diff options
| -rw-r--r-- | drivers/scsi/advansys.c | 172 |
1 files changed, 72 insertions, 100 deletions
diff --git a/drivers/scsi/advansys.c b/drivers/scsi/advansys.c index 6d11076bbd02..a407ff34199d 100644 --- a/drivers/scsi/advansys.c +++ b/drivers/scsi/advansys.c @@ -3951,7 +3951,6 @@ static PortAddr _asc_def_iop_base[]; * advansys.h contains function prototypes for functions global to Linux. */ -static irqreturn_t advansys_interrupt(int, void *); static int advansys_slave_configure(struct scsi_device *); static void asc_scsi_done_list(struct scsi_cmnd *); static int asc_execute_scsi_cmnd(struct scsi_cmnd *); @@ -4684,89 +4683,76 @@ static struct scsi_host_template driver_template = { */ static irqreturn_t advansys_interrupt(int irq, void *dev_id) { - ulong flags; - int i; - asc_board_t *boardp; + unsigned long flags; struct scsi_cmnd *done_scp = NULL, *last_scp = NULL; struct scsi_cmnd *new_last_scp; - struct Scsi_Host *shost; + struct Scsi_Host *shost = dev_id; + asc_board_t *boardp = ASC_BOARDP(shost); + irqreturn_t result = IRQ_NONE; - ASC_DBG(1, "advansys_interrupt: begin\n"); + ASC_DBG1(2, "advansys_interrupt: boardp 0x%p\n", boardp); + spin_lock_irqsave(&boardp->lock, flags); + if (ASC_NARROW_BOARD(boardp)) { + /* + * Narrow Board + */ + if (AscIsIntPending(shost->io_port)) { + result = IRQ_HANDLED; + ASC_STATS(shost, interrupt); + ASC_DBG(1, "advansys_interrupt: before AscISR()\n"); + AscISR(&boardp->dvc_var.asc_dvc_var); + } + } else { + /* + * Wide Board + */ + ASC_DBG(1, "advansys_interrupt: before AdvISR()\n"); + if (AdvISR(&boardp->dvc_var.adv_dvc_var)) { + result = IRQ_HANDLED; + ASC_STATS(shost, interrupt); + } + } /* - * Check for interrupts on all boards. - * AscISR() will call asc_isr_callback(). - */ - for (i = 0; i < asc_board_count; i++) { - shost = asc_host[i]; - boardp = ASC_BOARDP(shost); - ASC_DBG2(2, "advansys_interrupt: i %d, boardp 0x%lx\n", - i, (ulong)boardp); - spin_lock_irqsave(&boardp->lock, flags); - if (ASC_NARROW_BOARD(boardp)) { - /* - * Narrow Board - */ - if (AscIsIntPending(shost->io_port)) { - ASC_STATS(shost, interrupt); - ASC_DBG(1, - "advansys_interrupt: before AscISR()\n"); - AscISR(&boardp->dvc_var.asc_dvc_var); - } - } else { - /* - * Wide Board - */ - ASC_DBG(1, "advansys_interrupt: before AdvISR()\n"); - if (AdvISR(&boardp->dvc_var.adv_dvc_var)) { - ASC_STATS(shost, interrupt); - } + * Start waiting requests and create a list of completed requests. + * + * If a reset request is being performed for the board, the reset + * handler will complete pending requests after it has completed. + */ + if ((boardp->flags & ASC_HOST_IN_RESET) == 0) { + ASC_DBG2(1, "advansys_interrupt: done_scp 0x%p, " + "last_scp 0x%p\n", done_scp, last_scp); + + /* Start any waiting commands for the board. */ + if (!ASC_QUEUE_EMPTY(&boardp->waiting)) { + ASC_DBG(1, "advansys_interrupt: before " + "asc_execute_queue()\n"); + asc_execute_queue(&boardp->waiting); } /* - * Start waiting requests and create a list of completed requests. + * Add to the list of requests that must be completed. * - * If a reset request is being performed for the board, the reset - * handler will complete pending requests after it has completed. + * 'done_scp' will always be NULL on the first iteration of + * this loop. 'last_scp' is set at the same time as 'done_scp'. */ - if ((boardp->flags & ASC_HOST_IN_RESET) == 0) { - ASC_DBG2(1, - "advansys_interrupt: done_scp 0x%lx, last_scp 0x%lx\n", - (ulong)done_scp, (ulong)last_scp); - - /* Start any waiting commands for the board. */ - if (!ASC_QUEUE_EMPTY(&boardp->waiting)) { - ASC_DBG(1, - "advansys_interrupt: before asc_execute_queue()\n"); - asc_execute_queue(&boardp->waiting); - } - - /* - * Add to the list of requests that must be completed. - * - * 'done_scp' will always be NULL on the first iteration - * of this loop. 