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Date: Fri, 11 Sep 2015 15:49:58 -0700 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Meelis Roos <mroos@...ux.ee>, Helge Deller <deller@....de>, Bjorn Helgaas <bhelgaas@...gle.com>, Yinghai Lu <yinghai@...nel.org> Subject: [PATCH 4.1 57/78] PCI: Dont use 64-bit bus addresses on PA-RISC 4.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Bjorn Helgaas <bhelgaas@...gle.com> commit 45ea2a5fed6dacb9bb0558d8b21eacc1c45d5bb4 upstream. 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@math.ut.ee Reported-by: Meelis Roos <mroos@...ux.ee> Reported-by: Helge Deller <deller@....de> Tested-by: Helge Deller <deller@....de> Based-on-idea-by: Yinghai Lu <yinghai@...nel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com> Acked-by: Yinghai Lu <yinghai@...nel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- drivers/pci/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- 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_MSI -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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