On 20.08.2015 21:31, Yinghai Lu wrote:
On Wed, Aug 19, 2015 at 10:42 PM, Bjorn Helgaas <bhelgaas@xxxxxxxxxx> wrote:commit 51a660a2732c Author: Bjorn Helgaas <bhelgaas@xxxxxxxxxx> Date: Thu Aug 20 00:08:15 2015 -0500 PCI: Don't use 64-bit bus addresses on PA-RISC Meelis and Helge reported that 3a9ad0b4fdcd ("PCI: Add pci_bus_addr_t") caused HPMCs on A500 and hangs on rp5470. PA-RISC does not set ARCH_DMA_ADDR_T_64BIT, even for 64-bit kernels, so prior to 3a9ad0b4fdcd, we always used 32-bit PCI addresses. After 3a9ad0b4fdcd, we do use 64-bit PCI addresses in 64-bit kernels, and apparently there's some PA-RISC problem related to them. Fixes: 3a9ad0b4fdcd ("PCI: Add pci_bus_addr_t") Link: http://lkml.kernel.org/r/alpine.LRH.2.11.1507260929000.30065@xxxxxxxxxx Reported-by: Meelis Roos <mroos@xxxxxxxx> Reported-by: Helge Deller <deller@xxxxxx> Based-on-idea-by: Yinghai Lu <yinghai@xxxxxxxxxx> Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx> diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig index 73de4ef..944f500 100644 --- a/drivers/pci/Kconfig +++ b/drivers/pci/Kconfig @@ -2,7 +2,7 @@ # PCI configuration # config PCI_BUS_ADDR_T_64BIT - def_bool y if (ARCH_DMA_ADDR_T_64BIT || 64BIT) + def_bool y if (ARCH_DMA_ADDR_T_64BIT || (64BIT && !PARISC)) depends on PCI config PCI_MSIYes, that is better. Acked-by: Yinghai Lu <yinghai@xxxxxxxxxx>
Tested-by: Helge Deller <deller@xxxxxx> and please add: CC: stable@xxxxxxxxxxxxxxx # v3.19+ Helge -- 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
