| From c8e57e1b766c2321aa76ee5e6878c69bd2313d62 Mon Sep 17 00:00:00 2001 |
| From: Ben Hutchings <ben@decadent.org.uk> |
| Date: Wed, 16 Nov 2011 01:52:11 -0300 |
| Subject: media: staging: lirc_serial: Free resources on failure paths of lirc_serial_probe() |
| |
| From: Ben Hutchings <ben@decadent.org.uk> |
| |
| commit c8e57e1b766c2321aa76ee5e6878c69bd2313d62 upstream. |
| |
| Failure to allocate the I/O region leaves the IRQ allocated. |
| A later failure leaves them both allocated. |
| |
| Reported-by: Torsten Crass <torsten.crass@eBiology.de> |
| 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/media/lirc/lirc_serial.c | 19 ++++++++++++++++--- |
| 1 file changed, 16 insertions(+), 3 deletions(-) |
| |
| --- a/drivers/staging/media/lirc/lirc_serial.c |
| +++ b/drivers/staging/media/lirc/lirc_serial.c |
| @@ -875,11 +875,14 @@ static int __devinit lirc_serial_probe(s |
| ": or compile the serial port driver as module and\n"); |
| printk(KERN_WARNING LIRC_DRIVER_NAME |
| ": make sure this module is loaded first\n"); |
| - return -EBUSY; |
| + result = -EBUSY; |
| + goto exit_free_irq; |
| } |
| |
| - if (hardware_init_port() < 0) |
| - return -EINVAL; |
| + if (hardware_init_port() < 0) { |
| + result = -EINVAL; |
| + goto exit_release_region; |
| + } |
| |
| /* Initialize pulse/space widths */ |
| init_timing_params(duty_cycle, freq); |
| @@ -911,6 +914,16 @@ static int __devinit lirc_serial_probe(s |
| |
| dprintk("Interrupt %d, port %04x obtained\n", irq, io); |
| return 0; |
| + |
| +exit_release_region: |
| + if (iommap != 0) |
| + release_mem_region(iommap, 8 << ioshift); |
| + else |
| + release_region(io, 8); |
| +exit_free_irq: |
| + free_irq(irq, (void *)&hardware); |
| + |
| + return result; |
| } |
| |
| static int __devexit lirc_serial_remove(struct platform_device *dev) |