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ahci: Fix gcc 4.4 compiler warning 

ahci.c: In function 'ata_scsiop_read_capacity10':
ahci.c:616: warning: dereferencing type-punned pointer will break strict-aliasing rules

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Kumar Gala 2009-07-13 09:24:00 -05:00 committed by Wolfgang Denk
parent 51d91e1a25
commit cb6d0b72c2
1 changed files with 6 additions and 8 deletions
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14
drivers/block/ahci.c
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@ -602,7 +602,7 @@ static int ata_scsiop_read10(ccb * pccb)
*/ */
static int ata_scsiop_read_capacity10(ccb *pccb) static int ata_scsiop_read_capacity10(ccb *pccb)
{ {
u8 buf[8]; u32 cap;
if (!ataid[pccb->target]) { if (!ataid[pccb->target]) {
printf("scsi_ahci: SCSI READ CAPACITY10 command failure. " printf("scsi_ahci: SCSI READ CAPACITY10 command failure. "
@ -611,14 +611,12 @@ static int ata_scsiop_read_capacity10(ccb *pccb)
return -EPERM; return -EPERM;
} }
memset(buf, 0, 8); cap = le32_to_cpu(ataid[pccb->target]->lba_capacity);
memcpy(pccb->pdata, &cap, sizeof(cap));
*(u32 *) buf = le32_to_cpu(ataid[pccb->target]->lba_capacity); pccb->pdata[4] = pccb->pdata[5] = 0;
pccb->pdata[6] = 512 >> 8;
buf[6] = 512 >> 8; pccb->pdata[7] = 512 & 0xff;
buf[7] = 512 & 0xff;
memcpy(pccb->pdata, buf, 8);
return 0; return 0;
} }