pinctrl: Avoid coverity warning when checking width

The width is set up in single_of_to_plat() and can only have three values,
all of which result in a non-zero divisor. Add a comment.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reported-by: Coverity (CID: 331154)

diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c
index 7af6c5f..cf9ad36 100644 (file)
--- a/drivers/pinctrl/pinctrl-single.c
+++ b/drivers/pinctrl/pinctrl-single.c
@@ -471,6 +471,7 @@ static int single_probe(struct udevice *dev)
                return -ENOMEM;
        #endif
 
+       /* looks like a possible divide by 0, but data->width avoids this */
        priv->npins = size / (pdata->width / BITS_PER_BYTE);
        if (pdata->bits_per_mux) {
                if (!pdata->mask) {