March 2024 - Linux-stable-mirror

FAILED: patch "[PATCH] serial: 8250_dw: Do not reclock if already at correct rate" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y git checkout FETCH_HEAD git cherry-pick -x e5d6bd25f93d6ae158bb4cd04956cb497a85b8ef # <… [View More]resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024032716-jaywalker-strainer-d5dc@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: e5d6bd25f93d ("serial: 8250_dw: Do not reclock if already at correct rate") 74365bc138ab ("serial: 8250_dw: drop bogus uartclk optimisation") 0eb9da9cf201 ("serial: 8250_dw: Fix the trivial typo in the comment") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From e5d6bd25f93d6ae158bb4cd04956cb497a85b8ef Mon Sep 17 00:00:00 2001 From: Peter Collingbourne <pcc(a)google.com> Date: Thu, 22 Feb 2024 11:26:34 -0800 Subject: [PATCH] serial: 8250_dw: Do not reclock if already at correct rate When userspace opens the console, we call set_termios() passing a termios with the console's configured baud rate. Currently this causes dw8250_set_termios() to disable and then re-enable the UART clock at the same frequency as it was originally. This can cause corruption of any concurrent console output. Fix it by skipping the reclocking if we are already at the correct rate. Signed-off-by: Peter Collingbourne <pcc(a)google.com> Fixes: 4e26b134bd17 ("serial: 8250_dw: clock rate handling for all ACPI platforms") Cc: stable(a)vger.kernel.org Reviewed-by: Andy Shevchenko <andriy.shevchenko(a)linux.intel.com> Link: https://lore.kernel.org/r/20240222192635.1050502-1-pcc@google.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c index 2d1f350a4bea..c1d43f040c43 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -357,9 +357,9 @@ static void dw8250_set_termios(struct uart_port *p, struct ktermios *termios, long rate; int ret; - clk_disable_unprepare(d->clk); rate = clk_round_rate(d->clk, newrate); - if (rate > 0) { + if (rate > 0 && p->uartclk != rate) { + clk_disable_unprepare(d->clk); /* * Note that any clock-notifer worker will block in * serial8250_update_uartclk() until we are done. @@ -367,8 +367,8 @@ static void dw8250_set_termios(struct uart_port *p, struct ktermios *termios, ret = clk_set_rate(d->clk, newrate); if (!ret) p->uartclk = rate; + clk_prepare_enable(d->clk); } - clk_prepare_enable(d->clk); dw8250_do_set_termios(p, termios, old); } [View Less]

1 year, 1 month

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FAILED: patch "[PATCH] serial: 8250_dw: Do not reclock if already at correct rate" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x e5d6bd25f93d6ae158bb4cd04956cb497a85b8ef # <… [View More]resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024032710-unbent-dingy-2b33@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: e5d6bd25f93d ("serial: 8250_dw: Do not reclock if already at correct rate") 74365bc138ab ("serial: 8250_dw: drop bogus uartclk optimisation") 0eb9da9cf201 ("serial: 8250_dw: Fix the trivial typo in the comment") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From e5d6bd25f93d6ae158bb4cd04956cb497a85b8ef Mon Sep 17 00:00:00 2001 From: Peter Collingbourne <pcc(a)google.com> Date: Thu, 22 Feb 2024 11:26:34 -0800 Subject: [PATCH] serial: 8250_dw: Do not reclock if already at correct rate When userspace opens the console, we call set_termios() passing a termios with the console's configured baud rate. Currently this causes dw8250_set_termios() to disable and then re-enable the UART clock at the same frequency as it was originally. This can cause corruption of any concurrent console output. Fix it by skipping the reclocking if we are already at the correct rate. Signed-off-by: Peter Collingbourne <pcc(a)google.com> Fixes: 4e26b134bd17 ("serial: 8250_dw: clock rate handling for all ACPI platforms") Cc: stable(a)vger.kernel.org Reviewed-by: Andy Shevchenko <andriy.shevchenko(a)linux.intel.com> Link: https://lore.kernel.org/r/20240222192635.1050502-1-pcc@google.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c index 2d1f350a4bea..c1d43f040c43 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -357,9 +357,9 @@ static void dw8250_set_termios(struct uart_port *p, struct ktermios *termios, long rate; int ret; - clk_disable_unprepare(d->clk); rate = clk_round_rate(d->clk, newrate); - if (rate > 0) { + if (rate > 0 && p->uartclk != rate) { + clk_disable_unprepare(d->clk); /* * Note that any clock-notifer worker will block in * serial8250_update_uartclk() until we are done. @@ -367,8 +367,8 @@ static void dw8250_set_termios(struct uart_port *p, struct ktermios *termios, ret = clk_set_rate(d->clk, newrate); if (!ret) p->uartclk = rate; + clk_prepare_enable(d->clk); } - clk_prepare_enable(d->clk); dw8250_do_set_termios(p, termios, old); } [View Less]

