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| author | Sergey Vlasov <vsu@altlinux.ru> | 2006-04-07 10:04:56 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2006-05-12 19:54:41 -0300 |
| commit | 7a766f9ddd74b50d6069f054a3004ece0439f5c1 (patch) | |
| tree | db88a76df1cf9dade1804bba8f1175a6556939e5 | |
| parent | a7286033f951ebc78527e63f335516ea2f95e142 (diff) | |
| download | blackbird-op-linux-7a766f9ddd74b50d6069f054a3004ece0439f5c1.tar.gz blackbird-op-linux-7a766f9ddd74b50d6069f054a3004ece0439f5c1.zip | |
V4L/DVB (3738): Saa7134: Fix oops with disable_ir=1
When disable_ir=1 parameter is used, or when saa7134_input_init1()
fails for any other reason, dev->remote will remain NULL, and the
driver will oops in saa7134_hwinit2(). Therefore dev->remote must be
checked before dereferencing.
Signed-off-by: Sergey Vlasov <vsu@altlinux.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| -rw-r--r-- | drivers/media/video/saa7134/saa7134-core.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/media/video/saa7134/saa7134-core.c b/drivers/media/video/saa7134/saa7134-core.c index 13de05532e0a..f0c2111f14ad 100644 --- a/drivers/media/video/saa7134/saa7134-core.c +++ b/drivers/media/video/saa7134/saa7134-core.c @@ -548,6 +548,8 @@ static irqreturn_t saa7134_irq(int irq, void *dev_id, struct pt_regs *regs) if (report & SAA7134_IRQ_REPORT_GPIO16) { switch (dev->has_remote) { case SAA7134_REMOTE_GPIO: + if (!dev->remote) + break; if (dev->remote->mask_keydown & 0x10000) { saa7134_input_irq(dev); } @@ -564,6 +566,8 @@ static irqreturn_t saa7134_irq(int irq, void *dev_id, struct pt_regs *regs) if (report & SAA7134_IRQ_REPORT_GPIO18) { switch (dev->has_remote) { case SAA7134_REMOTE_GPIO: + if (!dev->remote) + break; if ((dev->remote->mask_keydown & 0x40000) || (dev->remote->mask_keyup & 0x40000)) { saa7134_input_irq(dev); @@ -676,7 +680,7 @@ static int saa7134_hwinit2(struct saa7134_dev *dev) SAA7134_IRQ2_INTE_PE | SAA7134_IRQ2_INTE_AR; - if (dev->has_remote == SAA7134_REMOTE_GPIO) { + if (dev->has_remote == SAA7134_REMOTE_GPIO && dev->remote) { if (dev->remote->mask_keydown & 0x10000) irq2_mask |= SAA7134_IRQ2_INTE_GPIO16; else if (dev->remote->mask_keydown & 0x40000) |
