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: Jiri Slaby <[email protected]>
---
commit 71c2e9b72594f69e4e226006206ffa74b55c1642
tree 0134ea3532474f2c7bc2deabcf453b83f0747e5f
parent 73621a789a0482299242ea61c971af6b5f8b828a
author Jiri Slaby <[email protected]> Wed, 18 Apr 2007 11:59:22 +0200
committer Jiri Slaby <[email protected]> Wed, 18 Apr 2007 11:59:22 +0200
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 5a9e7d6..5d6559e 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
-
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