On 2013/8/6 15:37, Li Zefan wrote: > On 2013/8/6 15:23, Yijing Wang wrote: >> v1->v2: Update patch log, remove Joe's reported-by, because his problem >> was mainly caused by BIOS incorrect setting. But this patch mainly >> to fix the bug caused by device hot add. Conservatively, this >> version only update the mps problem when hot add. When the device >> mps < parent mps found, this patch try to update device mps. >> It seems unlikely device mps > parent mps after hot add device. >> So we don't care that situation. >> >> This patch need to be applied to stable 3.4+ > > In this case... > >> >> Currently we don't update device's mps vaule when doing >> pci device hot-add. The hot-added device's mps will be set >> to default value (128B). But the upstream port device's mps >> may be larger than 128B which was set by firmware during >> system bootup. In this case the new added device may not >> work normally. This patch try to update the hot added device >> mps euqal to its parent mps, if device mpss < parent mps, >> print warning. >> >> References: https://bugzilla.kernel.org/show_bug.cgi?id=60671 >> Reported-by: Yijing Wang <wangyijing@xxxxxxxxxx> >> Signed-off-by: Yijing Wang <wangyijing@xxxxxxxxxx> >> Cc: Jon Mason <jdmason@xxxxxxxx> >> Cc: stable@xxxxxxxxxxxxxxx > > The better tag is: > > Cc: <stable@xxxxxxxxxxxxxxx> # 3.4+ > > Otherwise you won't be notified if it can be applied to the most recent > stable version but failed in older versions. Will update, thanks! > > > . > -- Thanks! Yijing -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
