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PCI: Add a helper to check Power Resource Requirements _PR3 existence
authorKai-Heng Feng <kai.heng.feng@canonical.com>
Fri, 18 Oct 2019 07:38:47 +0000 (15:38 +0800)
committerTakashi Iwai <tiwai@suse.de>
Mon, 21 Oct 2019 13:13:18 +0000 (15:13 +0200)
commit19abeb60c51804b1ad87427b33323ba046d64565
tree673ac3d1e755a12b1a04610066fa15366f56a1e9tree | snapshot
parentdf77d80faf7aec0288329fac07345d2e58dbf2adcommit | diff
PCI: Add a helper to check Power Resource Requirements _PR3 existence

A driver may want to know the existence of _PR3, to choose different
runtime suspend behavior. A user will be add in next patch.

This is mostly the same as nouveau_pr3_present().

Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20191018073848.14590-1-kai.heng.feng@canonical.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
drivers/pci/pci.c diff | blob | history
include/linux/pci.h diff | blob | history
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