* [PATCH] Input: cyapa - add missing input core locking to suspend/resume functions [not found] <CGME20231009121026eucas1p19ed2a6a88fa6b899ef9b915a73ad87b5@eucas1p1.samsung.com> @ 2023-10-09 12:10 ` Marek Szyprowski 2024-04-25 10:02 ` Marek Szyprowski 0 siblings, 1 reply; 3+ messages in thread From: Marek Szyprowski @ 2023-10-09 12:10 UTC (permalink / raw) To: linux-input, linux-kernel Cc: Marek Szyprowski, Dmitry Torokhov, Andrzej Pietrasiewicz Grab input->mutex during suspend/resume functions like it is done in other input drivers. This fixes the following warning during system suspend/resume cycle on Samsung Exynos5250-based Snow Chromebook: ------------[ cut here ]------------ WARNING: CPU: 1 PID: 1680 at drivers/input/input.c:2291 input_device_enabled+0x68/0x6c Modules linked in: ... CPU: 1 PID: 1680 Comm: kworker/u4:12 Tainted: G W 6.6.0-rc5-next-20231009 #14109 Hardware name: Samsung Exynos (Flattened Device Tree) Workqueue: events_unbound async_run_entry_fn unwind_backtrace from show_stack+0x10/0x14 show_stack from dump_stack_lvl+0x58/0x70 dump_stack_lvl from __warn+0x1a8/0x1cc __warn from warn_slowpath_fmt+0x18c/0x1b4 warn_slowpath_fmt from input_device_enabled+0x68/0x6c input_device_enabled from cyapa_gen3_set_power_mode+0x13c/0x1dc cyapa_gen3_set_power_mode from cyapa_reinitialize+0x10c/0x15c cyapa_reinitialize from cyapa_resume+0x48/0x98 cyapa_resume from dpm_run_callback+0x90/0x298 dpm_run_callback from device_resume+0xb4/0x258 device_resume from async_resume+0x20/0x64 async_resume from async_run_entry_fn+0x40/0x15c async_run_entry_fn from process_scheduled_works+0xbc/0x6a8 process_scheduled_works from worker_thread+0x188/0x454 worker_thread from kthread+0x108/0x140 kthread from ret_from_fork+0x14/0x28 Exception stack(0xf1625fb0 to 0xf1625ff8) ... ---[ end trace 0000000000000000 ]--- ... ------------[ cut here ]------------ WARNING: CPU: 1 PID: 1680 at drivers/input/input.c:2291 input_device_enabled+0x68/0x6c Modules linked in: ... CPU: 1 PID: 1680 Comm: kworker/u4:12 Tainted: G W 6.6.0-rc5-next-20231009 #14109 Hardware name: Samsung Exynos (Flattened Device Tree) Workqueue: events_unbound async_run_entry_fn unwind_backtrace from show_stack+0x10/0x14 show_stack from dump_stack_lvl+0x58/0x70 dump_stack_lvl from __warn+0x1a8/0x1cc __warn from warn_slowpath_fmt+0x18c/0x1b4 warn_slowpath_fmt from input_device_enabled+0x68/0x6c input_device_enabled from cyapa_gen3_set_power_mode+0x13c/0x1dc cyapa_gen3_set_power_mode from cyapa_reinitialize+0x10c/0x15c cyapa_reinitialize from cyapa_resume+0x48/0x98 cyapa_resume from dpm_run_callback+0x90/0x298 dpm_run_callback from device_resume+0xb4/0x258 device_resume from async_resume+0x20/0x64 async_resume from async_run_entry_fn+0x40/0x15c async_run_entry_fn from process_scheduled_works+0xbc/0x6a8 process_scheduled_works from worker_thread+0x188/0x454 worker_thread from kthread+0x108/0x140 kthread from ret_from_fork+0x14/0x28 Exception stack(0xf1625fb0 to 0xf1625ff8) ... ---[ end trace 0000000000000000 ]--- Fixes: d69f0a43c677 ("Input: use input_device_enabled()") Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> --- drivers/input/mouse/cyapa.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/input/mouse/cyapa.c b/drivers/input/mouse/cyapa.c index a84098448f5b..cf23f95b5f11 100644 --- a/drivers/input/mouse/cyapa.c +++ b/drivers/input/mouse/cyapa.c @@ -1347,10 +1347,16 @@ static int cyapa_suspend(struct device *dev) u8 power_mode; int error; - error = mutex_lock_interruptible(&cyapa->state_sync_lock); + error = mutex_lock_interruptible(&cyapa->input->mutex); if (error) return error; + error = mutex_lock_interruptible(&cyapa->state_sync_lock); + if (error) { + mutex_unlock(&cyapa->input->mutex); + return error; + } + /* * Runtime