diff options
| author | Bjorn Helgaas <bhelgaas@google.com> | 2015-08-20 00:08:15 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-09-13 09:07:49 -0700 |
| commit | 7aadce453a529fdca8d8e2d4d7d494f9646748c4 (patch) | |
| tree | 6542d97fb40ab53db0f692f2a587feb4d75801cd /drivers/pci | |
| parent | e1768fd6fdba1345321ab350f60ec109cb832c01 (diff) | |
PCI: Don't use 64-bit bus addresses on PA-RISC
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@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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/Kconfig | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig index 73de4efcbe6e..944f50015ed0 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_MSI |