From c58c21c7a2ef7d1eb45231d5c1bb24d88a9666b8 Mon Sep 17 00:00:00 2001 From: "nshmyrev@yandex.ru" Date: Tue, 8 Nov 2005 21:37:41 -0800 Subject: [PATCH] [PATCH] v4l: 797: more intellect on clearing in bits on irq lock - More intellect on clearing in bits on irq lock. Signed-off-by: Nickolay V. Shmyrev <> Signed-off-by: Nickolay V. Shmyrev Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/media/video/bttv-driver.c | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) diff --git a/drivers/media/video/bttv-driver.c b/drivers/media/video/bttv-driver.c index 504d717b115..058b923b4b1 100644 --- a/drivers/media/video/bttv-driver.c +++ b/drivers/media/video/bttv-driver.c @@ -3736,10 +3736,22 @@ static irqreturn_t bttv_irq(int irq, void *dev_id, struct pt_regs * regs) count++; if (count > 4) { - btwrite(0, BT848_INT_MASK); - printk(KERN_ERR - "bttv%d: IRQ lockup, cleared int mask [", btv->c.nr); + + if (count > 8 || !(astat & BT848_INT_GPINT)) { + btwrite(0, BT848_INT_MASK); + + printk(KERN_ERR + "bttv%d: IRQ lockup, cleared int mask [", btv->c.nr); + } else { + printk(KERN_ERR + "bttv%d: IRQ lockup, clearing GPINT from int mask [", btv->c.nr); + + btwrite(btread(BT848_INT_MASK) & (-1 ^ BT848_INT_GPINT), + BT848_INT_MASK); + }; + bttv_print_irqbits(stat,astat); + printk("]\n"); } } -- 2.20.1