diff options
author | andrew.vasquez@qlogic.com <andrew.vasquez@qlogic.com> | 2006-01-13 20:05:10 -0500 |
---|---|---|
committer | James Bottomley <jejb@mulgrave.(none)> | 2006-01-14 11:55:28 -0500 |
commit | 5998983113c1c9158c1ce66ff26a212aceaf7e5c (patch) | |
tree | 7b050a3851d3869eaf21c57042619161ac851a49 /drivers/scsi/qla2xxx | |
parent | 03ab2eabed74708c0c74163723007e8e72244219 (diff) |
[SCSI] qla2xxx: Correct excessive delay during LOAD-RISC-RAM mailbox command.
Problem report (against 2.4.x driver) from Jeff Layton
<jlayton@redhat.com>:
An OEM noticed that the U6 qla2200 driver would hang for
around 2 minutes at boot time and then proceed normally. I
found that the delay was occurring when loading the new
firmware into the card, and was due to a
schedule_timeout(10) added to the bottom of the polling
loop.
Some testing showed that the load ram operation on the card
was very quick (on the order of a couple of jiffies), but
the sleep in the polling loop was making each operation take
around 25-30.
The attached patch corrects this by making it skip sleeping
during the load ram operation, since I believe we only do
that when the module is plugged in. It also skips sleeping
if the mbox_int flag got set during the current loop.
This corrected the hang on my test setup, and OEM also
confirmed that it corrected the problem for them.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/qla2xxx')
-rw-r--r-- | drivers/scsi/qla2xxx/qla_mbx.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c index f90e68de0a86..3de8fee69fa4 100644 --- a/drivers/scsi/qla2xxx/qla_mbx.c +++ b/drivers/scsi/qla2xxx/qla_mbx.c | |||
@@ -196,7 +196,9 @@ qla2x00_mailbox_command(scsi_qla_host_t *ha, mbx_cmd_t *mcp) | |||
196 | /* Check for pending interrupts. */ | 196 | /* Check for pending interrupts. */ |
197 | qla2x00_poll(ha); | 197 | qla2x00_poll(ha); |
198 | 198 | ||
199 | msleep(10); | 199 | if (command != MBC_LOAD_RISC_RAM_EXTENDED && |
200 | !ha->flags.mbox_int) | ||
201 | msleep(10); | ||
200 | } /* while */ | 202 | } /* while */ |
201 | } | 203 | } |
202 | 204 | ||