PCI/ASPM: Use correct capability pointer to program LTR_L1.2_THRESHOLD

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commit c00054f540 upstream.

Previously we programmed the LTR_L1.2_THRESHOLD in the parent (upstream)
device using the capability pointer of the *child* (downstream) device,
which corrupted some random word of the parent's config space.

Use the parent's L1 SS capability pointer to program its
LTR_L1.2_THRESHOLD.

Fixes: aeda9adeba ("PCI/ASPM: Configure L1 substate settings")
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Vidya Sagar <vidyas@nvidia.com>
CC: Rajat Jain <rajatja@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Bjorn Helgaas 2017-11-13 15:05:50 -06:00 • committed by Greg Kroah-Hartman

parent 576bdf9642

commit d42e6a246c

1 changed files with 1 additions and 1 deletions

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drivers/pci/pcie/aspm.c

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