[SCSI] mptsas : PAE Kernel more than 4 GB kernel panic
This patch is solving problem for PAE kernel DMA operation.
On PAE system dma_addr and unsigned long will have different
values.
Now dma_addr is not type casted using unsigned long.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c
index 8ab7b37..76fa2ee 100644
--- a/drivers/message/fusion/mptbase.c
+++ b/drivers/message/fusion/mptbase.c
@@ -1015,9 +1015,9 @@
{
SGESimple64_t *pSge = (SGESimple64_t *) pAddr;
pSge->Address.Low = cpu_to_le32
- (lower_32_bits((unsigned long)(dma_addr)));
+ (lower_32_bits(dma_addr));
pSge->Address.High = cpu_to_le32
- (upper_32_bits((unsigned long)dma_addr));
+ (upper_32_bits(dma_addr));
pSge->FlagsLength = cpu_to_le32
((flagslength | MPT_SGE_FLAGS_64_BIT_ADDRESSING));
}
@@ -1038,8 +1038,8 @@
u32 tmp;
pSge->Address.Low = cpu_to_le32
- (lower_32_bits((unsigned long)(dma_addr)));
- tmp = (u32)(upper_32_bits((unsigned long)dma_addr));
+ (lower_32_bits(dma_addr));
+ tmp = (u32)(upper_32_bits(dma_addr));
/*
* 1078 errata workaround for the 36GB limitation
@@ -1101,7 +1101,7 @@
pChain->NextChainOffset = next;
pChain->Address.Low = cpu_to_le32(tmp);
- tmp = (u32)(upper_32_bits((unsigned long)dma_addr));
+ tmp = (u32)(upper_32_bits(dma_addr));
pChain->Address.High = cpu_to_le32(tmp);
}