1 year, 1 month

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FAILED: patch "[PATCH] usb: typec: ucsi: fix UCSI on SM8550 & SM8650 Qualcomm" failed to apply to 6.6-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y git checkout FETCH_HEAD git cherry-pick -x 4a30dcac38c2b34f5b4f358630774bc2c2c104b0 # <… [View More]resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024032707-among-rerun-a107@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^.. Possible dependencies: 4a30dcac38c2 ("usb: typec: ucsi: fix UCSI on SM8550 & SM8650 Qualcomm devices") 1d103d6af241 ("usb: typec: ucsi: fix UCSI on buggy Qualcomm devices") c6165ed2f425 ("usb: ucsi: glink: use the connector orientation GPIO to provide switch events") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 4a30dcac38c2b34f5b4f358630774bc2c2c104b0 Mon Sep 17 00:00:00 2001 From: Neil Armstrong <neil.armstrong(a)linaro.org> Date: Fri, 23 Feb 2024 10:40:40 +0100 Subject: [PATCH] usb: typec: ucsi: fix UCSI on SM8550 & SM8650 Qualcomm devices On SM8550 and SM8650 Qualcomm platforms a call to UCSI_GET_PDOS for non-PD partners will cause a firmware crash with no easy way to recover from it. Add UCSI_NO_PARTNER_PDOS quirk for those platform until we find a way to properly handle the crash. Signed-off-by: Neil Armstrong <neil.armstrong(a)linaro.org> Reviewed-by: Heikki Krogerus <heikki.krogerus(a)linux.intel.com> Link: https://lore.kernel.org/r/20240223-topic-sm8550-upstream-ucsi-no-pdos-v1-1-… Cc: stable <stable(a)kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/usb/typec/ucsi/ucsi_glink.c b/drivers/usb/typec/ucsi/ucsi_glink.c index 53a7ede8556d..faccc942b381 100644 --- a/drivers/usb/typec/ucsi/ucsi_glink.c +++ b/drivers/usb/typec/ucsi/ucsi_glink.c @@ -301,6 +301,7 @@ static const struct of_device_id pmic_glink_ucsi_of_quirks[] = { { .compatible = "qcom,sc8180x-pmic-glink", .data = (void *)UCSI_NO_PARTNER_PDOS, }, { .compatible = "qcom,sc8280xp-pmic-glink", .data = (void *)UCSI_NO_PARTNER_PDOS, }, { .compatible = "qcom,sm8350-pmic-glink", .data = (void *)UCSI_NO_PARTNER_PDOS, }, + { .compatible = "qcom,sm8550-pmic-glink", .data = (void *)UCSI_NO_PARTNER_PDOS, }, {} }; [View Less]

