diff options
| -rw-r--r-- | drivers/media/platform/allegro-dvt/allegro-core.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/media/platform/allegro-dvt/allegro-core.c b/drivers/media/platform/allegro-dvt/allegro-core.c index 887b492e4ad1..14a119b43bca 100644 --- a/drivers/media/platform/allegro-dvt/allegro-core.c +++ b/drivers/media/platform/allegro-dvt/allegro-core.c @@ -2185,6 +2185,15 @@ static irqreturn_t allegro_irq_thread(int irq, void *data) { struct allegro_dev *dev = data; + /* + * The firmware is initialized after the mailbox is setup. We further + * check the AL5_ITC_CPU_IRQ_STA register, if the firmware actually + * triggered the interrupt. Although this should not happen, make sure + * that we ignore interrupts, if the mailbox is not initialized. + */ + if (!dev->mbox_status) + return IRQ_NONE; + allegro_mbox_notify(dev->mbox_status); return IRQ_HANDLED; |