mfd: aat2870-core: Stop using obsolte simple_strtoul()

Soothes checkpatch warning:

    WARNING: simple_strtoul is obsolete, use kstrtoul instead
    #306: FILE: drivers/mfd/aat2870-core.c:306:
    +	addr = simple_strtoul(start, &start, 16);

Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/drivers/mfd/aat2870-core.c b/drivers/mfd/aat2870-core.c
index 14d9542a4eed8d1408c556c781795e0c24869a9c..4e6e03d63e12bab9e228f5bbbdbc72a4a1a0f6da 100644 (file)
--- a/drivers/mfd/aat2870-core.c
+++ b/drivers/mfd/aat2870-core.c
@@ -303,7 +303,10 @@ static ssize_t aat2870_reg_write_file(struct file *file,
        while (*start == ' ')
                start++;
 
-       addr = simple_strtoul(start, &start, 16);
+       ret = kstrtoul(start, 16, &addr);
+       if (ret)
+               return ret;
+
        if (addr >= AAT2870_REG_NUM) {
                dev_err(aat2870->dev, "Invalid address, 0x%lx\n", addr);
                return -EINVAL;