[media] rc: Fix invalid free_region and/or free_irq on probe failure
fintek-cir, ite-cir and nuvoton-cir may try to free an I/O region
and/or IRQ handler that was never allocated after a failure in their
respective probe functions. Add and use separate labels on the
failure path so they will do the right cleanup after each possible
point of failure.
Compile-tested only.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/rc/ite-cir.c b/drivers/media/rc/ite-cir.c
index 0e49c99..36fe5a3 100644
--- a/drivers/media/rc/ite-cir.c
+++ b/drivers/media/rc/ite-cir.c
@@ -1598,24 +1598,22 @@
if (request_irq(itdev->cir_irq, ite_cir_isr, IRQF_SHARED,
ITE_DRIVER_NAME, (void *)itdev))
- goto failure;
+ goto failure2;
ret = rc_register_device(rdev);
if (ret)
- goto failure;
+ goto failure3;
itdev->rdev = rdev;
ite_pr(KERN_NOTICE, "driver has been successfully loaded\n");
return 0;
+failure3:
+ free_irq(itdev->cir_irq, itdev);
+failure2:
+ release_region(itdev->cir_addr, itdev->params.io_region_size);
failure:
- if (itdev->cir_irq)
- free_irq(itdev->cir_irq, itdev);
-
- if (itdev->cir_addr)
- release_region(itdev->cir_addr, itdev->params.io_region_size);
-
rc_free_device(rdev);
kfree(itdev);