1 year, 1 month

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FAILED: patch "[PATCH] usb: typec: ucsi: fix UCSI on SM8550 & SM8650 Qualcomm" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.1-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y git checkout FETCH_HEAD git cherry-pick -x 4a30dcac38c2b34f5b4f358630774bc2c2c104b0 # <… [View More]resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024032708-replay-kilobyte-d938@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: 4a30dcac38c2 ("usb: typec: ucsi: fix UCSI on SM8550 & SM8650 Qualcomm devices") 1d103d6af241 ("usb: typec: ucsi: fix UCSI on buggy Qualcomm devices") c6165ed2f425 ("usb: ucsi: glink: use the connector orientation GPIO to provide switch events") 62b5412b1f4a ("usb: typec: ucsi: add PMIC Glink UCSI driver") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 4a30dcac38c2b34f5b4f358630774bc2c2c104b0 Mon Sep 17 00:00:00 2001 From: Neil Armstrong <neil.armstrong(a)linaro.org> Date: Fri, 23 Feb 2024 10:40:40 +0100 Subject: [PATCH] usb: typec: ucsi: fix UCSI on SM8550 & SM8650 Qualcomm devices On SM8550 and SM8650 Qualcomm platforms a call to UCSI_GET_PDOS for non-PD partners will cause a firmware crash with no easy way to recover from it. Add UCSI_NO_PARTNER_PDOS quirk for those platform until we find a way to properly handle the crash. Signed-off-by: Neil Armstrong <neil.armstrong(a)linaro.org> Reviewed-by: Heikki Krogerus <heikki.krogerus(a)linux.intel.com> Link: https://lore.kernel.org/r/20240223-topic-sm8550-upstream-ucsi-no-pdos-v1-1-… Cc: stable <stable(a)kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/usb/typec/ucsi/ucsi_glink.c b/drivers/usb/typec/ucsi/ucsi_glink.c index 53a7ede8556d..faccc942b381 100644 --- a/drivers/usb/typec/ucsi/ucsi_glink.c +++ b/drivers/usb/typec/ucsi/ucsi_glink.c @@ -301,6 +301,7 @@ static const struct of_device_id pmic_glink_ucsi_of_quirks[] = { { .compatible = "qcom,sc8180x-pmic-glink", .data = (void *)UCSI_NO_PARTNER_PDOS, }, { .compatible = "qcom,sc8280xp-pmic-glink", .data = (void *)UCSI_NO_PARTNER_PDOS, }, { .compatible = "qcom,sm8350-pmic-glink", .data = (void *)UCSI_NO_PARTNER_PDOS, }, + { .compatible = "qcom,sm8550-pmic-glink", .data = (void *)UCSI_NO_PARTNER_PDOS, }, {} }; [View Less]

1 year, 1 month

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FAILED: patch "[PATCH] usb: typec: ucsi: fix UCSI on SM8550 & SM8650 Qualcomm" failed to apply to 6.7-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.7-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.7.y git checkout FETCH_HEAD git cherry-pick -x 4a30dcac38c2b34f5b4f358630774bc2c2c104b0 # <… [View More]

