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[media] rc: winbond-cir: fix potential double free in wbcir_probe()

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Since rc_unregister_device() frees its argument, the subsequently
call to rc_free_device() on the same variable will cause a double
free bug. Fix by set argument to NULL, thus when fall through to
rc_free_device(), nothing will be done there.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Wei Yongjun 2013-04-09 05:43:33 -03:00 committed by Mauro Carvalho Chehab
parent 4290fd1a56
commit 4ec16da733
1 changed files with 1 additions and 0 deletions
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drivers/media/rc/winbond-cir.c
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@ -1151,6 +1151,7 @@ wbcir_probe(struct pnp_dev *device, const struct pnp_device_id *dev_id)
release_region(data->wbase, WAKEUP_IOMEM_LEN);
exit_unregister_device:
rc_unregister_device(data->dev);
data->dev = NULL;
exit_free_rc:
rc_free_device(data->dev);
exit_unregister_led: