diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ata/libata-core.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 89fd0e9ed74..fd332612d64 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -3373,14 +3373,20 @@ void ata_wait_after_reset(struct ata_port *ap, unsigned long deadline) * to clear 0xff after reset. For example, HHD424020F7SV00 * iVDR needs >= 800ms while. Quantum GoVault needs even more * than that. + * + * Note that some PATA controllers (pata_ali) explode if + * status register is read more than once when there's no + * device attached. */ - while (1) { - u8 status = ata_chk_status(ap); + if (ap->flags & ATA_FLAG_SATA) { + while (1) { + u8 status = ata_chk_status(ap); - if (status != 0xff || time_after(jiffies, deadline)) - return; + if (status != 0xff || time_after(jiffies, deadline)) + return; - msleep(50); + msleep(50); + } } } |