aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorTejun Heo <htejun@gmail.com>2007-02-02 15:29:27 +0900
committerJeff Garzik <jeff@garzik.org>2007-02-09 17:39:38 -0500
commit34fee227dd13af593be599b19683464ac4dd4c8b (patch)
tree2c246bdc4e573fef2df2c67b83d6b3f43c63503e
parent3f64f565bebbb4a1a4e9ccce5565c9f86458ddb1 (diff)
downloadlinux-2.6.34-ux500-34fee227dd13af593be599b19683464ac4dd4c8b.tar.gz
libata: add 150ms between completion of hardreset and status checking
Follow the old SRST rule and delay 150ms between completion of hardreset and status checking. Debouncing delay should usually cover this but debounce duration could be shorter than 150ms under certain circumstances. Usefulness depends on host controller implementation but it can't hurt and serves as a reminder that 2s delay for GoVault should also be added here. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
-rw-r--r--drivers/ata/libata-core.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 5c2e581bf99..6a2083a6d17 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -3023,6 +3023,9 @@ int sata_std_hardreset(struct ata_port *ap, unsigned int *class)
return 0;
}
+ /* wait a while before checking status, see SRST for more info */
+ msleep(150);
+
if (ata_busy_sleep(ap, ATA_TMOUT_BOOT_QUICK, ATA_TMOUT_BOOT)) {
ata_port_printk(ap, KERN_ERR,
"COMRESET failed (device not ready)\n");