sata_dwc.c: Fix GCC 4.6 build warnings

Fix:
sata_dwc.c: In function 'sata_dwc_softreset':
sata_dwc.c:444:5: warning: variable 'status' set but not used [-Wunused-but-set-variable]
sata_dwc.c:443:6: warning: variable 'serror' set but not used [-Wunused-but-set-variable]
sata_dwc.c: In function 'scan_sata':
sata_dwc.c:654:16: warning: variable 'lba_desc' set but not used [-Wunused-but-set-variable]
sata_dwc.c:538:16: warning: variable 'xfer_mask' set but not used [-Wunused-but-set-variable]
sata_dwc.c: In function 'ata_dev_read_id':
sata_dwc.c:747:14: warning: variable 'reason' set but not used [-Wunused-but-set-variable]
sata_dwc.c: In function 'ata_dev_read_sectors':
sata_dwc.c:1810:6: warning: variable 'rc' set but not used [-Wunused-but-set-variable]
sata_dwc.c: In function 'ata_dev_write_sectors':
sata_dwc.c:1994:6: warning: variable 'rc' set but not used [-Wunused-but-set-variable]

Signed-off-by: Stefan Roese <sr@denx.de>

diff --git a/drivers/block/sata_dwc.c b/drivers/block/sata_dwc.c
index b2b3804be9b3989527e330dfa56377b0587c7653..69ec5fdb795d56a3c6f98aeceed324f42973d230 100644 (file)
--- a/drivers/block/sata_dwc.c
+++ b/drivers/block/sata_dwc.c
@@ -440,11 +440,9 @@ static int sata_dwc_softreset(struct ata_port *ap)
 {
        u8 nsect,lbal = 0;
        u8 tmp = 0;
-       u32 serror = 0;
-       u8 status = 0;
        struct ata_ioports *ioaddr = &ap->ioaddr;
 
-       serror = in_le32((void *)ap->ioaddr.scr_addr + (SCR_ERROR * 4));
+       in_le32((void *)ap->ioaddr.scr_addr + (SCR_ERROR * 4));
 
        writeb(0x55, ioaddr->nsect_addr);
        writeb(0xaa, ioaddr->lbal_addr);
@@ -476,7 +474,7 @@ static int sata_dwc_softreset(struct ata_port *ap)
        writeb(ap->ctl, ioaddr->ctl_addr);
 
        msleep(150);
-       status = ata_check_status(ap);
+       ata_check_status(ap);
 
        msleep(50);
        ata_check_status(ap);
@@ -535,7 +533,6 @@ int scan_sata(int dev)
        const u16 *id;
        struct ata_device *ata_dev = &ata_device;
        unsigned long pio_mask, mwdma_mask, udma_mask;
-       unsigned long xfer_mask;
        char revbuf[7];
        u16 iobuf[ATA_SECTOR_WORDS];
 
@@ -629,10 +626,6 @@ int scan_sata(int dev)
        if (id[ATA_ID_FIELD_VALID] & (1 << 2))
                udma_mask = id[ATA_ID_UDMA_MODES] & 0xff;
 
-       xfer_mask = ((pio_mask << ATA_SHIFT_PIO) & ATA_MASK_PIO) |
-               ((mwdma_mask << ATA_SHIFT_MWDMA) & ATA_MASK_MWDMA) |
-               ((udma_mask << ATA_SHIFT_UDMA) & ATA_MASK_UDMA);
-
        if (ata_dev->class == ATA_DEV_ATA) {
                if (ata_id_is_cfa(id)) {
                        if (id[162] & 1)
@@ -651,14 +644,11 @@ int scan_sata(int dev)
                        ata_dev->multi_count = ata_dev->id[59] & 0xff;
 
                if (ata_id_has_lba(id)) {
-                       const char *lba_desc;
                        char ncq_desc[20];
 
-                       lba_desc = "LBA";
                        ata_dev->flags |= ATA_DFLAG_LBA;
                        if (ata_id_has_lba48(id)) {
                                ata_dev->flags |= ATA_DFLAG_LBA48;
-                               lba_desc = "LBA48";
 
                                if (ata_dev->n_sectors >= (1UL << 28) &&
                                        ata_id_has_flush_ext(id))
@@ -890,6 +880,7 @@ retry:
        return 0;
 
 err_out:
+       printf("failed to READ ID (%s, err_mask=0x%x)\n", reason, err_mask);
        return rc;
 }
 
@@ -1807,7 +1798,6 @@ static int ata_dev_read_sectors(unsigned char *pdata, unsigned long datalen,
        unsigned int err_mask = 0;
        const char *reason;
        int may_fallback = 1;
-       int rc;
 
        if (dev_state == SATA_ERROR)
                return FALSE;
@@ -1904,19 +1894,10 @@ retry:
                        return -ENOENT;
                }
 
-               rc = -EIO;
                reason = "I/O error";
                goto err_out;
        }
 
-       /* Falling back doesn't make sense if ID data was read
-        * successfully at least once.
-        */
-       may_fallback = 0;
-
-       rc = -EINVAL;
-       reason = "device reports invalid type";
-
        return TRUE;
 
 err_out:
@@ -1991,7 +1972,6 @@ static int ata_dev_write_sectors(unsigned char* pdata, unsigned long datalen,
        unsigned int err_mask = 0;
        const char *reason;
        int may_fallback = 1;
-       int rc;
 
        if (dev_state == SATA_ERROR)
                return FALSE;
@@ -2089,19 +2069,10 @@ retry:
                        return -ENOENT;
                }
 
-               rc = -EIO;
                reason = "I/O error";
                goto err_out;
        }
 
-       /* Falling back doesn't make sense if ID data was read
-        * successfully at least once.
-        */
-       may_fallback = 0;
-
-       rc = -EINVAL;
-       reason = "device reports invalid type";
-
        return TRUE;
 
 err_out: