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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2007-08-07 08:05:10 +1000
committerPaul Mackerras <paulus@samba.org>2007-08-10 21:04:42 +1000
commit8f2ea1fd3f97ab7a809e939b5b9005a16f862439 (patch)
tree032d1fff16d11eac353a1174febd70bbdbf2c991 /arch/powerpc
parent939e60f6808a9ffd3a4e5f145057379c138c89aa (diff)
[POWERPC] Fix initialization and usage of dma_mask
powerpc has a couple of bugs in the usage of dma_masks that tend to break when drivers explicitly try to set a 32-bit mask for example. First, the code that generates the pci devices from the OF device-tree doesn't initialize the mask properly, then our implementation of set_dma_mask() was trying to validate the -previous- mask value, not the one passed in as an argument. This fixes these problems. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/kernel/pci_64.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index a97e23ac197..291ffbc360c 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -313,6 +313,7 @@ struct pci_dev *of_create_pci_dev(struct device_node *node,
dev->current_state = 4; /* unknown power state */
dev->error_state = pci_channel_io_normal;
+ dev->dma_mask = 0xffffffff;
if (!strcmp(type, "pci") || !strcmp(type, "pciex")) {
/* a PCI-PCI bridge */