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 --- drivers/block/ahci.c | 14 ++++++-------- 1 files changed, 6 insertions(+), 8 deletions(-)
diff --git a/drivers/block/ahci.c b/drivers/block/ahci.c index e1b66fd..b0d1792 100644 --- a/drivers/block/ahci.c +++ b/drivers/block/ahci.c @@ -602,7 +602,7 @@ static int ata_scsiop_read10(ccb * pccb) */ static int ata_scsiop_read_capacity10(ccb *pccb) { - u8 buf[8]; + u32 cap;
if (!ataid[pccb->target]) { printf("scsi_ahci: SCSI READ CAPACITY10 command failure. " @@ -611,14 +611,12 @@ static int ata_scsiop_read_capacity10(ccb *pccb) 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); - - buf[6] = 512 >> 8; - buf[7] = 512 & 0xff; - - memcpy(pccb->pdata, buf, 8); + pccb->pdata[4] = pccb->pdata[5] = 0; + pccb->pdata[6] = 512 >> 8; + pccb->pdata[7] = 512 & 0xff;
return 0; }