diff options
Diffstat (limited to 'drivers/media/video/bt8xx/bttv-if.c')
| -rw-r--r-- | drivers/media/video/bt8xx/bttv-if.c | 18 |
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 ecf07988cd3..a6a540dc9e4 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 */ |