From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Kashyap, Desai" Subject: [PATCH 3/6] mptsas : PAE Kernel more than 4 GB kernel panic Date: Wed, 2 Sep 2009 11:44:57 +0530 Message-ID: <20090902061446.GD20211@lsi.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from exprod7og117.obsmtp.com ([64.18.2.6]:43092 "EHLO exprod7og117.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755909AbZIBGiL (ORCPT ); Wed, 2 Sep 2009 02:38:11 -0400 Content-Disposition: inline Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: linux-scsi@vger.kernel.org Cc: James.Bottomley@HansenPartnership.com, Eric.Moore@lsi.com, Sathya.Prakash@lsi.com, stable@kernel.org 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 --- 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 @@ mpt_add_sge_64bit(void *pAddr, u32 flagslength, dma_addr_t dma_addr) { 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 @@ mpt_add_sge_64bit_1078(void *pAddr, u32 flagslength, dma_addr_t dma_addr) 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 @@ mpt_add_chain_64bit(void *pAddr, u8 next, u16 length, dma_addr_t dma_addr) 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); }