Commit f1e83c6c authored by Jiri Slaby's avatar Jiri Slaby Committed by Linus Torvalds

Char: cyclades, allow DEBUG_SHIRQ

Test if base addr is non-null in ISR to prove the card has been correctly
initialized.  This is needed for DEBUG_SHIRQ for example.
Signed-off-by: 's avatarJiri Slaby <jirislaby@gmail.com>
Signed-off-by: 's avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: 's avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 85c93fa9
......@@ -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
......
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