On Mon, 17 Sep 2018 03:02:55 +0000, Sasha Levin wrote: > From: Jakub Kicinski <jakub.kicinski@xxxxxxxxxxxxx> > > [ Upstream commit 18aa5b180f00a10c2f63944b4f0ab116bf8ea19b ] > > On some platforms with broken ACPI tables we may not have access > to the Serial Number PCIe capability. This capability is crucial > for us for switchdev operation as we use serial number as switch ID, > and for communication with management FW where interface ID is used. > > If we can't determine the Serial Number we have to fail device probe. > > Signed-off-by: Jakub Kicinski <jakub.kicinski@xxxxxxxxxxxxx> > Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> > Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx> If the problem occurs the driver would usually fail to probe anyway (e.g. due to missing SR-IOV capability), just without providing any clear message why. So the patch is not of huge importance, but I'm not opposed to back porting it. I should've put this info in the commit message, my bad.
