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| author | Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> | 2011-07-11 03:15:45 +0200 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2011-07-22 18:06:41 +0200 |
| commit | 0cab0841dc1400f633a7e1ac1e448518692f927a (patch) | |
| tree | 2b4ba002d6d4ee69ad351a2bcf7f9c484f696d2f /mm/fremap.c | |
| parent | x86/PCI: Preserve existing pci=bfsort whitelist for Dell systems (diff) | |
| download | linux-0cab0841dc1400f633a7e1ac1e448518692f927a.tar.xz linux-0cab0841dc1400f633a7e1ac1e448518692f927a.zip | |
PCI: pciehp: change wait time for valid configuration access
Naoki Yanagimoto reported that configuration read on some hot-added
PCIe device returns invalid value. This patch fixes this problem.
According to the PCIe spec, software must wait for at least 1 second
to judge if the hot-added device is broken after Data Link Layer State
Changed Event. This patch changes pciehp driver to wait for 1 second
after the Data Link Layer State Changed Event is detected before
initiating a configuration access instead of 100 ms.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Tested-by: Naoki Yanagimoto <yanagimoto@np.css.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'mm/fremap.c')
0 files changed, 0 insertions, 0 deletions