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authorBjorn Helgaas <bhelgaas@google.com>2015-08-20 00:08:15 -0500
committerBjorn Helgaas <bhelgaas@google.com>2015-08-20 17:16:37 -0500
commit45ea2a5fed6dacb9bb0558d8b21eacc1c45d5bb4 (patch)
treeafc4d5833b68df407dff1f448c190503894ac52b /include/linux/mm.h
parentb35b1df5e6c213b0b0322e6c231b7111efe4a390 (diff)
downloadlinux-linaro-stable-45ea2a5fed6dacb9bb0558d8b21eacc1c45d5bb4.tar.gz
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@math.ut.ee Reported-by: Meelis Roos <mroos@linux.ee> Reported-by: Helge Deller <deller@gmx.de> Tested-by: Helge Deller <deller@gmx.de> Based-on-idea-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Yinghai Lu <yinghai@kernel.org> CC: stable@vger.kernel.org # v3.19+
Diffstat (limited to 'include/linux/mm.h')
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