Inspired by Russell King's patch[1], I found current iproc also has the same issue of "reading 32-bits from the command register, modifying the command register, and then writing it back has the effect of clearing any status bits that were indicating at that time" as pointed out by Russell. This patch fix this issue by using the pci_generic_config_write. [1]http://www.spinics.net/lists/linux-pci/msg44869.html Signed-off-by: Jisheng Zhang <jszhang@xxxxxxxxxxx> --- drivers/pci/host/pcie-iproc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/host/pcie-iproc.c b/drivers/pci/host/pcie-iproc.c index fe2efb1..0c423f2 100644 --- a/drivers/pci/host/pcie-iproc.c +++ b/drivers/pci/host/pcie-iproc.c @@ -111,7 +111,7 @@ static void __iomem *iproc_pcie_map_cfg_bus(struct pci_bus *bus, static struct pci_ops iproc_pcie_ops = { .map_bus = iproc_pcie_map_cfg_bus, .read = pci_generic_config_read32, - .write = pci_generic_config_write32, + .write = pci_generic_config_write, }; static void iproc_pcie_reset(struct iproc_pcie *pcie) -- 2.6.2 -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
