diff options
Diffstat (limited to 'drivers/pinctrl/pinmux.c')
| -rw-r--r-- | drivers/pinctrl/pinmux.c | 15 |
1 files changed, 3 insertions, 12 deletions
diff --git a/drivers/pinctrl/pinmux.c b/drivers/pinctrl/pinmux.c index 021382632608..82c750a31952 100644 --- a/drivers/pinctrl/pinmux.c +++ b/drivers/pinctrl/pinmux.c @@ -677,7 +677,6 @@ void pinmux_show_setting(struct seq_file *s, DEFINE_SHOW_ATTRIBUTE(pinmux_functions); DEFINE_SHOW_ATTRIBUTE(pinmux_pins); -#define PINMUX_SELECT_MAX 128 static ssize_t pinmux_select(struct file *file, const char __user *user_buf, size_t len, loff_t *ppos) { @@ -689,17 +688,9 @@ static ssize_t pinmux_select(struct file *file, const char __user *user_buf, unsigned int num_groups; int fsel, gsel, ret; - if (len > PINMUX_SELECT_MAX) - return -ENOMEM; - - buf = kzalloc(PINMUX_SELECT_MAX, GFP_KERNEL); - if (!buf) - return -ENOMEM; - - ret = strncpy_from_user(buf, user_buf, PINMUX_SELECT_MAX); - if (ret < 0) - goto exit_free_buf; - buf[len-1] = '\0'; + buf = memdup_user_nul(user_buf, len); + if (IS_ERR(buf)) + return PTR_ERR(buf); /* remove leading and trailing spaces of input buffer */ gname = strstrip(buf); |