1 year, 1 month

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FAILED: patch "[PATCH] usb: typec: altmodes/displayport: create sysfs nodes as" failed to apply to 4.19-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-4.19.y git checkout FETCH_HEAD git cherry-pick -x 165376f6b23e9a779850e750fb2eb06622e5a531 # <… [View More]resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024032707-fang-recede-3104@gregkh' --subject-prefix 'PATCH 4.19.y' HEAD^.. Possible dependencies: 165376f6b23e ("usb: typec: altmodes/displayport: create sysfs nodes as driver's default device attribute group") 001b0c780eac ("usb: typec: altmodes/displayport: Add hpd sysfs attribute") 7f8113948785 ("usb: typec: altmodes/displayport: Notify drm subsys of hotplug events") 318ebed29718 ("usb: typec: altmodes: displayport: Supply missing displayport.h include file") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 165376f6b23e9a779850e750fb2eb06622e5a531 Mon Sep 17 00:00:00 2001 From: RD Babiera <rdbabiera(a)google.com> Date: Thu, 29 Feb 2024 00:11:02 +0000 Subject: [PATCH] usb: typec: altmodes/displayport: create sysfs nodes as driver's default device attribute group The DisplayPort driver's sysfs nodes may be present to the userspace before typec_altmode_set_drvdata() completes in dp_altmode_probe. This means that a sysfs read can trigger a NULL pointer error by deferencing dp->hpd in hpd_show or dp->lock in pin_assignment_show, as dev_get_drvdata() returns NULL in those cases. Remove manual sysfs node creation in favor of adding attribute group as default for devices bound to the driver. The ATTRIBUTE_GROUPS() macro is not used here otherwise the path to the sysfs nodes is no longer compliant with the ABI. Fixes: 0e3bb7d6894d ("usb: typec: Add driver for DisplayPort alternate mode") Cc: stable(a)vger.kernel.org Signed-off-by: RD Babiera <rdbabiera(a)google.com> Link: https://lore.kernel.org/r/20240229001101.3889432-2-rdbabiera@google.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/usb/typec/altmodes/displayport.c b/drivers/usb/typec/altmodes/displayport.c index f81bec0c7b86..f8ea3054be54 100644 --- a/drivers/usb/typec/altmodes/displayport.c +++ b/drivers/usb/typec/altmodes/displayport.c @@ -559,16 +559,21 @@ static ssize_t hpd_show(struct device *dev, struct device_attribute *attr, char } static DEVICE_ATTR_RO(hpd); -static struct attribute *dp_altmode_attrs[] = { +static struct attribute *displayport_attrs[] = { &dev_attr_configuration.attr, &dev_attr_pin_assignment.attr, &dev_attr_hpd.attr, NULL }; -static const struct attribute_group dp_altmode_group = { +static const struct attribute_group displayport_group = { .name = "displayport", - .attrs = dp_altmode_attrs, + .attrs = displayport_attrs, +}; + +static const struct attribute_group *displayport_groups[] = { + &displayport_group, + NULL, }; int dp_altmode_probe(struct typec_altmode *alt) @@ -576,7 +581,6 @@ int dp_altmode_probe(struct typec_altmode *alt) const struct typec_altmode *port = typec_altmode_get_partner(alt); struct fwnode_handle *fwnode; struct dp_altmode *dp; - int ret; /* FIXME: Port can only be DFP_U. */ @@ -587,10 +591,6 @@ int dp_altmode_probe(struct typec_altmode *alt) DP_CAP_PIN_ASSIGN_DFP_D(alt->vdo))) return -ENODEV; - ret = sysfs_create_group(&alt->dev.kobj, &dp_altmode_group); - if (ret) - return ret; - dp = devm_kzalloc(&alt->dev, sizeof(*dp), GFP_KERNEL); if (!dp) return -ENOMEM; @@ -624,7 +624,6 @@ void dp_altmode_remove(struct typec_altmode *alt) { struct dp_altmode *dp = typec_altmode_get_drvdata(alt); - sysfs_remove_group(&alt->dev.kobj, &dp_altmode_group); cancel_work_sync(&dp->work); if (dp->connector_fwnode) { @@ -649,6 +648,7 @@ static struct typec_altmode_driver dp_altmode_driver = { .driver = { .name = "typec_displayport", .owner = THIS_MODULE, + .dev_groups = displayport_groups, }, }; module_typec_altmode_driver(dp_altmode_driver); [View Less]

