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| author | Shawn Guo <shawn.guo@linaro.org> | 2017-07-16 21:33:28 +0800 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2017-08-14 15:01:01 +0200 |
| commit | bba2e8712602e2d8192f748f588910d1534e4baf (patch) | |
| tree | 41ff63165211f8e27e43432d87d65e00eafbc7c0 /drivers/pinctrl/zte | |
| parent | 8939aa5f5164b51b7ebd269a0443c8cd222214c4 (diff) | |
| download | linux-bba2e8712602e2d8192f748f588910d1534e4baf.tar.bz2 | |
pinctrl: zte: fix 'functions' allocation in zx_pinctrl_build_state()
It fixes the following Smatch static check warning:
drivers/pinctrl/zte/pinctrl-zx.c:338 zx_pinctrl_build_state()
warn: passing devm_ allocated variable to kfree.
As we will be calling krealloc() on pointer 'functions', which means
kfree() will be called in there, devm_kzalloc() shouldn't be used with
the allocation in the first place. Fix the warning by calling kcalloc()
and managing the free procedure in error path on our own.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: cbff0c4d27f4 ("pinctrl: add ZTE ZX pinctrl driver support")
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/zte')
| -rw-r--r-- | drivers/pinctrl/zte/pinctrl-zx.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/pinctrl/zte/pinctrl-zx.c b/drivers/pinctrl/zte/pinctrl-zx.c index f828ee340a98..ded366bb6564 100644 --- a/drivers/pinctrl/zte/pinctrl-zx.c +++ b/drivers/pinctrl/zte/pinctrl-zx.c @@ -295,8 +295,7 @@ static int zx_pinctrl_build_state(struct platform_device *pdev) pctldev->num_groups = ngroups; /* Build function list from pin mux functions */ - functions = devm_kzalloc(&pdev->dev, info->npins * sizeof(*functions), - GFP_KERNEL); + functions = kcalloc(info->npins, sizeof(*functions), GFP_KERNEL); if (!functions) return -ENOMEM; @@ -367,8 +366,10 @@ static int zx_pinctrl_build_state(struct platform_device *pdev) func->num_group_names * sizeof(*func->group_names), GFP_KERNEL); - if (!func->group_names) + if (!func->group_names) { + kfree(functions); return -ENOMEM; + } } group = func->group_names; |