diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/block/cciss.c | 77 | ||||
| -rw-r--r-- | drivers/block/cciss.h | 1 |
2 files changed, 46 insertions, 32 deletions
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index 2d128831d3c..70017071106 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -2292,26 +2292,12 @@ static int check_target_status(ctlr_info_t *h, CommandList_struct *c) return IO_ERROR; } -static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c) +static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c) { - DECLARE_COMPLETION_ONSTACK(wait); - u64bit buff_dma_handle; - unsigned long flags; int return_status = IO_OK; -resend_cmd2: - c->waiting = &wait; - /* Put the request on the tail of the queue and send it */ - spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); - addQ(&h->reqQ, c); - h->Qdepth++; - start_io(h); - spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); - - wait_for_completion(&wait); - - if (c->err_info->CommandStatus == 0) - goto command_done; + if (c->err_info->CommandStatus == CMD_SUCCESS) + return IO_OK; switch (c->err_info->CommandStatus) { case CMD_TARGET_STATUS: @@ -2322,7 +2308,7 @@ resend_cmd2: /* expected for inquiry and report lun commands */ break; case CMD_INVALID: - printk(KERN_WARNING "cciss: Cmd 0x%02x is " + printk(KERN_WARNING "cciss: cmd 0x%02x is " "reported invalid\n", c->Request.CDB[0]); return_status = IO_ERROR; break; @@ -2355,19 +2341,7 @@ resend_cmd2: printk(KERN_WARNING "cciss%d: unsolicited abort 0x%02x\n", h->ctlr, c->Request.CDB[0]); - if (c->retry_count < MAX_CMD_RETRIES) { - printk(KERN_WARNING - "cciss%d: retrying 0x%02x\n", h->ctlr, - c->Request.CDB[0]); - c->retry_count++; - /* erase the old error information */ - memset(c->err_info, 0, - sizeof(ErrorInfo_struct)); - return_status = IO_OK; - INIT_COMPLETION(wait); - goto resend_cmd2; - } - return_status = IO_ERROR; + return_status = IO_NEEDS_RETRY; break; default: printk(KERN_WARNING "cciss: cmd 0x%02x returned " @@ -2375,6 +2349,44 @@ resend_cmd2: c->err_info->CommandStatus); return_status = IO_ERROR; } + return return_status; +} + +static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, + int attempt_retry) +{ + DECLARE_COMPLETION_ONSTACK(wait); + u64bit buff_dma_handle; + unsigned long flags; + int return_status = IO_OK; + +resend_cmd2: + c->waiting = &wait; + /* Put the request on the tail of the queue and send it */ + spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); + addQ(&h->reqQ, c); + h->Qdepth++; + start_io(h); + spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); + + wait_for_completion(&wait); + + if (c->err_info->CommandStatus == 0 || !attempt_retry) + goto command_done; + + return_status = process_sendcmd_error(h, c); + + if (return_status == IO_NEEDS_RETRY && + c->retry_count < MAX_CMD_RETRIES) { + printk(KERN_WARNING "cciss%d: retrying 0x%02x\n", h->ctlr, + c->Request.CDB[0]); + c->retry_count++; + /* erase the old error information */ + memset(c->err_info, 0, sizeof(ErrorInfo_struct)); + return_status = IO_OK; + INIT_COMPLETION(wait); + goto resend_cmd2; + } command_done: /* unlock the buffers from DMA */ @@ -2399,7 +2411,8 @@ static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, return_status = fill_cmd(c, cmd, ctlr, buff, size, page_code, scsi3addr, cmd_type); if (return_status == IO_OK) - return_status = sendcmd_withirq_core(h, c); + return_status = sendcmd_withirq_core(h, c, 1); + cmd_free(h, c, 0); return return_status; } diff --git a/drivers/block/cciss.h b/drivers/block/cciss.h index dd1926d8cd9..25cd58e2502 100644 --- a/drivers/block/cciss.h +++ b/drivers/block/cciss.h @@ -11,6 +11,7 @@ #define IO_OK 0 #define IO_ERROR 1 +#define IO_NEEDS_RETRY 3 #define VENDOR_LEN 8 #define MODEL_LEN 16 |