PM is enable only when device is in operational mode and * users in use, so need check it before disable it to @@ -1385,6 +1391,8 @@ static int cyapa_suspend(struct device *dev) cyapa->irq_wake = (enable_irq_wake(client->irq) == 0); mutex_unlock(&cyapa->state_sync_lock); + mutex_unlock(&cyapa->input->mutex); + return 0; } @@ -1394,6 +1402,7 @@ static int cyapa_resume(struct device *dev) struct cyapa *cyapa = i2c_get_clientdata(client); int error; + mutex_lock(&cyapa->input->mutex); mutex_lock(&cyapa->state_sync_lock); if (device_may_wakeup(dev) && cyapa->irq_wake) { @@ -1412,6 +1421,7 @@ static int cyapa_resume(struct device *dev) enable_irq(client->irq); mutex_unlock(&cyapa->state_sync_lock); + mutex_unlock(&cyapa->input->mutex); return 0; } -- 2.34.1 ^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] Input: cyapa - add missing input core locking to suspend/resume functions 2023-10-09 12:10 ` [PATCH] Input: cyapa - add missing input core locking to suspend/resume functions Marek Szyprowski @ 2024-04-25 10:02 ` Marek Szyprowski 2024-04-25 17:04 ` Andrzej Pietrasiewicz 0 siblings, 1 reply; 3+ messages in thread From: Marek Szyprowski @ 2024-04-25 10:02 UTC (permalink / raw) To: linux-input, linux-kernel; +Cc: Dmitry Torokhov, Andrzej Pietrasiewicz On 09.10.2023 14:10, Marek Szyprowski wrote: > Grab input->mutex during suspend/resume functions like it is done in > other input drivers. This fixes the following warning during system > suspend/resume cycle on Samsung Exynos5250-based Snow Chromebook: > > ------------[ cut here ]------------ > WARNING: CPU: 1 PID: 1680 at drivers/input/input.c:2291 input_device_enabled+0x68/0x6c > Modules linked in: ... > CPU: 1 PID: 1680 Comm: kworker/u4:12 Tainted: G W 6.6.0-rc5-next-20231009 #14109 > Hardware name: Samsung Exynos (Flattened Device Tree) > Workqueue: events_unbound async_run_entry_fn > unwind_backtrace from show_stack+0x10/0x14 > show_stack from dump_stack_lvl+0x58/0x70 > dump_stack_lvl from __warn+0x1a8/0x1cc > __warn from warn_slowpath_fmt+0x18c/0x1b4 > warn_slowpath_fmt from input_device_enabled+0x68/0x6c > input_device_enabled from cyapa_gen3_set_power_mode+0x13c/0x1dc > cyapa_gen3_set_power_mode from cyapa_reinitialize+0x10c/0x15c > cyapa_reinitialize from cyapa_resume+0x48/0x98 > cyapa_resume from dpm_run_callback+0x90/0x298 > dpm_run_callback from device_resume+0xb4/0x258 > device_resume from async_resume+0x20/0x64 > async_resume from async_run_entry_fn+0x40/0x15c > async_run_entry_fn from process_scheduled_works+0xbc/0x6a8 > process_scheduled_works from worker_thread+0x188/0x454 > worker_thread from kthread+0x108/0x140 > kthread from ret_from_fork+0x14/0x28 > Exception stack(0xf1625fb0 to 0xf1625ff8) > ... > ---[ end trace 0000000000000000 ]--- > ... > ------------[ cut here ]------------ > WARNING: CPU: 1 PID: 1680 at drivers/input/input.c:2291 input_device_enabled+0x68/0x6c > Modules linked in: ... > CPU: 1 PID: 1680 Comm: kworker/u4:12 Tainted: G W 6.6.0-rc5-next-20231009 #14109 > Hardware name: Samsung Exynos (Flattened Device Tree) > Workqueue: events_unbound async_run_entry_fn > unwind_backtrace from show_stack+0x10/0x14 > show_stack from dump_stack_lvl+0x58/0x70 > dump_stack_lvl from __warn+0x1a8/0x1cc > __warn from warn_slowpath_fmt+0x18c/0x1b4 > warn_slowpath_fmt from input_device_enabled+0x68/0x6c > input_device_enabled from cyapa_gen3_set_power_mode+0x13c/0x1dc > cyapa_gen3_set_power_mode from cyapa_reinitialize+0x10c/0x15c > cyapa_reinitialize from cyapa_resume+0x48/0x98 > cyapa_resume from dpm_run_callback+0x90/0x298 > dpm_run_callback from device_resume+0xb4/0x258 > device_resume from async_resume+0x20/0x64 > async_resume from async_run_entry_fn+0x40/0x15c > async_run_entry_fn from