diff options
Diffstat (limited to 'drivers/media/pci/b2c2/flexcop-pci.c')
| -rw-r--r-- | drivers/media/pci/b2c2/flexcop-pci.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/media/pci/b2c2/flexcop-pci.c b/drivers/media/pci/b2c2/flexcop-pci.c index cc6527e35537..b7d8e34ffd5d 100644 --- a/drivers/media/pci/b2c2/flexcop-pci.c +++ b/drivers/media/pci/b2c2/flexcop-pci.c @@ -184,6 +184,8 @@ static irqreturn_t flexcop_pci_isr(int irq, void *dev_id) dma_addr_t cur_addr = fc->read_ibi_reg(fc,dma1_008).dma_0x8.dma_cur_addr << 2; u32 cur_pos = cur_addr - fc_pci->dma[0].dma_addr0; + if (cur_pos > fc_pci->dma[0].size * 2) + goto error; deb_irq("%u irq: %08x cur_addr: %llx: cur_pos: %08x, last_cur_pos: %08x ", jiffies_to_usecs(jiffies - fc_pci->last_irq), @@ -224,6 +226,7 @@ static irqreturn_t flexcop_pci_isr(int irq, void *dev_id) ret = IRQ_NONE; } +error: spin_unlock_irqrestore(&fc_pci->irq_lock, flags); return ret; } |