* Re: Patch "driver core: platform: Emit a warning if a remove callback returned non-zero" has been added to the 5.10-stable tree [not found] <20240616021857.1688223-1-sashal@kernel.org> @ 2024-06-16 7:32 ` Uwe Kleine-König 2024-06-19 11:53 ` Greg Kroah-Hartman 0 siblings, 1 reply; 2+ messages in thread From: Uwe Kleine-König @ 2024-06-16 7:32 UTC (permalink / raw) To: stable, stable-commits; +Cc: Greg Kroah-Hartman, Rafael J. Wysocki [-- Attachment #1.1: Type: text/plain, Size: 2198 bytes --] Hello Sasha, On 6/16/24 04:18, Sasha Levin wrote: > This is a note to let you know that I've just added the patch titled > > driver core: platform: Emit a warning if a remove callback returned non-zero > > to the 5.10-stable tree which can be found at: > http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary > > The filename of the patch is: > driver-core-platform-emit-a-warning-if-a-remove-call.patch > and it can be found in the queue-5.10 subdirectory. > > If you, or anyone else, feels it should not be added to the stable tree, > please let <stable@vger.kernel.org> know about it. > > > > commit 2f1ac60bc9668567f021c314312563951039f77b > Author: Uwe Kleine-König <uwe@kleine-koenig.org> > Date: Sun Feb 7 22:15:37 2021 +0100 > > driver core: platform: Emit a warning if a remove callback returned non-zero > > [ Upstream commit e5e1c209788138f33ca6558bf9f572f6904f486d ] > > The driver core ignores the return value of a bus' remove callback. However > a driver returning an error code is a hint that there is a problem, > probably a driver author who expects that returning e.g. -EBUSY has any > effect. > > The right thing to do would be to make struct platform_driver::remove() > return void. With the immense number of platform drivers this is however a > big quest and I hope to prevent at least a few new drivers that return an > error code here. > > Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org> > Link: https://lore.kernel.org/r/20210207211537.19992-1-uwe@kleine-koenig.org > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > Stable-dep-of: 55c421b36448 ("mmc: davinci: Don't strip remove function when driver is builtin") > Signed-off-by: Sasha Levin <sashal@kernel.org> That looks wrong. If this patch should be included in stable, it shouldn't be because it's a dependency. 55c421b36448 works without this patch for sure. Either backport e5e1c2097881 because you think that warning should be in 5.10.x, or don't backport it. Best regards Uwe [-- Attachment #2: OpenPGP digital signature --] [-- Type: application/pgp-signature, Size: 488 bytes --] ^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Patch "driver core: platform: Emit a warning if a remove callback returned non-zero" has been added to the 5.10-stable tree 2024-06-16 7:32 ` Patch "driver core: platform: Emit a warning if a remove callback returned non-zero" has been added to the 5.10-stable tree Uwe Kleine-König @ 2024-06-19 11:53 ` Greg Kroah-Hartman 0 siblings, 0 replies; 2+ messages in thread From: Greg Kroah-Hartman @ 2024-06-19 11:53 UTC (permalink / raw) To: Uwe Kleine-König; +Cc: stable, stable-commits, Rafael J. Wysocki On Sun, Jun 16, 2024 at 09:32:45AM +0200, Uwe Kleine-König wrote: > Hello Sasha, > > On 6/16/24 04:18, Sasha Levin wrote: > > This is a note to let you know that I've just added the patch titled > > > > driver core: platform: Emit a warning if a remove callback returned non-zero > > > > to the 5.10-stable tree which can be found at: > > http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary > > > > The filename of the patch is: > > driver-core-platform-emit-a-warning-if-a-remove-call.patch > > and it can be found in the queue-5.10 subdirectory. > > > > If you, or anyone else, feels it should not be added to the stable tree, > > please let <stable@vger.kernel.org> know about it. > > > > > > > > commit 2f1ac60bc9668567f021c314312563951039f77b > > Author: Uwe Kleine-König <uwe@kleine-koenig.org> > > Date: Sun Feb 7 22:15:37 2021 +0100 > > > > driver core: platform: Emit a warning if a remove callback returned non-zero > > [ Upstream commit e5e1c209788138f33ca6558bf9f572f6904f486d ] > > The driver core ignores the return value of a bus' remove callback. However > > a driver returning an error code is a hint that there is a problem, > > probably a driver author who expects that returning e.g. -EBUSY has any > > effect. > > The right thing to do would be to make struct platform_driver::remove() > > return void. With the immense number of platform drivers this is however a > > big quest and I hope to prevent at least a few new drivers that return an > > error code here. > > Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org> > > Link: https://lore.kernel.org/r/20210207211537.19992-1-uwe@kleine-koenig.org > > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > > Stable-dep-of: 55c421b36448 ("mmc: davinci: Don't strip remove function when driver is builtin") > > Signed-off-by: Sasha Levin <sashal@kernel.org> > > That looks wrong. If this patch should be included in stable, it shouldn't > be because it's a dependency. 55c421b36448 works without this patch for > sure. > > Either backport e5e1c2097881 because you think that warning should be in > 5.10.x, or don't backport it. I've fixed this up by hand and dropped all of the platform patches now, thanks for the review! greg k-h ^ permalink raw reply [flat|nested] 2+ messages in thread
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2024-06-16 7:32 ` Patch "driver core: platform: Emit a warning if a remove callback returned non-zero" has been added to the 5.10-stable tree Uwe Kleine-König
2024-06-19 11:53 ` Greg Kroah-Hartman
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