From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dan Carpenter Date: Sun, 02 Dec 2012 10:43:13 +0000 Subject: [patch] [media] mantis: cleanup NULL checking in mantis_ca_exit() Message-Id: <20121202104313.GC16078@elgon.mountain> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Mauro Carvalho Chehab Cc: linux-media@vger.kernel.org, kernel-janitors@vger.kernel.org Smatch complainst that the call to mantis_evmgr_exit() dereferences "ca" but then we check it for NULL on the next line. I've moved the NULL check forward to avoid that. Signed-off-by: Dan Carpenter --- There aren't any callers for this function. It is commented out in mantis_dvb_exit(). diff --git a/drivers/media/pci/mantis/mantis_ca.c b/drivers/media/pci/mantis/mantis_ca.c index 3d70469..60c6c2f 100644 --- a/drivers/media/pci/mantis/mantis_ca.c +++ b/drivers/media/pci/mantis/mantis_ca.c @@ -198,11 +198,12 @@ void mantis_ca_exit(struct mantis_pci *mantis) struct mantis_ca *ca = mantis->mantis_ca; dprintk(MANTIS_DEBUG, 1, "Mantis CA exit"); + if (!ca) + return; mantis_evmgr_exit(ca); dprintk(MANTIS_ERROR, 1, "Unregistering EN50221 device"); - if (ca) - dvb_ca_en50221_release(&ca->en50221); + dvb_ca_en50221_release(&ca->en50221); kfree(ca); }