process_scheduled_works+0xbc/0x6a8 > process_scheduled_works from worker_thread+0x188/0x454 > worker_thread from kthread+0x108/0x140 > kthread from ret_from_fork+0x14/0x28 > Exception stack(0xf1625fb0 to 0xf1625ff8) > ... > ---[ end trace 0000000000000000 ]--- > > Fixes: d69f0a43c677 ("Input: use input_device_enabled()") > Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Gentle ping? > --- > drivers/input/mouse/cyapa.c | 12 +++++++++++- > 1 file changed, 11 insertions(+), 1 deletion(-) > > diff --git a/drivers/input/mouse/cyapa.c b/drivers/input/mouse/cyapa.c > index a84098448f5b..cf23f95b5f11 100644 > --- a/drivers/input/mouse/cyapa.c > +++ b/drivers/input/mouse/cyapa.c > @@ -1347,10 +1347,16 @@ static int cyapa_suspend(struct device *dev) > u8 power_mode; > int error; > > - error = mutex_lock_interruptible(&cyapa->state_sync_lock); > + error = mutex_lock_interruptible(&cyapa->input->mutex); > if (error) > return error; > > + error = mutex_lock_interruptible(&cyapa->state_sync_lock); > + if (error) { > + mutex_unlock(&cyapa->input->mutex); > + return error; > + } > + > /* > * Runtime PM is enable only when device is in operational mode and > * users in use, so need check it before disable it to > @@ -1385,6 +1391,8 @@ static int cyapa_suspend(struct device *dev) > cyapa->irq_wake = (enable_irq_wake(client->irq) == 0); > > mutex_unlock(&cyapa->state_sync_lock); > + mutex_unlock(&cyapa->input->mutex); > + > return 0; > } > > @@ -1394,6 +1402,7 @@ static int cyapa_resume(struct device *dev) > struct cyapa *cyapa = i2c_get_clientdata(client); > int error; > > + mutex_lock(&cyapa->input->mutex); > mutex_lock(&cyapa->state_sync_lock); > > if (device_may_wakeup(dev) && cyapa->irq_wake) { > @@ -1412,6 +1421,7 @@ static int cyapa_resume(struct device *dev) > enable_irq(client->irq); > > mutex_unlock(&cyapa->state_sync_lock); > + mutex_unlock(&cyapa->input->mutex); > return 0; > } > Best regards -- Marek Szyprowski, PhD Samsung R&D Institute Poland ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] Input: cyapa - add missing input core locking to suspend/resume functions 2024-04-25 10:02 ` Marek Szyprowski @ 2024-04-25 17:04 ` Andrzej Pietrasiewicz 0 siblings, 0 replies; 3+ messages in thread From: Andrzej Pietrasiewicz @ 2024-04-25 17:04 UTC (permalink / raw) To: Marek Szyprowski, linux-input, linux-kernel; +Cc: Dmitry Torokhov Hi Marek, W dniu 25.04.2024 o 12:02, Marek Szyprowski pisze: > On 09.10.2023 14:10, Marek Szyprowski wrote: >> Grab input->mutex during suspend/resume functions like it is done in >> other input drivers. This fixes the following warning during system >> suspend/resume cycle on Samsung Exynos5250-based Snow Chromebook: >> >> ------------[ cut here ]------------ >> WARNING: CPU: 1 PID: 1680 at drivers/input/input.c:2291 input_device_enabled+0x68/0x6c >> Modules linked in: ... >> CPU: 1 PID: 1680 Comm: kworker/u4:12 Tainted: G W 6.6.0-rc5-next-20231009 #14109 >> Hardware name: Samsung Exynos (Flattened Device Tree) >> Workqueue: events_unbound async_run_entry_fn >> unwind_backtrace from show_stack+0x10/0x14 >> show_stack from dump_stack_lvl+0x58/0x70 >> dump_stack_lvl from __warn+0x1a8/0x1cc >> __warn from warn_slowpath_fmt+0x18c/0x1b4 >> warn_slowpath_fmt from input_device_enabled+0x68/0x6c >> input_device_enabled from cyapa_gen3_set_power_mode+0x13c/0x1dc >> cyapa_gen3_set_power_mode from cyapa_reinitialize+0x10c/0x15c >> cyapa_reinitialize from cyapa_resume+0x48/0x98 >> cyapa_resume from dpm_run_callback+0x90/0x298 >> dpm_run_callback from device_resume+0xb4/0x258 >> device_resume from async_resume+0x20/0x64 >> async_resume from async_run_entry_fn+0x40/0x15c >> async_run_entry_fn from process_scheduled_works+0xbc/0x6a8 >> process_scheduled_works from