diff options
| author | Ben Hutchings <ben@decadent.org.uk> | 2011-11-16 01:52:11 -0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-03-12 10:33:00 -0700 |
| commit | 9971532b094729a08175715fef295cd41d0f7ea7 (patch) | |
| tree | f6026bfe4e3cd02558afca0f987ec7147a7765db | |
| parent | 531036606ff0b72c5028134df255e4dd19ad6c20 (diff) | |
media: staging: lirc_serial: Free resources on failure paths of lirc_serial_probe()
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>
| -rw-r--r-- | drivers/staging/lirc/lirc_serial.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/staging/lirc/lirc_serial.c b/drivers/staging/lirc/lirc_serial.c index c8a4b7bc587..fa023da6bda 100644 --- a/drivers/staging/lirc/lirc_serial.c +++ b/drivers/staging/lirc/lirc_serial.c @@ -875,11 +875,14 @@ static int __devinit lirc_serial_probe(struct platform_device *dev) ": 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(struct platform_device *dev) 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) |