1 year, 1 month

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FAILED: patch "[PATCH] usb: typec: altmodes/displayport: create sysfs nodes as" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y git checkout FETCH_HEAD git cherry-pick -x 165376f6b23e9a779850e750fb2eb06622e5a531 # <… [View More]resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024032706-coagulant-coroner-a5e2@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: 165376f6b23e ("usb: typec: altmodes/displayport: create sysfs nodes as driver's default device attribute group") 001b0c780eac ("usb: typec: altmodes/displayport: Add hpd sysfs attribute") 7f8113948785 ("usb: typec: altmodes/displayport: Notify drm subsys of hotplug events") 318ebed29718 ("usb: typec: altmodes: displayport: Supply missing displayport.h include file") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 165376f6b23e9a779850e750fb2eb06622e5a531 Mon Sep 17 00:00:00 2001 From: RD Babiera <rdbabiera(a)google.com> Date: Thu, 29 Feb 2024 00:11:02 +0000 Subject: [PATCH] usb: typec: altmodes/displayport: create sysfs nodes as driver's default device attribute group The DisplayPort driver's sysfs nodes may be present to the userspace before typec_altmode_set_drvdata() completes in dp_altmode_probe. This means that a sysfs read can trigger a NULL pointer error by deferencing dp->hpd in hpd_show or dp->lock in pin_assignment_show, as dev_get_drvdata() returns NULL in those cases. Remove manual sysfs node creation in favor of adding attribute group as default for devices bound to the driver. The ATTRIBUTE_GROUPS() macro is not used here otherwise the path to the sysfs nodes is no longer compliant with the ABI. Fixes: 0e3bb7d6894d ("usb: typec: Add driver for DisplayPort alternate mode") Cc: stable(a)vger.kernel.org Signed-off-by: RD Babiera <rdbabiera(a)google.com> Link: https://lore.kernel.org/r/20240229001101.3889432-2-rdbabiera@google.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/usb/typec/altmodes/displayport.c b/drivers/usb/typec/altmodes/displayport.c index f81bec0c7b86..f8ea3054be54 100644 --- a/drivers/usb/typec/altmodes/displayport.c +++ b/drivers/usb/typec/altmodes/displayport.c @@ -559,16 +559,21 @@ static ssize_t hpd_show(struct device *dev, struct device_attribute *attr, char } static DEVICE_ATTR_RO(hpd); -static struct attribute *dp_altmode_attrs[] = { +static struct attribute *displayport_attrs[] = { &dev_attr_configuration.attr, &dev_attr_pin_assignment.attr, &dev_attr_hpd.attr, NULL }; -static const struct attribute_group dp_altmode_group = { +static const struct attribute_group displayport_group = { .name = "displayport", - .attrs = dp_altmode_attrs, + .attrs = displayport_attrs, +}; + +static const struct attribute_group *displayport_groups[] = { + &displayport_group, + NULL, }; int dp_altmode_probe(struct typec_altmode *alt) @@ -576,7 +581,6 @@ int dp_altmode_probe(struct typec_altmode *alt) const struct typec_altmode *port = typec_altmode_get_partner(alt); struct fwnode_handle *fwnode; struct dp_altmode *dp; - int ret; /* FIXME: Port can only be DFP_U. */ @@ -587,10 +591,6 @@ int dp_altmode_probe(struct typec_altmode *alt) DP_CAP_PIN_ASSIGN_DFP_D(alt->vdo))) return -ENODEV; - ret = sysfs_create_group(&alt->dev.kobj, &dp_altmode_group); - if (ret) - return ret; - dp = devm_kzalloc(&alt->dev, sizeof(*dp), GFP_KERNEL); if (!dp) return -ENOMEM; @@ -624,7 +624,6 @@ void dp_altmode_remove(struct typec_altmode *alt) { struct dp_altmode *dp = typec_altmode_get_drvdata(alt); - sysfs_remove_group(&alt->dev.kobj, &dp_altmode_group); cancel_work_sync(&dp->work); if (dp->connector_fwnode) { @@ -649,6 +648,7 @@ static struct typec_altmode_driver dp_altmode_driver = { .driver = { .name = "typec_displayport", .owner = THIS_MODULE, + .dev_groups = displayport_groups, }, }; module_typec_altmode_driver(dp_altmode_driver); [View Less]

