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| author | Andrew Vasquez <andrew.vasquez@qlogic.com> | 2009-01-22 09:45:31 -0800 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2009-01-25 07:56:52 -0600 |
| commit | 8eca3f39c4b11320787f7b216f63214aee8415a9 (patch) | |
| tree | 10eeba2d46c10cb3744adb6360662aabbc9cedcf /drivers | |
| parent | 09ff36d30c27ee23b50ffb419c80a0aaef1db4a0 (diff) | |
| download | linux-8eca3f39c4b11320787f7b216f63214aee8415a9.tar.gz linux-8eca3f39c4b11320787f7b216f63214aee8415a9.tar.bz2 linux-8eca3f39c4b11320787f7b216f63214aee8415a9.zip | |
[SCSI] qla2xxx: Always serialize mailbox command execution.
Original code would incorrectly bypass serialization if the DPC
thread were performing a big-hammer operation (ISP abort). This
short circuit, though rare, would subsequently stomp on a
secondary thread's mailbox command execution. Found during
ISP81XX testing.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_mbx.c | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c index db4df45234a5..f94ffbb98e95 100644 --- a/drivers/scsi/qla2xxx/qla_mbx.c +++ b/drivers/scsi/qla2xxx/qla_mbx.c @@ -58,14 +58,11 @@ qla2x00_mailbox_command(scsi_qla_host_t *vha, mbx_cmd_t *mcp) * seconds. This is to serialize actual issuing of mailbox cmds during * non ISP abort time. */ - if (!abort_active) { - if (!wait_for_completion_timeout(&ha->mbx_cmd_comp, - mcp->tov * HZ)) { - /* Timeout occurred. Return error. */ - DEBUG2_3_11(printk("%s(%ld): cmd access timeout. " - "Exiting.\n", __func__, base_vha->host_no)); - return QLA_FUNCTION_TIMEOUT; - } + if (!wait_for_completion_timeout(&ha->mbx_cmd_comp, mcp->tov * HZ)) { + /* Timeout occurred. Return error. */ + DEBUG2_3_11(printk("%s(%ld): cmd access timeout. " + "Exiting.\n", __func__, base_vha->host_no)); + return QLA_FUNCTION_TIMEOUT; } ha->flags.mbox_busy = 1; @@ -265,8 +262,7 @@ qla2x00_mailbox_command(scsi_qla_host_t *vha, mbx_cmd_t *mcp) } /* Allow next mbx cmd to come in. */ - if (!abort_active) - complete(&ha->mbx_cmd_comp); + complete(&ha->mbx_cmd_comp); if (rval) { DEBUG2_3_11(printk("%s(%ld): **** FAILED. mbx0=%x, mbx1=%x, " |