worker_thread+0x188/0x454 >> worker_thread from kthread+0x108/0x140 >> kthread from ret_from_fork+0x14/0x28 >> Exception stack(0xf1625fb0 to 0xf1625ff8) >> ... >> ---[ end trace 0000000000000000 ]--- >> ... >> ------------[ cut here ]------------ >> WARNING: CPU: 1 PID: 1680 at drivers/input/input.c:2291 input_device_enabled+0x68/0x6c >> Modules linked in: ... >> CPU: 1 PID: 1680 Comm: kworker/u4:12 Tainted: G W 6.6.0-rc5-next-20231009 #14109 >> Hardware name: Samsung Exynos (Flattened Device Tree) >> Workqueue: events_unbound async_run_entry_fn >> unwind_backtrace from show_stack+0x10/0x14 >> show_stack from dump_stack_lvl+0x58/0x70 >> dump_stack_lvl from __warn+0x1a8/0x1cc >> __warn from warn_slowpath_fmt+0x18c/0x1b4 >> warn_slowpath_fmt from input_device_enabled+0x68/0x6c >> input_device_enabled from cyapa_gen3_set_power_mode+0x13c/0x1dc >> cyapa_gen3_set_power_mode from cyapa_reinitialize+0x10c/0x15c >> cyapa_reinitialize from cyapa_resume+0x48/0x98 >> cyapa_resume from dpm_run_callback+0x90/0x298 >> dpm_run_callback from device_resume+0xb4/0x258 >> device_resume from async_resume+0x20/0x64 >> async_resume from async_run_entry_fn+0x40/0x15c >> async_run_entry_fn from process_scheduled_works+0xbc/0x6a8 >> process_scheduled_works from worker_thread+0x188/0x454 >> worker_thread from kthread+0x108/0x140 >> kthread from ret_from_fork+0x14/0x28 >> Exception stack(0xf1625fb0 to 0xf1625ff8) >> ... >> ---[ end trace 0000000000000000 ]--- >> >> Fixes: d69f0a43c677 ("Input: use input_device_enabled()") >> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> > > Gentle ping? Thanks for pinging this gently ;) Unfortunately I am unable to test it now, but I assume this fixes the problem for you. If so, you can add my Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com> > >> --- >> drivers/input/mouse/cyapa.c | 12 +++++++++++- >> 1 file changed, 11 insertions(+), 1 deletion(-) >> >> diff --git a/drivers/input/mouse/cyapa.c b/drivers/input/mouse/cyapa.c >> index a84098448f5b..cf23f95b5f11 100644 >> --- a/drivers/input/mouse/cyapa.c >> +++ b/drivers/input/mouse/cyapa.c >> @@ -1347,10 +1347,16 @@ static int cyapa_suspend(struct device *dev) >> u8 power_mode; >> int error; >> >> - error = mutex_lock_interruptible(&cyapa->state_sync_lock); >> + error = mutex_lock_interruptible(&cyapa->input->mutex); >> if (error) >> return error; >> >> + error = mutex_lock_interruptible(&cyapa->state_sync_lock); >> + if (error) { >> + mutex_unlock(&cyapa->input->mutex); >> + return error; >> + } >> + >> /* >> * Runtime PM is enable only when device is in operational mode and >> * users in use, so need check it before disable it to >> @@ -1385,6 +1391,8 @@ static int cyapa_suspend(struct device *dev) >> cyapa->irq_wake = (enable_irq_wake(client->irq) == 0); >> >> mutex_unlock(&cyapa->state_sync_lock); >> + mutex_unlock(&cyapa->input->mutex); >> + >> return 0; >> } >> >> @@ -1394,6 +1402,7 @@ static int cyapa_resume(struct device *dev) >> struct cyapa *cyapa = i2c_get_clientdata(client); >> int error; >> >> + mutex_lock(&cyapa->input->mutex); >> mutex_lock(&cyapa->state_sync_lock); >> >> if (device_may_wakeup(dev) && cyapa->irq_wake) { >> @@ -1412,6 +1421,7 @@ static int cyapa_resume(struct device *dev) >> enable_irq(client->irq); >> >> mutex_unlock(&cyapa->state_sync_lock); >> + mutex_unlock(&cyapa->input->mutex); >> return 0; >> } >> > > Best regards ^ permalink raw reply [flat|nested] 3+ messages in thread
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2023-10-09 12:10 ` [PATCH] Input: cyapa - add missing input core locking to suspend/resume functions Marek Szyprowski
2024-04-25 10:02 ` Marek Szyprowski
2024-04-25 17:04 ` Andrzej Pietrasiewicz
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