From mboxrd@z Thu Jan 1 00:00:00 1970 From: Philipp Zabel Date: Fri, 10 May 2019 10:25:27 +0000 Subject: Re: [PATCH][V2] reset: remove redundant null check on pointer dev Message-Id: <1557483927.7859.3.camel@pengutronix.de> List-Id: References: <20190510095832.28233-1-colin.king@canonical.com> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: quoted-printable To: Bartosz Golaszewski , Colin King Cc: kernel-janitors@vger.kernel.org, LKML On Fri, 2019-05-10 at 12:14 +0200, Bartosz Golaszewski wrote: > pt., 10 maj 2019 o 11:58 Colin King napisa=C5= =82(a): > >=20 > > From: Colin Ian King > >=20 > > Pointer dev is being dereferenced when passed to the inlined > > functon dev_name, however, dev is later being null checked > > so at first this seems like a potential null pointer dereference. > >=20 > > In fact, _reset_control_get_from_lookup is only ever called from > > __reset_control_get, right after checking dev->of_node hence > > dev can never be null. Clean this up by removing the redundant > > null check. > >=20 > > Thanks to Philipp Zabel for spotting that dev can never be null. > >=20 > > Addresses-Coverity: ("Dereference before null check") > > Fixes: 6691dffab0ab ("reset: add support for non-DT systems") > > Signed-off-by: Colin Ian King [...] > Reviewed-by: Bartosz Golaszewski Thank you both, applied to reset/fixes. regards Philipp