For the PCI_X_STATUS register, pcix_get_max_mmrbc() is returning an incorrect value, which is based on: (stat & PCI_X_STATUS_MAX_READ) >> 12 Valid return values are 512, 1024, 2048, 4096, which correspond to a 'stat' (masked and right shifted by 21) of 0, 1, 2, 3, respectively. A right shift by 11 would generate the correct return value when 'stat' (masked and right shifted by 21) has a value of 1 or 2. But for a value of 0 or 3 it's not possible to generate the correct return value by only right shifting. Fix is based on pcix_get_mmrbc()'s similar dealings with the PCI_X_CMD register. Signed-off-by: Dean Nelson <dnelson@xxxxxxxxxx> --- drivers/pci/pci.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 5b548ae..1decd4f 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -2571,7 +2571,7 @@ int pcix_get_max_mmrbc(struct pci_dev *dev) if (err) return -EINVAL; - return (stat & PCI_X_STATUS_MAX_READ) >> 12; + return 512 << ((stat & PCI_X_STATUS_MAX_READ) >> 21); } EXPORT_SYMBOL(pcix_get_max_mmrbc); -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
