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[SCSI] mptsas : PAE Kernel more than 4 GB kernel panic

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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>
This commit is contained in:
Kashyap, Desai 2009-09-02 11:44:57 +05:30 committed by James Bottomley
parent f44fd18198
commit c55b89fba9
1 changed files with 5 additions and 5 deletions
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10
drivers/message/fusion/mptbase.c
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@ -1015,9 +1015,9 @@ mpt_add_sge_64bit(void *pAddr, u32 flagslength, dma_addr_t dma_addr)
{ {
SGESimple64_t *pSge = (SGESimple64_t *) pAddr; SGESimple64_t *pSge = (SGESimple64_t *) pAddr;
pSge->Address.Low = cpu_to_le32 pSge->Address.Low = cpu_to_le32
(lower_32_bits((unsigned long)(dma_addr))); (lower_32_bits(dma_addr));
pSge->Address.High = cpu_to_le32 pSge->Address.High = cpu_to_le32
(upper_32_bits((unsigned long)dma_addr)); (upper_32_bits(dma_addr));
pSge->FlagsLength = cpu_to_le32 pSge->FlagsLength = cpu_to_le32
((flagslength | MPT_SGE_FLAGS_64_BIT_ADDRESSING)); ((flagslength | MPT_SGE_FLAGS_64_BIT_ADDRESSING));
} }
@ -1038,8 +1038,8 @@ mpt_add_sge_64bit_1078(void *pAddr, u32 flagslength, dma_addr_t dma_addr)
u32 tmp; u32 tmp;
pSge->Address.Low = cpu_to_le32 pSge->Address.Low = cpu_to_le32
(lower_32_bits((unsigned long)(dma_addr))); (lower_32_bits(dma_addr));
tmp = (u32)(upper_32_bits((unsigned long)dma_addr)); tmp = (u32)(upper_32_bits(dma_addr));
/* /*
* 1078 errata workaround for the 36GB limitation * 1078 errata workaround for the 36GB limitation
@ -1101,7 +1101,7 @@ mpt_add_chain_64bit(void *pAddr, u8 next, u16 length, dma_addr_t dma_addr)
pChain->NextChainOffset = next; pChain->NextChainOffset = next;
pChain->Address.Low = cpu_to_le32(tmp); 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); pChain->Address.High = cpu_to_le32(tmp);
} }