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pinctrl: fix pinmux_check_ops error checking

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Do not use get_functions_count before checking.

Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Dong Aisheng 2012-04-06 20:18:09 +08:00 committed by Linus Walleij
parent d1e90e9e74
commit a1d31f71e6
1 changed files with 5 additions and 3 deletions
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8
drivers/pinctrl/pinmux.c
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@ -33,11 +33,12 @@
int pinmux_check_ops(struct pinctrl_dev *pctldev)
{
const struct pinmux_ops *ops = pctldev->desc->pmxops;
unsigned nfuncs = ops->get_functions_count(pctldev);
unsigned nfuncs;
unsigned selector = 0;
/* Check that we implement required operations */
if (!ops->get_functions_count ||
if (!ops ||
!ops->get_functions_count ||
!ops->get_function_name ||
!ops->get_function_groups ||
!ops->enable ||
@ -45,11 +46,12 @@ int pinmux_check_ops(struct pinctrl_dev *pctldev)
return -EINVAL;
/* Check that all functions registered have names */
nfuncs = ops->get_functions_count(pctldev);
while (selector < nfuncs) {
const char *fname = ops->get_function_name(pctldev,
selector);
if (!fname) {
pr_err("pinmux ops has no name for function%u\n",
dev_err(pctldev->dev, "pinmux ops has no name for function%u\n",
selector);
return -EINVAL;
}