From: Tomas Henzl <thenzl@redhat.com>
Date: Sun, 29 Aug 2010 15:49:09 -0400
Subject: [block] cciss: let scsi error handling work w/interrupts
Message-id: <1283097002-3341-11-git-send-email-thenzl@redhat.com>
Patchwork-id: 27869
O-Subject: [RHEL6 PATCH 10/63] cciss: make scsi error handling routines work
	with interrupts enabled.
Bugzilla: 568830
RH-Acked-by: Neil Horman <nhorman@redhat.com>

make scsi error handling routines work with interrupts enabled.

diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index 8d3fe73..61716b9 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -180,6 +180,9 @@ static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size,
 		   __u8 page_code, unsigned char *scsi3addr, int cmd_type);
 static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size,
 		__u8 page_code, unsigned char scsi3addr[], int cmd_type);
+static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c,
+	int attempt_retry);
+static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c);
 
 static void fail_all_cmds(unsigned long ctlr);
 static void cciss_shutdown(struct pci_dev *);
diff --git a/drivers/block/cciss_scsi.c b/drivers/block/cciss_scsi.c
index 8125c75..cee6baa 100644
--- a/drivers/block/cciss_scsi.c
+++ b/drivers/block/cciss_scsi.c
@@ -50,8 +50,6 @@ static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff,
 	__u8 page_code, unsigned char *scsi3addr,
 	int cmd_type);
 
-static int sendcmd_core(ctlr_info_t *h, CommandList_struct *c);
-
 static CommandList_struct *cmd_alloc(ctlr_info_t *h, int get_from_pool);
 static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool);
 
@@ -1477,11 +1475,10 @@ static int wait_for_device_to_become_ready(ctlr_info_t *h,
 		/* Send the Test Unit Ready */
 		rc = fill_cmd(c, TEST_UNIT_READY, h->ctlr, NULL, 0, 0,
 			lunaddr, TYPE_CMD);
-		if (rc == 0) {
-			rc = sendcmd_core(h, c);
-			/* sendcmd turned off interrupts, turn 'em back on. */
-			h->access.set_intr_mask(h, CCISS_INTR_ON);
-		}
+		if (rc == 0)
+			rc = sendcmd_withirq_core(h, c, 0);
+
+		(void) process_sendcmd_error(h, c);
 
 		if (rc == 0 && c->err_info->CommandStatus == CMD_SUCCESS)
 			break;
@@ -1539,10 +1536,8 @@ static int cciss_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
 		return FAILED;
 	memcpy(lunaddr, &cmd_in_trouble->Header.LUN.LunAddrBytes[0], 8);
 	/* send a reset to the SCSI LUN which the command was sent to */
-	rc = sendcmd(CCISS_RESET_MSG, ctlr, NULL, 0, 0, lunaddr,
+	rc = sendcmd_withirq(CCISS_RESET_MSG, ctlr, NULL, 0, 0, lunaddr,
 		TYPE_MSG);
-	/* sendcmd turned off interrputs on the board, turn 'em back on. */
-	(*c)->access.set_intr_mask(*c, CCISS_INTR_ON);
 	if (rc == 0 && wait_for_device_to_become_ready(*c, lunaddr) == 0)
 		return SUCCESS;
 	printk(KERN_WARNING "cciss%d: resetting device failed.\n", ctlr);
@@ -1553,6 +1548,7 @@ static int  cciss_eh_abort_handler(struct scsi_cmnd *scsicmd)
 {
 	int rc;
 	CommandList_struct *cmd_to_abort;
+	unsigned char lunaddr[8];
 	ctlr_info_t **c;
 	int ctlr;
 
@@ -1567,11 +1563,9 @@ static int  cciss_eh_abort_handler(struct scsi_cmnd *scsicmd)
 	cmd_to_abort = (CommandList_struct *) scsicmd->host_scribble;
 	if (cmd_to_abort == NULL) /* paranoia */
 		return FAILED;
-	rc = sendcmd(CCISS_ABORT_MSG, ctlr, &cmd_to_abort->Header.Tag, 0, 0,
-		(unsigned char *) &cmd_to_abort->Header.LUN.LunAddrBytes[0], 
-		TYPE_MSG);
-	/* sendcmd turned off interrputs on the board, turn 'em back on. */
-	(*c)->access.set_intr_mask(*c, CCISS_INTR_ON);
+	memcpy(lunaddr, &cmd_to_abort->Header.LUN.LunAddrBytes[0], 8);
+	rc = sendcmd_withirq(CCISS_ABORT_MSG, ctlr, &cmd_to_abort->Header.Tag,
+		0, 0, lunaddr, TYPE_MSG);
 	if (rc == 0)
 		return SUCCESS;
 	return FAILED;