diff options
author | Emil Velikov <emil.velikov@collabora.com> | 2016-11-21 16:24:49 -0600 |
---|---|---|
committer | Bjorn Helgaas <bhelgaas@google.com> | 2016-11-21 16:25:32 -0600 |
commit | 702ed3be1b1bf4dea05954168321741c0910c645 (patch) | |
tree | 4148dde5865bb993433dbf80be09d7a26b2121ca /drivers/scsi | |
parent | 1001354ca34179f3db924eb66672442a173147dc (diff) |
PCI: Create revision file in sysfs
Currently the revision isn't available via sysfs/libudev thus if one wants
to know the value one needs to read through the config file, which can be
quite time-consuming because it wakes/powers up the device.
There are at least two userspace components which could make use the new
file: libpciaccess and libdrm. The former wakes up _every_ PCI device,
which can be observed via glxinfo when using Mesa 10.0+ drivers. The
latter, in association with Mesa 13.0, can lead to 2-3 second delays while
starting firefox, thunderbird or chromium.
Link: https://bugs.freedesktop.org/show_bug.cgi?id=98502
Tested-by: Mauro Santos <registo.mailling@gmail.com>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch
CC: Greg KH <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/scsi')
0 files changed, 0 insertions, 0 deletions