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Commit f1e83c6c authored by Jiri Slaby's avatar Jiri Slaby Committed by Linus Torvalds
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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: default avatarJiri Slaby <jirislaby@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 85c93fa9

drivers/char/cyclades.c

+4 −0
Original line number Diff line number Diff line
@@ -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