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authorManuel Ullmann <labre@posteo.de>2022-05-04 22:30:44 +0300
committerPaolo Abeni <pabeni@redhat.com>2022-05-10 11:29:54 +0300
commit1809c30b6e5a83a1de1435fe01aaa4de4d626a7c (patch)
tree1e3f4080825998d185115118be7d1e57937d038c /drivers/net/ethernet/aquantia/atlantic
parentfc54e39199928cb09f5423654f344631ac5956fb (diff)
downloadlinux-1809c30b6e5a83a1de1435fe01aaa4de4d626a7c.tar.xz
net: atlantic: always deep reset on pm op, fixing up my null deref regression
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_xXSwdXcvZqKD5aSqsqeNj5Izco4MYEwnx5cySXVEc9-x_WC4C3kAoCqNTi-H38frroUK17iobNVnkLtW36V6VWGSQEOHXhmVMm5iQ=@protonmail.com/ 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>
Diffstat (limited to 'drivers/net/ethernet/aquantia/atlantic')
-rw-r--r--drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c4
1 files 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 3a529ee8c834..831833911a52 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c
@@ -449,7 +449,7 @@ 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)
@@ -459,7 +459,7 @@ 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 = {