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| author | Shmulik Ravid <shmulikr@broadcom.com> | 2009-12-03 22:27:51 +0200 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-12-04 15:49:44 -0800 |
| commit | 04b55c4732780381410e52db0e9bfb7661f2b4b3 (patch) | |
| tree | 6c8a96438f40aa60038a9bd422c38833bdc7aa7a /drivers/pci/setup-bus.c | |
| parent | bb965401fd2afa26629b244e7bb2e48a117dc238 (diff) | |
| download | kernel_samsung_smdk4412-04b55c4732780381410e52db0e9bfb7661f2b4b3.zip kernel_samsung_smdk4412-04b55c4732780381410e52db0e9bfb7661f2b4b3.tar.gz kernel_samsung_smdk4412-04b55c4732780381410e52db0e9bfb7661f2b4b3.tar.bz2 | |
PCI: read-modify-write the pcie device control register when initiating pcie flr
The pcie_flr routine writes the device control register with the FLR bit
set clearing all other fields for the FLR duration. Among other fields,
the Max_Payload_Size is also cleared which can cause errors if there are
transactions lurking in the HW pipeline. The patch replaces the blank
write with read-modify-write of the control register keeping the other
fields intact.
Signed-off-by: Shmulik Ravid <shmulikr@broadcom.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/setup-bus.c')
0 files changed, 0 insertions, 0 deletions