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ahci: Use sizeof(fis) instead of hardcoding '20' 

This cleanup replaces the hardcoded use of '20', which represents the
number of bytes in the FIS, with sizeof(fis).

Signed-off-by: Taylor Hutt <thutt@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Taylor Hutt 2012-10-29 05:23:55 +00:00 committed by Tom Rini
parent 19d1d41e84
commit c873111565
1 changed files with 5 additions and 5 deletions
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10
drivers/block/ahci.c
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@ -383,14 +383,14 @@ static void ahci_set_feature(u8 port)
u8 fis[20];
/* set feature */
memset(fis, 0, 20);
memset(fis, 0, sizeof(fis));
fis[0] = 0x27;
fis[1] = 1 << 7;
fis[2] = ATA_CMD_SETF;
fis[3] = SETFEATURES_XFER;
fis[12] = __ilog2(probe_ent->udma_mask + 1) + 0x40 - 0x01;
memcpy((unsigned char *)pp->cmd_tbl, fis, 20);
memcpy((unsigned char *)pp->cmd_tbl, fis, sizeof(fis));
ahci_fill_cmd_slot(pp, cmd_fis_len);
writel(1, port_mmio + PORT_CMD_ISSUE);
readl(port_mmio + PORT_CMD_ISSUE);
@ -559,7 +559,7 @@ static int ata_scsiop_inquiry(ccb *pccb)
if (pccb->datalen <= 35)
return 0;
memset(fis, 0, 20);
memset(fis, 0, sizeof(fis));
/* Construct the FIS */
fis[0] = 0x27; /* Host to device FIS. */
fis[1] = 1 << 7; /* Command FIS. */
@ -570,7 +570,7 @@ static int ata_scsiop_inquiry(ccb *pccb)
if (!(tmpid = malloc(sizeof(hd_driveid_t))))
return -ENOMEM;
if (ahci_device_data_io(port, (u8 *) &fis, 20, tmpid,
if (ahci_device_data_io(port, (u8 *) &fis, sizeof(fis), tmpid,
sizeof(hd_driveid_t), 0)) {
debug("scsi_ahci: SCSI inquiry command failure.\n");
return -EIO;
@ -620,7 +620,7 @@ static int ata_scsiop_read_write(ccb *pccb, u8 is_write)
is_write ? "write" : "read", (unsigned)lba, blocks);
/* Preset the FIS */
memset(fis, 0, 20);
memset(fis, 0, sizeof(fis));
fis[0] = 0x27; /* Host to device FIS. */
fis[1] = 1 << 7; /* Command FIS. */
/* Command byte (read/write). */