diff options
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/libata-core.c | 32 |
1 files changed, 21 insertions, 11 deletions
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c index d4fb0f754c9..99f4bf6022e 100644 --- a/drivers/scsi/libata-core.c +++ b/drivers/scsi/libata-core.c @@ -2277,6 +2277,24 @@ err_out: DPRINTK("EXIT\n"); } +static int sata_phy_resume(struct ata_port *ap) +{ + unsigned long timeout = jiffies + (HZ * 5); + u32 sstatus; + + scr_write_flush(ap, SCR_CONTROL, 0x300); + + /* Wait for phy to become ready, if necessary. */ + do { + msleep(200); + sstatus = scr_read(ap, SCR_STATUS); + if ((sstatus & 0xf) != 1) + return 0; + } while (time_before(jiffies, timeout)); + + return -1; +} + /** * ata_std_softreset - reset host port via ATA SRST * @ap: port to reset @@ -2357,8 +2375,7 @@ int ata_std_softreset(struct ata_port *ap, int verbose, unsigned int *classes) */ int sata_std_hardreset(struct ata_port *ap, int verbose, unsigned int *class) { - u32 sstatus, serror; - unsigned long timeout = jiffies + (HZ * 5); + u32 serror; DPRINTK("ENTER\n"); @@ -2371,15 +2388,8 @@ int sata_std_hardreset(struct ata_port *ap, int verbose, unsigned int *class) */ msleep(1); - scr_write_flush(ap, SCR_CONTROL, 0x300); - - /* Wait for phy to become ready, if necessary. */ - do { - msleep(200); - sstatus = scr_read(ap, SCR_STATUS); - if ((sstatus & 0xf) != 1) - break; - } while (time_before(jiffies, timeout)); + /* Bring phy back */ + sata_phy_resume(ap); /* Clear SError */ serror = scr_read(ap, SCR_ERROR); |