1 year, 1 month

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FAILED: patch "[PATCH] usb: typec: altmodes/displayport: create sysfs nodes as" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y git checkout FETCH_HEAD git cherry-pick -x 165376f6b23e9a779850e750fb2eb06622e5a531 # <… [View More]resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024032700-hardship-clubhouse-8ed7@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: 165376f6b23e ("usb: typec: altmodes/displayport: create sysfs nodes as driver's default device attribute group") 001b0c780eac ("usb: typec: altmodes/displayport: Add hpd sysfs attribute") 7f8113948785 ("usb: typec: altmodes/displayport: Notify drm subsys of hotplug events") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 165376f6b23e9a779850e750fb2eb06622e5a531 Mon Sep 17 00:00:00 2001 From: RD Babiera <rdbabiera(a)google.com> Date: Thu, 29 Feb 2024 00:11:02 +0000 Subject: [PATCH] usb: typec: altmodes/displayport: create sysfs nodes as driver's default device attribute group The DisplayPort driver's sysfs nodes may be present to the userspace before typec_altmode_set_drvdata() completes in dp_altmode_probe. This means that a sysfs read can trigger a NULL pointer error by deferencing dp->hpd in hpd_show or dp->lock in pin_assignment_show, as dev_get_drvdata() returns NULL in those cases. Remove manual sysfs node creation in favor of adding attribute group as default for devices bound to the driver. The ATTRIBUTE_GROUPS() macro is not used here otherwise the path to the sysfs nodes is no longer compliant with the ABI. Fixes: 0e3bb7d6894d ("usb: typec: Add driver for DisplayPort alternate mode") Cc: stable(a)vger.kernel.org Signed-off-by: RD Babiera <rdbabiera(a)google.com> Link: https://lore.kernel.org/r/20240229001101.3889432-2-rdbabiera@google.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/usb/typec/altmodes/displayport.c b/drivers/usb/typec/altmodes/displayport.c index f81bec0c7b86..f8ea3054be54 100644 --- a/drivers/usb/typec/altmodes/displayport.c +++ b/drivers/usb/typec/altmodes/displayport.c @@ -559,16 +559,21 @@ static ssize_t hpd_show(struct device *dev, struct device_attribute *attr, char } static DEVICE_ATTR_RO(hpd); -static struct attribute *dp_altmode_attrs[] = { +static struct attribute *displayport_attrs[] = { &dev_attr_configuration.attr, &dev_attr_pin_assignment.attr, &dev_attr_hpd.attr, NULL }; -static const struct attribute_group dp_altmode_group = { +static const struct attribute_group displayport_group = { .name = "displayport", - .attrs = dp_altmode_attrs, + .attrs = displayport_attrs, +}; + +static const struct attribute_group *displayport_groups[] = { + &displayport_group, + NULL, }; int dp_altmode_probe(struct typec_altmode *alt) @@ -576,7 +581,6 @@ int dp_altmode_probe(struct typec_altmode *alt) const struct typec_altmode *port = typec_altmode_get_partner(alt); struct fwnode_handle *fwnode; struct dp_altmode *dp; - int ret; /* FIXME: Port can only be DFP_U. */ @@ -587,10 +591,6 @@ int dp_altmode_probe(struct typec_altmode *alt) DP_CAP_PIN_ASSIGN_DFP_D(alt->vdo))) return -ENODEV; - ret = sysfs_create_group(&alt->dev.kobj, &dp_altmode_group); - if (ret) - return ret; - dp = devm_kzalloc(&alt->dev, sizeof(*dp), GFP_KERNEL); if (!dp) return -ENOMEM; @@ -624,7 +624,6 @@ void dp_altmode_remove(struct typec_altmode *alt) { struct dp_altmode *dp = typec_altmode_get_drvdata(alt); - sysfs_remove_group(&alt->dev.kobj, &dp_altmode_group); cancel_work_sync(&dp->work); if (dp->connector_fwnode) { @@ -649,6 +648,7 @@ static struct typec_altmode_driver dp_altmode_driver = { .driver = { .name = "typec_displayport", .owner = THIS_MODULE, + .dev_groups = displayport_groups, }, }; module_typec_altmode_driver(dp_altmode_driver); [View Less]

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FAILED: patch "[PATCH] usb: typec: altmodes/displayport: create sysfs nodes as" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x 165376f6b23e9a779850e750fb2eb06622e5a531 # <… [View More]resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024032759-written-hypnotize-0b2f@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: 165376f6b23e ("usb: typec: altmodes/displayport: create sysfs nodes as driver's default device attribute group") 001b0c780eac ("usb: typec: altmodes/displayport: Add hpd sysfs attribute") 7f8113948785 ("usb: typec: altmodes/displayport: Notify drm subsys of hotplug events") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 165376f6b23e9a779850e750fb2eb06622e5a531 Mon Sep 17 00:00:00 2001 From: RD Babiera <rdbabiera(a)google.com> Date: Thu, 29 Feb 2024 00:11:02 +0000 Subject: [PATCH] usb: typec: altmodes/displayport: create sysfs nodes as driver's default device attribute group The DisplayPort driver's sysfs nodes may be present to the userspace before typec_altmode_set_drvdata() completes in dp_altmode_probe. This means that a sysfs read can trigger a NULL pointer error by deferencing dp->hpd in hpd_show or dp->lock in pin_assignment_show, as dev_get_drvdata() returns NULL in those cases. Remove manual sysfs node creation in favor of adding attribute group as default for devices bound to the driver. The ATTRIBUTE_GROUPS() macro is not used here otherwise the path to the sysfs nodes is no longer compliant with the ABI. Fixes: 0e3bb7d6894d ("usb: typec: Add driver for DisplayPort alternate mode") Cc: stable(a)vger.kernel.org Signed-off-by: RD Babiera <rdbabiera(a)google.com> Link: https://lore.kernel.org/r/20240229001101.3889432-2-rdbabiera@google.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/usb/typec/altmodes/displayport.c b/drivers/usb/typec/altmodes/displayport.c index f81bec0c7b86..f8ea3054be54 100644 --- a/drivers/usb/typec/altmodes/displayport.c +++ b/drivers/usb/typec/altmodes/displayport.c @@ -559,16 +559,21 @@ static ssize_t hpd_show(struct device *dev, struct device_attribute *attr, char } static DEVICE_ATTR_RO(hpd); -static struct attribute *dp_altmode_attrs[] = { +static struct attribute *displayport_attrs[] = { &dev_attr_configuration.attr, &dev_attr_pin_assignment.attr, &dev_attr_hpd.attr, NULL }; -static const struct attribute_group dp_altmode_group = { +static const struct attribute_group displayport_group = { .name = "displayport", - .attrs = dp_altmode_attrs, + .attrs = displayport_attrs, +}; + +static const struct attribute_group *displayport_groups[] = { + &displayport_group, + NULL, }; int dp_altmode_probe(struct typec_altmode *alt) @@ -576,7 +581,6 @@ int dp_altmode_probe(struct typec_altmode *alt) const struct typec_altmode *port = typec_altmode_get_partner(alt); struct fwnode_handle *fwnode; struct dp_altmode *dp; - int ret; /* FIXME: Port can only be DFP_U. */ @@ -587,10 +591,6 @@ int dp_altmode_probe(struct typec_altmode *alt) DP_CAP_PIN_ASSIGN_DFP_D(alt->vdo))) return -ENODEV; - ret = sysfs_create_group(&alt->dev.kobj, &dp_altmode_group); - if (ret) - return ret; - dp = devm_kzalloc(&alt->dev, sizeof(*dp), GFP_KERNEL); if (!dp) return -ENOMEM; @@ -624,7 +624,6 @@ void dp_altmode_remove(struct typec_altmode *alt) { struct dp_altmode *dp = typec_altmode_get_drvdata(alt); - sysfs_remove_group(&alt->dev.kobj, &dp_altmode_group); cancel_work_sync(&dp->work); if (dp->connector_fwnode) { @@ -649,6 +648,7 @@ static struct typec_altmode_driver dp_altmode_driver = { .driver = { .name = "typec_displayport", .owner = THIS_MODULE, + .dev_groups = displayport_groups, }, }; module_typec_altmode_driver(dp_altmode_driver); [View Less]

