From: Manuel Ullmann labre@posteo.de
stable inclusion from stable-v5.10.117 commit 6aa239d82e35b9e3eb8e8c7750fd5caa377e1e15 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5L66B
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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commit 1809c30b6e5a83a1de1435fe01aaa4de4d626a7c upstream.
The impact of this regression is the same for resume that I saw on thaw: the kernel hangs and nothing except SysRq rebooting can be done.
Fixes regression in commit cbe6c3a8f8f4 ("net: atlantic: invert deep par in pm functions, preventing null derefs"), where I disabled deep pm resets in suspend and resume, trying to make sense of the atl_resume_common() deep parameter in the first place.
It turns out, that atlantic always has to deep reset on pm operations. Even though I expected that and tested resume, I screwed up by kexec-rebooting into an unpatched kernel, thus missing the breakage.
This fixup obsoletes the deep parameter of atl_resume_common, but I leave the cleanup for the maintainers to post to mainline.
Suspend and hibernation were successfully tested by the reporters.
Fixes: cbe6c3a8f8f4 ("net: atlantic: invert deep par in pm functions, preventing null derefs") Link: https://lore.kernel.org/regressions/9-Ehc_xXSwdXcvZqKD5aSqsqeNj5Izco4MYEwnx5... Reported-by: Jordan Leppert jordanleppert@protonmail.com Reported-by: Holger Hoffstaette holger@applied-asynchrony.com Tested-by: Jordan Leppert jordanleppert@protonmail.com Tested-by: Holger Hoffstaette holger@applied-asynchrony.com CC: stable@vger.kernel.org # 5.10+ Signed-off-by: Manuel Ullmann labre@posteo.de Link: https://lore.kernel.org/r/87bkw8dfmp.fsf@posteo.de Signed-off-by: Paolo Abeni pabeni@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com Acked-by: Xie XiuQi xiexiuqi@huawei.com --- drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c b/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c index bdfd462c74db..fc5ea434a27c 100644 --- a/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c +++ b/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c @@ -455,7 +455,7 @@ static int aq_pm_freeze(struct device *dev)
static int aq_pm_suspend_poweroff(struct device *dev) { - return aq_suspend_common(dev, false); + return aq_suspend_common(dev, true); }
static int aq_pm_thaw(struct device *dev) @@ -465,7 +465,7 @@ static int aq_pm_thaw(struct device *dev)
static int aq_pm_resume_restore(struct device *dev) { - return atl_resume_common(dev, false); + return atl_resume_common(dev, true); }
static const struct dev_pm_ops aq_pm_ops = {