From: Tony Lindgren <tony@atomide.com>
Date: Fri, 20 Jan 2012 15:43:53 +0000 (-0800)
Subject: pinctrl: fix pinmux_hog_maps when ctrl_dev_name is not set
X-Git-Tag: v3.3-rc2~3^2~1
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9e2551e10b5c7ba550849bd9ed519e498cc30e68;p=pandora-kernel.git

pinctrl: fix pinmux_hog_maps when ctrl_dev_name is not set

The ctrl_dev_name is optional for struct pinmux_map assuming
that ctrl_dev is set. Without this patch we can get:

Unable to handle kernel NULL pointer dereference at virtual
address 00000000
...
(pinmux_hog_maps+0xa4/0x20c)
(pinctrl_register+0x2a4/0x378)
...

Fix this by adding adding a test for map->ctrl_dev.
Additionally move the test for map->ctrl_dev earlier
to optimize out the loop a bit.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---

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