From 8046a21e2cded66b3c1aaa84bfc50fc6a78df1dd Mon Sep 17 00:00:00 2001 From: Florian Vaussard Date: Wed, 5 Feb 2014 07:51:22 +0100 Subject: [PATCH] pinctrl: do not init debugfs entries for unimplemented functionalities Commit 82a7817 "pinctrl: pinconf: remove checks on ops->pin_config_get" removed the check on (ops != NULL) when performing pinconf_pins_show() or pinconf_groups_show(). As these entries are always enabled, even if pinconf is not supported, reading will result in an oops due to NULL ops. Instead of checking for ops, remove the corresponding debugfs entries if pinconf and/or pinmux are not implemented. Tested on OMAP3 (pinctrl-single). Cc: stable@vger.kernel.org Signed-off-by: Florian Vaussard Signed-off-by: Linus Walleij --- drivers/pinctrl/core.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c index cab020a58bf51..c0fe6091566a4 100644 --- a/drivers/pinctrl/core.c +++ b/drivers/pinctrl/core.c @@ -1644,8 +1644,10 @@ static void pinctrl_init_device_debugfs(struct pinctrl_dev *pctldev) device_root, pctldev, &pinctrl_groups_ops); debugfs_create_file("gpio-ranges", S_IFREG | S_IRUGO, device_root, pctldev, &pinctrl_gpioranges_ops); - pinmux_init_device_debugfs(device_root, pctldev); - pinconf_init_device_debugfs(device_root, pctldev); + if (pctldev->desc->pmxops) + pinmux_init_device_debugfs(device_root, pctldev); + if (pctldev->desc->confops) + pinconf_init_device_debugfs(device_root, pctldev); } static void pinctrl_remove_device_debugfs(struct pinctrl_dev *pctldev) -- 2.39.5