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authorSimon Kågström <simon.kagstrom@netinsight.net>2014-03-17 17:42:35 +0400
committerArnd Bergmann <arnd@arndb.de>2014-03-18 19:03:43 +0400
commitbfdad565ae0a61ac943974b8ae61ec0ed55ceb04 (patch)
tree8a38af677ffa2f7e9225a543cfbbc8f0b52f28a3 /arch/arm/mach-ixp4xx/common-pci.c
parent64cf9d07ef1f5ed6abc6ed8a2420eb2849f7f444 (diff)
downloadlinux-bfdad565ae0a61ac943974b8ae61ec0ed55ceb04.tar.xz
ARM: ixp4xx: Make dma_set_coherent_mask common, correct implementation
Non-PCI devices can use the entire 32-bit range, PCI dittos are limited to the first 64MiB. Also actually setup coherent_dma_mask. The patch has been verified on a board with 128MiB memory, one ipx4xx_eth device and a e100 PCI device. Signed-off-by: Simon Kagstrom <simon.kagstrom@netinsight.net> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/mach-ixp4xx/common-pci.c')
-rw-r--r--arch/arm/mach-ixp4xx/common-pci.c9
1 files changed, 0 insertions, 9 deletions
diff --git a/arch/arm/mach-ixp4xx/common-pci.c b/arch/arm/mach-ixp4xx/common-pci.c
index 200970d56f6d..055d81694a17 100644
--- a/arch/arm/mach-ixp4xx/common-pci.c
+++ b/arch/arm/mach-ixp4xx/common-pci.c
@@ -481,14 +481,5 @@ int ixp4xx_setup(int nr, struct pci_sys_data *sys)
return 1;
}
-int dma_set_coherent_mask(struct device *dev, u64 mask)
-{
- if (mask >= SZ_64M - 1)
- return 0;
-
- return -EIO;
-}
-
EXPORT_SYMBOL(ixp4xx_pci_read);
EXPORT_SYMBOL(ixp4xx_pci_write);
-EXPORT_SYMBOL(dma_set_coherent_mask);