The driver neglects to check the result of platform_get_irq()'s call and
blithely passes the negative error codes to request_irq() (which takes
*unsigned* IRQ #s), causing it to fail with -EINVAL (overridden by -ENODEV
further below). Stop calling request_irq() with the invalid IRQ #s.
Fixes: c27d85f3f3c5 ("[SCSI] SNI RM 53c710 driver")
Signed-off-by: Sergey Shtylyov <s.shtylyov@xxxxxxxxxxxx>
---
Changes in version 3:
- fixed up the patch summary.
Changes in version 2:
- new patch.
drivers/scsi/sni_53c710.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
Index: scsi/drivers/scsi/sni_53c710.c
===================================================================
--- scsi.orig/drivers/scsi/sni_53c710.c
+++ scsi/drivers/scsi/sni_53c710.c
@@ -58,6 +58,7 @@ static int snirm710_probe(struct platfor
struct NCR_700_Host_Parameters *hostdata;
struct Scsi_Host *host;
struct resource *res;
+ int rc;
res = platform_get_resource(dev, IORESOURCE_MEM, 0);
if (!res)
@@ -83,7 +84,9 @@ static int snirm710_probe(struct platfor
goto out_kfree;
host->this_id = 7;
host->base = base;
- host->irq = platform_get_irq(dev, 0);
+ host->irq = rc = platform_get_irq(dev, 0);
+ if (rc < 0)
+ goto out_put_host;
if(request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "snirm710", host)) {
printk(KERN_ERR "snirm710: request_irq failed!\n");
goto out_put_host;
