From: Matthew Wilcox Date: Tue, 28 Mar 2006 16:03:44 +0000 (-0500) Subject: [SCSI] Simplify error handling a bit X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ab19d52bec6c1b266228417b58ae6f36f3ea097c;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git [SCSI] Simplify error handling a bit - to_do was never set to SYM_EH_DO_COMPLETE, so remove that code - move the spinlocks inside the common error handler code path Signed-off-by: Matthew Wilcox Signed-off-by: James Bottomley --- diff --git a/drivers/scsi/sym53c8xx_2/sym_glue.c b/drivers/scsi/sym53c8xx_2/sym_glue.c index e6ff89a8524c..052ce11806ad 100644 --- a/drivers/scsi/sym53c8xx_2/sym_glue.c +++ b/drivers/scsi/sym53c8xx_2/sym_glue.c @@ -712,7 +712,6 @@ static void sym53c8xx_timer(unsigned long npref) * What we will do regarding the involved SCSI command. */ #define SYM_EH_DO_IGNORE 0 -#define SYM_EH_DO_COMPLETE 1 #define SYM_EH_DO_WAIT 2 /* @@ -764,25 +763,18 @@ static int sym_eh_handler(int op, char *opname, struct scsi_cmnd *cmd) dev_warn(&cmd->device->sdev_gendev, "%s operation started.\n", opname); + spin_lock_irq(cmd->device->host->host_lock); /* This one is queued in some place -> to wait for completion */ FOR_EACH_QUEUED_ELEMENT(&np->busy_ccbq, qp) { struct sym_ccb *cp = sym_que_entry(qp, struct sym_ccb, link_ccbq); if (cp->cmd == cmd) { to_do = SYM_EH_DO_WAIT; - goto prepare; + break; } } -prepare: - /* Prepare stuff to either ignore, complete or wait for completion */ - switch(to_do) { - default: - case SYM_EH_DO_IGNORE: - break; - case SYM_EH_DO_WAIT: + if (to_do == SYM_EH_DO_WAIT) { init_completion(&ep->done); - /* fall through */ - case SYM_EH_DO_COMPLETE: ep->old_done = cmd->scsi_done; cmd->scsi_done = sym_eh_done; SYM_UCMD_PTR(cmd)->eh_wait = ep; @@ -818,9 +810,6 @@ prepare: } ep->to_do = to_do; - /* Complete the command with locks held as required by the driver */ - if (to_do == SYM_EH_DO_COMPLETE) - sym_xpt_done2(np, cmd, DID_ABORT); /* Wait for completion with locks released, as required by kernel */ if (to_do == SYM_EH_DO_WAIT) { @@ -836,6 +825,7 @@ prepare: if (ep->timed_out) sts = -2; } + spin_unlock_irq(cmd->device->host->host_lock); dev_warn(&cmd->device->sdev_gendev, "%s operation %s.\n", opname, sts==0 ? "complete" :sts==-2 ? "timed-out" : "failed"); return sts ? SCSI_FAILED : SCSI_SUCCESS; @@ -847,46 +837,22 @@ prepare: */ static int sym53c8xx_eh_abort_handler(struct scsi_cmnd *cmd) { - int rc; - - spin_lock_irq(cmd->device->host->host_lock); - rc = sym_eh_handler(SYM_EH_ABORT, "ABORT", cmd); - spin_unlock_irq(cmd->device->host->host_lock); - - return rc; + return sym_eh_handler(SYM_EH_ABORT, "ABORT", cmd); } static int sym53c8xx_eh_device_reset_handler(struct scsi_cmnd *cmd) { - int rc; - - spin_lock_irq(cmd->device->host->host_lock); - rc = sym_eh_handler(SYM_EH_DEVICE_RESET, "DEVICE RESET", cmd); - spin_unlock_irq(cmd->device->host->host_lock); - - return rc; + return sym_eh_handler(SYM_EH_DEVICE_RESET, "DEVICE RESET", cmd); } static int sym53c8xx_eh_bus_reset_handler(struct scsi_cmnd *cmd) { - int rc; - - spin_lock_irq(cmd->device->host->host_lock); - rc = sym_eh_handler(SYM_EH_BUS_RESET, "BUS RESET", cmd); - spin_unlock_irq(cmd->device->host->host_lock); - - return rc; + return sym_eh_handler(SYM_EH_BUS_RESET, "BUS RESET", cmd); } static int sym53c8xx_eh_host_reset_handler(struct scsi_cmnd *cmd) { - int rc; - - spin_lock_irq(cmd->device->host->host_lock); - rc = sym_eh_handler(SYM_EH_HOST_RESET, "HOST RESET", cmd); - spin_unlock_irq(cmd->device->host->host_lock); - - return rc; + return sym_eh_handler(SYM_EH_HOST_RESET, "HOST RESET", cmd); } /*