From mboxrd@z Thu Jan 1 00:00:00 1970 From: shawn.guo@freescale.com (Shawn Guo) Date: Thu, 25 Sep 2014 10:15:49 +0800 Subject: [PATCH v2 1/5] pinctrl: imx: detect uninitialized pins In-Reply-To: <6d676a88eb82a47f8fa9e16abbc768e3e9ac236a.1411492954.git.stefan@agner.ch> References: <6d676a88eb82a47f8fa9e16abbc768e3e9ac236a.1411492954.git.stefan@agner.ch> Message-ID: <20140925021547.GA6405@dragon> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Sep 23, 2014 at 07:37:53PM +0200, Stefan Agner wrote: > The pinctrl driver initialized the register offsets for the pins > with 0. On Vybrid an offset of 0 is a valid offset for the pinctrl > mux register. So far, this was solved using the ZERO_OFFSET_VALID > flag which allowed offsets of 0. However, this does not allow to > verify whether a pins struct imx_pmx_func was initialized or not. > > Use signed offset values for register offsets and initialize those > with -1 in order to detect uninitialized offset values reliable. > > Signed-off-by: Stefan Agner Acked-by: Shawn Guo