Rafael J. Wysocki a6cb9ee7ca PCI: Retry BARs restoration for Type 0 headers only ... Some shortcomings introduced into pci_restore_state() by commit 26f41062f2 ("PCI: check for pci bar restore completion and retry") have been fixed by recent commit ebfc5b802f ("PCI: Fix regression in pci_restore_state(), v3"), but that commit treats all PCI devices as those with Type 0 configuration headers. That is not entirely correct, because Type 1 and Type 2 headers have different layouts. In particular, the area occupied by BARs in Type 0 config headers contains the secondary status register in Type 1 ones and it doesn't make sense to retry the restoration of that register even if the value read back from it after a write is not the same as the written one (it very well may be different). For this reason, make pci_restore_state() only retry the restoration of BARs for Type 0 config headers. This effectively makes it behave as before commit 26f41062f2 for all header types except for Type 0. Tested-by: Mikko Vinni <mmvinni@yahoo.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2012-04-16 18:33:35 -07:00
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hotplug-pci.c
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pci.c	PCI: Retry BARs restoration for Type 0 headers only	2012-04-16 18:33:35 -07:00
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