diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/sgiwd93.c | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/drivers/scsi/sgiwd93.c b/drivers/scsi/sgiwd93.c index 50a7bb34d..39a23e09f 100644 --- a/drivers/scsi/sgiwd93.c +++ b/drivers/scsi/sgiwd93.c @@ -281,6 +281,11 @@ int __init sgiwd93_detect(Scsi_Host_Template *SGIblows) sgiwd93_host->irq = SGI_WD93_0_IRQ; buf = (uchar *) get_free_page(GFP_KERNEL); + if (!buf) { + printk(KERN_WARNING "sgiwd93: Could not allocate memory for host0 buffer.\n"); + scsi_unregister(sgiwd93_host); + return 0; + } init_hpc_chain(buf); dma_cache_wback_inv((unsigned long) buf, PAGE_SIZE); /* HPC_SCSI_REG0 | 0x03 | KSEG1 */ @@ -290,9 +295,14 @@ int __init sgiwd93_detect(Scsi_Host_Template *SGIblows) hdata = (struct WD33C93_hostdata *)sgiwd93_host->hostdata; hdata->no_sync = 0; hdata->dma_bounce_buffer = (uchar *) (KSEG1ADDR(buf)); - dma_cache_wback_inv((unsigned long) buf, PAGE_SIZE); - request_irq(SGI_WD93_0_IRQ, sgiwd93_intr, 0, "SGI WD93", (void *) sgiwd93_host); + if (request_irq(SGI_WD93_0_IRQ, sgiwd93_intr, 0, "SGI WD93", (void *) sgiwd93_host)) { + printk(KERN_WARNING "sgiwd93: Could not register IRQ %d (for host 0).\n", sgiwd93_intr); + wd33c93_release(); + free_page(buf); + scsi_unregister(sgiwd93_host); + return 0; + } /* set up second controller on the Indigo2 */ if(!sgi_guiness) { sgiwd93_host1 = scsi_register(SGIblows, sizeof(struct WD33C93_hostdata)); @@ -302,6 +312,12 @@ int __init sgiwd93_detect(Scsi_Host_Template *SGIblows) sgiwd93_host1->irq = SGI_WD93_1_IRQ; buf = (uchar *) get_free_page(GFP_KERNEL); + if (!buf) { + printk(KERN_WARNING "sgiwd93: Could not allocate memory for host1 buffer.\n"); + scsi_unregister(sgiwd93_host1); + called = 1; + return 1; /* We registered host0 so return success*/ + } init_hpc_chain(buf); dma_cache_wback_inv((unsigned long) buf, PAGE_SIZE); /* HPC_SCSI_REG1 | 0x03 | KSEG1 */ @@ -313,7 +329,13 @@ int __init sgiwd93_detect(Scsi_Host_Template *SGIblows) hdata1->dma_bounce_buffer = (uchar *) (KSEG1ADDR(buf)); dma_cache_wback_inv((unsigned long) buf, PAGE_SIZE); - request_irq(SGI_WD93_1_IRQ, sgiwd93_intr, 0, "SGI WD93", (void *) sgiwd93_host1); + if (request_irq(SGI_WD93_1_IRQ, sgiwd93_intr, 0, "SGI WD93", (void *) sgiwd93_host1)) { + printk(KERN_WARNING "sgiwd93: Could not allocate irq %d (for host1).\n", sgiwd93_intr); + wd33c93_release(); + free_page(buf); + scsi_unregister(sgiwd93_host1); + /* Fall through since host0 registered OK */ + } } } |