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Bluetooth: Redo checks in IRQ handler for shared IRQ support

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Commit ac019360fe changed the irq handler logic to BUG_ON rather than
returning IRQ_NONE when the incoming argument is invalid.  While this
works in most cases, it doesn't work when the IRQ is shared with other
devices (or when DEBUG_SHIRQ is enabled).

So revert the previous change and replace the warning message with a
comment explaining that we want this behavior.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Mike Frysinger 2009-09-14 13:43:49 -04:00 committed by Marcel Holtmann
parent e420aba331
commit 7427847d2d
4 changed files with 12 additions and 4 deletions
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4
drivers/bluetooth/bluecard_cs.c
View file

@ -503,7 +503,9 @@ static irqreturn_t bluecard_interrupt(int irq, void *dev_inst)
unsigned int iobase;
unsigned char reg;
BUG_ON(!info->hdev);
if (!info || !info->hdev)
/* our irq handler is shared */
return IRQ_NONE;
if (!test_bit(CARD_READY, &(info->hw_state)))
return IRQ_HANDLED;

4
drivers/bluetooth/bt3c_cs.c
View file

@ -345,7 +345,9 @@ static irqreturn_t bt3c_interrupt(int irq, void *dev_inst)
int iir;
irqreturn_t r = IRQ_NONE;
BUG_ON(!info->hdev);
if (!info || !info->hdev)
/* our irq handler is shared */
return IRQ_NONE;
iobase = info->p_dev->io.BasePort1;

4
drivers/bluetooth/btuart_cs.c
View file

@ -295,7 +295,9 @@ static irqreturn_t btuart_interrupt(int irq, void *dev_inst)
int iir, lsr;
irqreturn_t r = IRQ_NONE;
BUG_ON(!info->hdev);
if (!info || !info->hdev)
/* our irq handler is shared */
return IRQ_NONE;
iobase = info->p_dev->io.BasePort1;

4
drivers/bluetooth/dtl1_cs.c
View file

@ -299,7 +299,9 @@ static irqreturn_t dtl1_interrupt(int irq, void *dev_inst)
int iir, lsr;
irqreturn_t r = IRQ_NONE;
BUG_ON(!info->hdev);
if (!info || !info->hdev)
/* our irq handler is shared */
return IRQ_NONE;
iobase = info->p_dev->io.BasePort1;