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| author | Jesse Barnes | 2010-11-05 20:16:36 +0100 |
|---|---|---|
| committer | Jesse Barnes | 2010-11-11 18:38:14 +0100 |
| commit | 97c145f7c87453cec90e91238fba5fe2c1561b32 (patch) | |
| tree | e69b486547e713b6a9358ad780dcdf7b697a7912 /drivers/pci/bus.c | |
| parent | PCI: fix size checks for mmap() on /proc/bus/pci files (diff) | |
| download | kernel-qcow2-linux-97c145f7c87453cec90e91238fba5fe2c1561b32.tar.gz kernel-qcow2-linux-97c145f7c87453cec90e91238fba5fe2c1561b32.tar.xz kernel-qcow2-linux-97c145f7c87453cec90e91238fba5fe2c1561b32.zip | |
PCI: read current power state at enable time
When we enable a PCI device, we avoid doing a lot of the initial setup
work if the device's enable count is non-zero. If we don't fetch the
power state though, we may later fail to set up MSI due to the unknown
status. So pick it up before we short circuit the rest due to a
pre-existing enable or mismatched enable/disable pair (as happens with
VGA devices, which are special in a special way).
Tested-by: Jesse Brandeburg <jesse.brandeburg@gmail.com>
Reported-by: Dave Airlie <airlied@linux.ie>
Tested-by: Dave Airlie <airlied@linux.ie>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/bus.c')
0 files changed, 0 insertions, 0 deletions