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Subject[ 57/68] media: staging: lirc_serial: Do not assume error codes returned by request_irq()
3.0-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ben Hutchings <ben@decadent.org.uk>

commit affc9a0d59ac49bd304e2137bd5e4ffdd6fdfa52 upstream.

lirc_serial_probe() must fail if request_irq() returns an error, even if
it isn't EBUSY or EINVAL,

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/staging/lirc/lirc_serial.c | 21 +++++++++------------
1 file changed, 9 insertions(+), 12 deletions(-)

--- a/drivers/staging/lirc/lirc_serial.c
+++ b/drivers/staging/lirc/lirc_serial.c
@@ -843,18 +843,15 @@ static int __devinit lirc_serial_probe(s
result = request_irq(irq, irq_handler,
IRQF_DISABLED | (share_irq ? IRQF_SHARED : 0),
LIRC_DRIVER_NAME, (void *)&hardware);
-
- switch (result) {
- case -EBUSY:
- printk(KERN_ERR LIRC_DRIVER_NAME ": IRQ %d busy\n", irq);
- return -EBUSY;
- case -EINVAL:
- printk(KERN_ERR LIRC_DRIVER_NAME
- ": Bad irq number or handler\n");
- return -EINVAL;
- default:
- break;
- };
+ if (result < 0) {
+ if (result == -EBUSY)
+ printk(KERN_ERR LIRC_DRIVER_NAME ": IRQ %d busy\n",
+ irq);
+ else if (result == -EINVAL)
+ printk(KERN_ERR LIRC_DRIVER_NAME
+ ": Bad irq number or handler\n");
+ return result;
+ }

/* Reserve io region. */
/*



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