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;