-when-accessing-ptp-with-interface-down.patch
This is a note to let you know that I've just added the patch titled
axonram: Fix gendisk handling
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum…
The filename of the patch is:
axonram-fix-gendisk-handling.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable(a)vger.kernel.org> know about it.
>From foo@baz Tue Dec 12 13:38:50 CET 2017
From: Jan Kara <jack(a)suse.cz>
Date: Wed, 8 Mar 2017 14:56:05 +0100
Subject: axonram: Fix gendisk handling
From: Jan Kara <jack(a)suse.cz>
[ Upstream commit 672a2c87c83649fb0167202342ce85af9a3b4f1c ]
It is invalid to call del_gendisk() when disk->queue is NULL. Fix error
handling in axon_ram_probe() to avoid doing that.
Also del_gendisk() does not drop a reference to gendisk allocated by
alloc_disk(). That has to be done by put_disk(). Add that call where
needed.
Reported-by: Dan Carpenter <dan.carpenter(a)oracle.com>
Signed-off-by: Jan Kara <jack(a)suse.cz>
Signed-off-by: Jens Axboe <axboe(a)fb.com>
Signed-off-by: Sasha Levin <alexander.levin(a)verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
---
arch/powerpc/sysdev/axonram.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/arch/powerpc/sysdev/axonram.c
+++ b/arch/powerpc/sysdev/axonram.c
@@ -276,7 +276,9 @@ failed:
if (bank->disk->major > 0)
unregister_blkdev(bank->disk->major,
bank->disk->disk_name);
- del_gendisk(bank->disk);
+ if (bank->disk->flags & GENHD_FL_UP)
+ del_gendisk(bank->disk);
+ put_disk(bank->disk);
}
device->dev.platform_data = NULL;
if (bank->io_addr != 0)
@@ -301,6 +303,7 @@ axon_ram_remove(struct platform_device *
device_remove_file(&device->dev, &dev_attr_ecc);
free_irq(bank->irq_id, device);
del_gendisk(bank->disk);
+ put_disk(bank->disk);
iounmap((void __iomem *) bank->io_addr);
kfree(bank);
Patches currently in stable-queue which might be from jack(a)suse.cz are
queue-4.4/axonram-fix-gendisk-handling.patch