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FAILED: patch "[PATCH] usb: typec: altmodes/displayport: create sysfs nodes as" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.1-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y git checkout FETCH_HEAD git cherry-pick -x 165376f6b23e9a779850e750fb2eb06622e5a531 # <… [View More]resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024032758-thesaurus-rabid-563c@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: 165376f6b23e ("usb: typec: altmodes/displayport: create sysfs nodes as driver's default device attribute group") 001b0c780eac ("usb: typec: altmodes/displayport: Add hpd sysfs attribute") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 165376f6b23e9a779850e750fb2eb06622e5a531 Mon Sep 17 00:00:00 2001 From: RD Babiera <rdbabiera(a)google.com> Date: Thu, 29 Feb 2024 00:11:02 +0000 Subject: [PATCH] usb: typec: altmodes/displayport: create sysfs nodes as driver's default device attribute group The DisplayPort driver's sysfs nodes may be present to the userspace before typec_altmode_set_drvdata() completes in dp_altmode_probe. This means that a sysfs read can trigger a NULL pointer error by deferencing dp->hpd in hpd_show or dp->lock in pin_assignment_show, as dev_get_drvdata() returns NULL in those cases. Remove manual sysfs node creation in favor of adding attribute group as default for devices bound to the driver. The ATTRIBUTE_GROUPS() macro is not used here otherwise the path to the sysfs nodes is no longer compliant with the ABI. Fixes: 0e3bb7d6894d ("usb: typec: Add driver for DisplayPort alternate mode") Cc: stable(a)vger.kernel.org Signed-off-by: RD Babiera <rdbabiera(a)google.com> Link: https://lore.kernel.org/r/20240229001101.3889432-2-rdbabiera@google.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/usb/typec/altmodes/displayport.c b/drivers/usb/typec/altmodes/displayport.c index f81bec0c7b86..f8ea3054be54 100644 --- a/drivers/usb/typec/altmodes/displayport.c +++ b/drivers/usb/typec/altmodes/displayport.c @@ -559,16 +559,21 @@ static ssize_t hpd_show(struct device *dev, struct device_attribute *attr, char } static DEVICE_ATTR_RO(hpd); -static struct attribute *dp_altmode_attrs[] = { +static struct attribute *displayport_attrs[] = { &dev_attr_configuration.attr, &dev_attr_pin_assignment.attr, &dev_attr_hpd.attr, NULL }; -static const struct attribute_group dp_altmode_group = { +static const struct attribute_group displayport_group = { .name = "displayport", - .attrs = dp_altmode_attrs, + .attrs = displayport_attrs, +}; + +static const struct attribute_group *displayport_groups[] = { + &displayport_group, + NULL, }; int dp_altmode_probe(struct typec_altmode *alt) @@ -576,7 +581,6 @@ int dp_altmode_probe(struct typec_altmode *alt) const struct typec_altmode *port = typec_altmode_get_partner(alt); struct fwnode_handle *fwnode; struct dp_altmode *dp; - int ret; /* FIXME: Port can only be DFP_U. */ @@ -587,10 +591,6 @@ int dp_altmode_probe(struct typec_altmode *alt) DP_CAP_PIN_ASSIGN_DFP_D(alt->vdo))) return -ENODEV; - ret = sysfs_create_group(&alt->dev.kobj, &dp_altmode_group); - if (ret) - return ret; - dp = devm_kzalloc(&alt->dev, sizeof(*dp), GFP_KERNEL); if (!dp) return -ENOMEM; @@ -624,7 +624,6 @@ void dp_altmode_remove(struct typec_altmode *alt) { struct dp_altmode *dp = typec_altmode_get_drvdata(alt); - sysfs_remove_group(&alt->dev.kobj, &dp_altmode_group); cancel_work_sync(&dp->work); if (dp->connector_fwnode) { @@ -649,6 +648,7 @@ static struct typec_altmode_driver dp_altmode_driver = { .driver = { .name = "typec_displayport", .owner = THIS_MODULE, + .dev_groups = displayport_groups, }, }; module_typec_altmode_driver(dp_altmode_driver); [View Less]

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