On 21/08/2020 23:34, Sasha Levin wrote: > On Fri, Aug 21, 2020 at 05:19:52PM -0300, Jason Gunthorpe wrote: >> On Fri, Aug 21, 2020 at 03:53:22PM -0400, Sasha Levin wrote: >>> On Fri, Aug 21, 2020 at 04:40:36PM -0300, Jason Gunthorpe wrote: >>> > On Fri, Aug 21, 2020 at 12:14:16PM -0400, Sasha Levin wrote: >>> > > From: Gal Pressman <[email protected]> >>> > > >>> > > [ Upstream commit d4f9cb5c5b224dca3ff752c1bb854250bf114944 ] >>> > > >>> > > Add support for 0xefa1 devices. >>> > > >>> > > Link: >>> > > https://lore.kernel.org/r/[email protected] >>> > > Reviewed-by: Shadi Ammouri <[email protected]> >>> > > Reviewed-by: Yossi Leybovich <[email protected]> >>> > > Signed-off-by: Gal Pressman <[email protected]> >>> > > Signed-off-by: Jason Gunthorpe <[email protected]> >>> > > Signed-off-by: Sasha Levin <[email protected]> >>> > > drivers/infiniband/hw/efa/efa_main.c | 6 ++++-- >>> > > 1 file changed, 4 insertions(+), 2 deletions(-) >>> > >>> > Wait, what? Why is this being autosel'd? >>> >>> Stable trees try to pick up device enablement patches (such as patches >>> that add PCI IDs). I suppose that AUTOSEL get pretty eager to grab >>> those. >> >> Is it so common that old drivers will work with new HW with just a >> PCI_ID update? >> >> I would have guessed that is the minority situation > > So keep in mind that a lot of it is not brand new HW, but rather same > HW repackaged by a different vendor, or HW that received minor tweaks > but where the old driver still works. > > I suppose it's more common in the USB ID world these days, so I guess > I'll give PCI IDs a closer look next time.
FWIW, Jason is right, this patch will break without taking the rest of the series: https://lore.kernel.org/linux-rdma/[email protected]/ Thanks Jason and Sasha.
