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| author | Jon Mason <jdmason@kudzu.us> | 2011-06-28 18:26:25 -0500 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2011-07-22 09:06:51 -0700 |
| commit | c9b378c7cbf623649e4ca64f955f2afd12ef01b2 (patch) | |
| tree | 2fde509dd86d2548c5bdb8d00413bda8b513897f /drivers/pci/pci.c | |
| parent | 0cab0841dc1400f633a7e1ac1e448518692f927a (diff) | |
| download | linux-c9b378c7cbf623649e4ca64f955f2afd12ef01b2.tar.gz linux-c9b378c7cbf623649e4ca64f955f2afd12ef01b2.tar.bz2 linux-c9b378c7cbf623649e4ca64f955f2afd12ef01b2.zip | |
PCI: correct pcie_set_readrq write size
When setting the PCI-E MRRS, pcie_set_readrq queries the current
settings via a pci_read_config_word call but writes the modified result
via a pci_write_config_dword. This results in writing 16 more bits than
were queried.
Also, the function description comment is slightly incorrect.
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/pci.c')
| -rw-r--r-- | drivers/pci/pci.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index d549bbc93cdd..08a95b369d85 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -3191,7 +3191,7 @@ EXPORT_SYMBOL(pcie_get_readrq); * @rq: maximum memory read count in bytes * valid values are 128, 256, 512, 1024, 2048, 4096 * - * If possible sets maximum read byte count + * If possible sets maximum memory read request in bytes */ int pcie_set_readrq(struct pci_dev *dev, int rq) { @@ -3214,7 +3214,7 @@ int pcie_set_readrq(struct pci_dev *dev, int rq) if ((ctl & PCI_EXP_DEVCTL_READRQ) != v) { ctl &= ~PCI_EXP_DEVCTL_READRQ; ctl |= v; - err = pci_write_config_dword(dev, cap + PCI_EXP_DEVCTL, ctl); + err = pci_write_config_word(dev, cap + PCI_EXP_DEVCTL, ctl); } out: |