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path: root/drivers/media/video/bt8xx/bttv-if.c
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Diffstat (limited to 'drivers/media/video/bt8xx/bttv-if.c')
-rw-r--r--drivers/media/video/bt8xx/bttv-if.c18
1 files changed, 14 insertions, 4 deletions
diff --git a/drivers/media/video/bt8xx/bttv-if.c b/drivers/media/video/bt8xx/bttv-if.c
index ecf07988cd33..a6a540dc9e4b 100644
--- a/drivers/media/video/bt8xx/bttv-if.c
+++ b/drivers/media/video/bt8xx/bttv-if.c
@@ -47,7 +47,10 @@ struct pci_dev* bttv_get_pcidev(unsigned int card)
{
if (card >= bttv_num)
return NULL;
- return bttvs[card].c.pci;
+ if (!bttvs[card])
+ return NULL;
+
+ return bttvs[card]->c.pci;
}
@@ -59,7 +62,10 @@ int bttv_gpio_enable(unsigned int card, unsigned long mask, unsigned long data)
return -EINVAL;
}
- btv = &bttvs[card];
+ btv = bttvs[card];
+ if (!btv)
+ return -ENODEV;
+
gpio_inout(mask,data);
if (bttv_gpio)
bttv_gpio_tracking(btv,"extern enable");
@@ -74,7 +80,9 @@ int bttv_read_gpio(unsigned int card, unsigned long *data)
return -EINVAL;
}
- btv = &bttvs[card];
+ btv = bttvs[card];
+ if (!btv)
+ return -ENODEV;
if(btv->shutdown) {
return -ENODEV;
@@ -94,7 +102,9 @@ int bttv_write_gpio(unsigned int card, unsigned long mask, unsigned long data)
return -EINVAL;
}
- btv = &bttvs[card];
+ btv = bttvs[card];
+ if (!btv)
+ return -ENODEV;
/* prior setting BT848_GPIO_REG_INP is (probably) not needed
because direct input is set on init */