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authorTejun Heo <htejun@gmail.com>2007-05-11 14:46:51 +0200
committerJeff Garzik <jeff@garzik.org>2007-05-11 18:09:18 -0400
commit8575b814097af648dad284bd3087875a11b13d18 (patch)
tree33ee44f9bafab76229df2516c309f31fd6ef428d /drivers/ata
parent54936f8b099325992f0f212a5e366fd5257c6c9c (diff)
libata: give devices one last chance even if recovery failed with -EINVAL
After certain errors, some devices report complete garbage on IDENTIFY. This can cause ata_dev_read_id() to fail with -EINVAL resulting in immediate disabling of the device. Give the device one last chance after -EINVAL to allow recovery from such situations. As -EINVAL is triggered very rarely, this shouldn't cause any noticeable affect on more common error paths. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Harald Dunkel <harald.dunkel@t-online.de> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/ata')
-rw-r--r--drivers/ata/libata-eh.c6
1 files changed, 1 insertions, 5 deletions
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index ee9bb534153..5309c312f51 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -2003,14 +2003,10 @@ static int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
ehc->tries[dev->devno]--;
switch (rc) {
- case -EINVAL:
- /* eeek, something went very wrong, give up */
- ehc->tries[dev->devno] = 0;
- break;
-
case -ENODEV:
/* device missing or wrong IDENTIFY data, schedule probing */
ehc->i.probe_mask |= (1 << dev->devno);
+ case -EINVAL:
/* give it just one more chance */
ehc->tries[dev->devno] = min(ehc->tries[dev->devno], 1);
case -EIO: