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authorTony Lindgren <tony@atomide.com>2012-01-24 16:28:08 -0800
committerLinus Walleij <linus.walleij@linaro.org>2012-01-26 14:13:11 +0100
commitb9130b776ee481acbc27a7e56d98df75680de369 (patch)
treeb7933b4d3e562e806c3dc61544352e46f35820cb /drivers/pinctrl/pinmux.h
parent9e2551e10b5c7ba550849bd9ed519e498cc30e68 (diff)
downloadop-kernel-dev-b9130b776ee481acbc27a7e56d98df75680de369.zip
op-kernel-dev-b9130b776ee481acbc27a7e56d98df75680de369.tar.gz
pinctrl: add checks for empty function names
This is needed as otherwise we can get the following when dealing with buggy data in a pinmux driver for pinmux_search_function: Unable to handle kernel NULL pointer dereference at virtual address 00000000 ... PC is at strcmp+0xc/0x34 LR is at pinmux_get+0x350/0x8f4 ... As we need pctldev initialized to call ops->list_functions, let's initialize it before check_ops calls and pass the pctldev to the check_ops functions. Do this for both pinmux and pinconf check_ops functions. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/pinmux.h')
-rw-r--r--drivers/pinctrl/pinmux.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/pinctrl/pinmux.h b/drivers/pinctrl/pinmux.h
index 844500b..97f5222 100644
--- a/drivers/pinctrl/pinmux.h
+++ b/drivers/pinctrl/pinmux.h
@@ -12,7 +12,7 @@
*/
#ifdef CONFIG_PINMUX
-int pinmux_check_ops(const struct pinmux_ops *ops);
+int pinmux_check_ops(struct pinctrl_dev *pctldev);
void pinmux_init_device_debugfs(struct dentry *devroot,
struct pinctrl_dev *pctldev);
void pinmux_init_debugfs(struct dentry *subsys_root);
@@ -21,7 +21,7 @@ void pinmux_unhog_maps(struct pinctrl_dev *pctldev);
#else
-static inline int pinmux_check_ops(const struct pinmux_ops *ops)
+static inline int pinmux_check_ops(struct pinctrl_dev *pctldev)
{
return 0;
}
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