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| author | Sergey Shtylyov <s.shtylyov@omprussia.ru> | 2021-03-30 20:45:12 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-04-13 00:20:48 -0400 |
| commit | 1160d61bc51e87e509cfaf9da50a0060f67b6de4 (patch) | |
| tree | b05cd707c87c58b3b3848cf0fc200a7773f655b1 | |
| parent | 14b321380eb333c82853d7d612d0995f05f88fdc (diff) | |
| download | linux-1160d61bc51e87e509cfaf9da50a0060f67b6de4.tar.gz linux-1160d61bc51e87e509cfaf9da50a0060f67b6de4.tar.bz2 linux-1160d61bc51e87e509cfaf9da50a0060f67b6de4.zip | |
scsi: sni_53c710: Add IRQ check
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.
Link: https://lore.kernel.org/r/8f4b8fa5-8251-b977-70a1-9099bcb4bb17@omprussia.ru
Fixes: c27d85f3f3c5 ("[SCSI] SNI RM 53c710 driver")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| -rw-r--r-- | drivers/scsi/sni_53c710.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/scsi/sni_53c710.c b/drivers/scsi/sni_53c710.c index 9e2e196bc202..97c6f81b1d2a 100644 --- a/drivers/scsi/sni_53c710.c +++ b/drivers/scsi/sni_53c710.c @@ -58,6 +58,7 @@ static int snirm710_probe(struct platform_device *dev) 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 platform_device *dev) 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; |