diff options
| author | Sergey Shtylyov <s.shtylyov@omprussia.ru> | 2021-03-30 20:45:12 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-22 10:40:26 +0200 |
| commit | a8deef45429daaf34fd2dd7221abf7c4463ef8e4 (patch) | |
| tree | 54b8b700e2b62507fd3869a98e735cffd6d1863c /drivers | |
| parent | 5f1eb035564c32012cc805e3d89e4f066909608f (diff) | |
| download | linux-stable-a8deef45429daaf34fd2dd7221abf7c4463ef8e4.tar.gz linux-stable-a8deef45429daaf34fd2dd7221abf7c4463ef8e4.tar.bz2 linux-stable-a8deef45429daaf34fd2dd7221abf7c4463ef8e4.zip | |
scsi: sni_53c710: Add IRQ check
[ Upstream commit 1160d61bc51e87e509cfaf9da50a0060f67b6de4 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
| -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 b0f5220ae23a..fad68cb028d6 100644 --- a/drivers/scsi/sni_53c710.c +++ b/drivers/scsi/sni_53c710.c @@ -71,6 +71,7 @@ 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) @@ -96,7 +97,9 @@ 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; |