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Message-ID: <20070410205827.GA19579@beardog.cca.cpqcorp.net>
Date: Tue, 10 Apr 2007 15:58:27 -0500
From: "Mike Miller (OS Dev)" <mikem@...rdog.cca.cpqcorp.net>
To: akpm@...ux-foundation.org, jens.axboe@...cle.com
Cc: linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
steve.cameron@...com
Subject: [PATCH 1/3] cciss: reformat error handling
PATCH 1/3
This patch reformats some error handling code to reduce line lengths a bit. It
accompanies the SG_IO patch which is 2/3 of this set.
Please consider this for inclusion.
Signed-off-by: Stephen M. Cameron <steve.cameron@...com>
Signed-off-by: Mike Miller <mike.miller@...com>
---
linux-2.6.21-rc6/drivers/block/cciss.c | 176 ++++++++++++++++-----------------
1 files changed, 90 insertions(+), 86 deletions(-)
diff -puN linux-2.6.21-rc6/drivers/block/cciss.c~reformat_error_handling linux-2.6.21-rc6/drivers/block/cciss.c
--- cciss_sg_io/linux-2.6.21-rc6/drivers/block/cciss.c~reformat_error_handling 2007-04-10 14:22:46.000000000 -0500
+++ cciss_sg_io-scameron/linux-2.6.21-rc6/drivers/block/cciss.c 2007-04-10 14:31:58.000000000 -0500
@@ -2349,95 +2349,99 @@ static inline void complete_command(ctlr
if (timeout)
status = 0;
- if (cmd->err_info->CommandStatus != 0) { /* an error has occurred */
- switch (cmd->err_info->CommandStatus) {
- unsigned char sense_key;
- case CMD_TARGET_STATUS:
- status = 0;
-
- if (cmd->err_info->ScsiStatus == 0x02) {
- printk(KERN_WARNING "cciss: cmd %p "
- "has CHECK CONDITION "
- " byte 2 = 0x%x\n", cmd,
- cmd->err_info->SenseInfo[2]
- );
- /* check the sense key */
- sense_key = 0xf & cmd->err_info->SenseInfo[2];
- /* no status or recovered error */
- if ((sense_key == 0x0) || (sense_key == 0x1)) {
- status = 1;
- }
- } else {
- printk(KERN_WARNING "cciss: cmd %p "
- "has SCSI Status 0x%x\n",
- cmd, cmd->err_info->ScsiStatus);
+ if (cmd->err_info->CommandStatus == 0) /* no error has occurred */
+ goto after_error_processing;
+
+ switch (cmd->err_info->CommandStatus) {
+ unsigned char sense_key;
+ case CMD_TARGET_STATUS:
+ status = 0;
+
+ if (cmd->err_info->ScsiStatus == 0x02) {
+ printk(KERN_WARNING "cciss: cmd %p "
+ "has CHECK CONDITION "
+ " byte 2 = 0x%x\n", cmd,
+ cmd->err_info->SenseInfo[2]
+ );
+ /* check the sense key */
+ sense_key = 0xf & cmd->err_info->SenseInfo[2];
+ /* no status or recovered error */
+ if ((sense_key == 0x0) || (sense_key == 0x1)) {
+ status = 1;
}
- break;
- case CMD_DATA_UNDERRUN:
- printk(KERN_WARNING "cciss: cmd %p has"
- " completed with data underrun "
- "reported\n", cmd);
- break;
- case CMD_DATA_OVERRUN:
- printk(KERN_WARNING "cciss: cmd %p has"
- " completed with data overrun "
- "reported\n", cmd);
- break;
- case CMD_INVALID:
- printk(KERN_WARNING "cciss: cmd %p is "
- "reported invalid\n", cmd);
- status = 0;
- break;
- case CMD_PROTOCOL_ERR:
- printk(KERN_WARNING "cciss: cmd %p has "
- "protocol error \n", cmd);
- status = 0;
- break;
