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PCI: Don't use 64-bit bus addresses on PA-RISC

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Meelis and Helge reported that 3a9ad0b4fd ("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 3a9ad0b4fd, we always used 32-bit PCI addresses.  After
3a9ad0b4fd, we do use 64-bit PCI addresses in 64-bit kernels, and
apparently there's some PA-RISC problem related to them.

Fixes: 3a9ad0b4fd ("PCI: Add pci_bus_addr_t")
Link: http://lkml.kernel.org/r/[email protected]
Reported-by: Meelis Roos <[email protected]>
Reported-by: Helge Deller <[email protected]>
Tested-by: Helge Deller <[email protected]>
Based-on-idea-by: Yinghai Lu <[email protected]>
Signed-off-by: Bjorn Helgaas <[email protected]>
Acked-by: Yinghai Lu <[email protected]>
CC: [email protected]	# v3.19+
This commit is contained in:
Bjorn Helgaas 2015-08-20 00:08:15 -05:00
commit 45ea2a5fed
1 changed files with 1 additions and 1 deletions
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2
drivers/pci/Kconfig
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@ -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