diff options
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/cyclades.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c index 353e888295d..9d22d58f429 100644 --- a/drivers/char/cyclades.c +++ b/drivers/char/cyclades.c @@ -1444,6 +1444,10 @@ static irqreturn_t cyy_interrupt(int irq, void *dev_id) card_base_addr = cinfo->base_addr; index = cinfo->bus_index; + /* card was not initialized yet (e.g. DEBUG_SHIRQ) */ + if (unlikely(card_base_addr == NULL)) + return IRQ_HANDLED; + /* This loop checks all chips in the card. Make a note whenever _any_ chip had some work to do, as this is considered an indication that there will be more to do. Only when no chip |