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| author | Shmulik Ravid | 2009-12-03 21:27:51 +0100 |
|---|---|---|
| committer | Jesse Barnes | 2009-12-05 00:49:44 +0100 |
| commit | 04b55c4732780381410e52db0e9bfb7661f2b4b3 (patch) | |
| tree | 6c8a96438f40aa60038a9bd422c38833bdc7aa7a /drivers/pci/setup-bus.c | |
| parent | PCI: show dma_mask bits in /sys (diff) | |
| download | kernel-qcow2-linux-04b55c4732780381410e52db0e9bfb7661f2b4b3.tar.gz kernel-qcow2-linux-04b55c4732780381410e52db0e9bfb7661f2b4b3.tar.xz kernel-qcow2-linux-04b55c4732780381410e52db0e9bfb7661f2b4b3.zip | |
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