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[media] rc: nuvoton-cir: fix potential double free in nvt_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 05:44:29 -03:00 committed by Mauro Carvalho Chehab
parent 408208fbf2
commit f73e1851c3
1 changed files with 1 additions and 0 deletions
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drivers/media/rc/nuvoton-cir.c
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@ -1107,6 +1107,7 @@ static int nvt_probe(struct pnp_dev *pdev, const struct pnp_device_id *dev_id)
release_region(nvt->cir_addr, CIR_IOREG_LENGTH);
exit_unregister_device:
rc_unregister_device(rdev);
rdev = NULL;
exit_free_dev_rdev:
rc_free_device(rdev);
kfree(nvt);