'last_scp' is set at the same time as - * 'done_scp'. - */ - if (done_scp == NULL) { - done_scp = - asc_dequeue_list(&boardp->done, &last_scp, - ASC_TID_ALL); - } else { - ASC_ASSERT(last_scp != NULL); - last_scp->host_scribble = - (unsigned char *)asc_dequeue_list(&boardp-> - done, - &new_last_scp, - ASC_TID_ALL); - if (new_last_scp != NULL) { - ASC_ASSERT(REQPNEXT(last_scp) != NULL); - last_scp = new_last_scp; - } + if (done_scp == NULL) { + done_scp = asc_dequeue_list(&boardp->done, + &last_scp, ASC_TID_ALL); + } else { + ASC_ASSERT(last_scp != NULL); + last_scp->host_scribble = + (unsigned char *)asc_dequeue_list(&boardp-> + done, + &new_last_scp, + ASC_TID_ALL); + if (new_last_scp != NULL) { + ASC_ASSERT(REQPNEXT(last_scp) != NULL); + last_scp = new_last_scp; } } - spin_unlock_irqrestore(&boardp->lock, flags); } + spin_unlock_irqrestore(&boardp->lock, flags); /* * If interrupts were enabled on entry, then they @@ -4778,7 +4764,7 @@ static irqreturn_t advansys_interrupt(int irq, void *dev_id) asc_scsi_done_list(done_scp); ASC_DBG(1, "advansys_interrupt: end\n"); - return IRQ_HANDLED; + return result; } /* @@ -17764,7 +17750,7 @@ advansys_board_found(int iop, struct device *dev, int bus_type) ASC_DVC_VAR *asc_dvc_varp = NULL; ADV_DVC_VAR *adv_dvc_varp = NULL; adv_sgblk_t *sgp = NULL; - int share_irq = FALSE; + int share_irq; int iolen = 0; ADV_PADDR pci_memory_address; int warn_code, err_code; @@ -17918,15 +17904,15 @@ advansys_board_found(int iop, struct device *dev, int bus_type) #ifdef CONFIG_ISA case ASC_IS_ISA: shost->unchecked_isa_dma = TRUE; - share_irq = FALSE; + share_irq = 0; break; case ASC_IS_VL: shost->unchecked_isa_dma = FALSE; - share_irq = FALSE; + share_irq = 0; break; case ASC_IS_EISA: shost->unchecked_isa_dma = FALSE; - share_irq = TRUE; + share_irq = IRQF_SHARED; break; #endif /* CONFIG_ISA */ #ifdef CONFIG_PCI @@ -17937,7 +17923,7 @@ advansys_board_found(int iop, struct device *dev, int bus_type) PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)); shost->unchecked_isa_dma = FALSE; - share_irq = TRUE; + share_irq = IRQF_SHARED; break; #endif /* CONFIG_PCI */ default: @@ -17945,7 +17931,7 @@ advansys_board_found(int iop, struct device *dev, int bus_type) ("advansys_board_found: board %d: unknown adapter type: %d\n", boardp->id, asc_dvc_varp->bus_type); shost->unchecked_isa_dma = TRUE; - share_irq = FALSE; + share_irq = 0; break; } } else { @@ -17961,7 +17947,7 @@ advansys_board_found(int iop, struct device *dev, int bus_type) PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)); shost->unchecked_isa_dma = FALSE; - share_irq = TRUE; + share_irq = IRQF_SHARED; #endif /* CONFIG_PCI */ } @@ -18425,25 +18411,11 @@ advansys_board_found(int iop, struct device *dev, int bus_type) /* Register IRQ Number. */ ASC_DBG1(2, "advansys_board_found: request_irq() %d\n", shost->irq); - /* - * If request_irq() fails with the IRQF_DISABLED flag set, - * then try again without the IRQF_DISABLED flag set. This - * allows IRQ sharing to work even with other drivers that - * do not set the IRQF_DISABLED flag. - * - * If IRQF_DISABLED is not set, then interrupts are enabled - * before the driver interrupt function is called. - */ - if (((ret = request_irq(shost->irq, advansys_interrupt, - IRQF_DISABLED | (share_irq == - TRUE ? - IRQF_SHARED : - 0), "advansys", boardp)) != 0) - && - ((ret = - request_irq(shost->irq, advansys_interrupt, - (share_irq == TRUE ? IRQF_SHARED : 0), - "advansys", boardp)) != 0)) { + + ret = request_irq(shost->irq, advansys_interrupt, share_irq, + "advansys", shost); + + if (ret) { if (ret == -EBUSY) { ASC_PRINT2 ("advansys_board_found: board %d: request_irq(): IRQ 0x%x already in use.\n", @@ -18644,7 +18616,7 @@ advansys_board_found(int iop, struct device *dev, int bus_type) #ifdef CONFIG_PROC_FS kfree(boardp->prtbuf); #endif /* CONFIG_PROC_FS */ - free_irq(shost->irq, boardp); + free_irq(shost->irq, shost); scsi_unregister(shost); asc_board_count--; return NULL; @@ -18960,7 +18932,7 @@ static int advansys_release(struct Scsi_Host *shost) ASC_DBG(1, "advansys_release: begin\n"); boardp = ASC_BOARDP(shost); - free_irq(shost->irq, boardp); + free_irq(shost->irq, shost); if (shost->dma_channel != NO_ISA_DMA) { ASC_DBG(1, "advansys_release: free_dma()\n"); free_dma(shost->dma_channel); |