- case CMD_HARDWARE_ERR:
- printk(KERN_WARNING "cciss: cmd %p had "
- " hardware error\n", cmd);
- status = 0;
- break;
- case CMD_CONNECTION_LOST:
- printk(KERN_WARNING "cciss: cmd %p had "
- "connection lost\n", cmd);
- status = 0;
- break;
- case CMD_ABORTED:
- printk(KERN_WARNING "cciss: cmd %p was "
- "aborted\n", cmd);
- status = 0;
- break;
- case CMD_ABORT_FAILED:
- printk(KERN_WARNING "cciss: cmd %p reports "
- "abort failed\n", cmd);
- status = 0;
- break;
- case CMD_UNSOLICITED_ABORT:
- printk(KERN_WARNING "cciss%d: unsolicited "
- "abort %p\n", h->ctlr, cmd);
- if (cmd->retry_count < MAX_CMD_RETRIES) {
- retry_cmd = 1;
- printk(KERN_WARNING
- "cciss%d: retrying %p\n", h->ctlr, cmd);
- cmd->retry_count++;
- } else
- printk(KERN_WARNING
- "cciss%d: %p retried too "
- "many times\n", h->ctlr, cmd);
- status = 0;
- break;
- case CMD_TIMEOUT:
- printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd);
- status = 0;
- break;
- default:
- printk(KERN_WARNING "cciss: cmd %p returned "
- "unknown status %x\n", cmd,
- cmd->err_info->CommandStatus);
- status = 0;
+ } else {
+ printk(KERN_WARNING "cciss: cmd %p "
+ "has SCSI Status 0x%x\n",
+ cmd, cmd->err_info->ScsiStatus);
}
+ break;
+ case CMD_DATA_UNDERRUN:
+ printk(KERN_WARNING "cciss: cmd %p has"
+ " completed with data underrun "
+ "reported\n", cmd);
+ break;
+ case CMD_DATA_OVERRUN:
+ printk(KERN_WARNING "cciss: cmd %p has"
+ " completed with data overrun "
+ "reported\n", cmd);
+ break;
+ case CMD_INVALID:
+ printk(KERN_WARNING "cciss: cmd %p is "
+ "reported invalid\n", cmd);
+ status = 0;
+ break;
+ case CMD_PROTOCOL_ERR:
+ printk(KERN_WARNING "cciss: cmd %p has "
+ "protocol error \n", cmd);
+ status = 0;
+ break;
+ case CMD_HARDWARE_ERR:
+ printk(KERN_WARNING "cciss: cmd %p had "
+ " hardware error\n", cmd);
+ status = 0;
+ break;
+ case CMD_CONNECTION_LOST:
+ printk(KERN_WARNING "cciss: cmd %p had "
+ "connection lost\n", cmd);
+ status = 0;
+ break;
+ case CMD_ABORTED:
+ printk(KERN_WARNING "cciss: cmd %p was "
+ "aborted\n", cmd);
+ status = 0;
+ break;
+ case CMD_ABORT_FAILED:
+ printk(KERN_WARNING "cciss: cmd %p reports "
+ "abort failed\n", cmd);
+ status = 0;
+ break;
+ case CMD_UNSOLICITED_ABORT:
+ printk(KERN_WARNING "cciss%d: unsolicited "
+ "abort %p\n", h->ctlr, cmd);
+ if (cmd->retry_count < MAX_CMD_RETRIES) {
+ retry_cmd = 1;
+ printk(KERN_WARNING
+ "cciss%d: retrying %p\n", h->ctlr, cmd);
+ cmd->retry_count++;
+ } else
+ printk(KERN_WARNING
+ "cciss%d: %p retried too "
+ "many times\n", h->ctlr, cmd);
+ status = 0;
+ break;
+ case CMD_TIMEOUT:
+ printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd);
+ status = 0;
+ break;
+ default:
+ printk(KERN_WARNING "cciss: cmd %p returned "
+ "unknown status %x\n", cmd,
+ cmd->err_info->CommandStatus);
+ status = 0;
}
+
+after_error_processing:
+
/* We need to return this command */
if (retry_cmd) {
resend_cciss_cmd(h, cmd);
_
-
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