Input: elants_i2c - zero-extend hardware ID in firmware name

Let's zero-extend hardware id number when forming firmware file name,
to avoid kernel requesting firmware like "elants_i2c_   0.bin", which
is quite unexpected.

Acked-by: Charlie Mooney<charliemooney@chromium.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/touchscreen/elants_i2c.c b/drivers/input/touchscreen/elants_i2c.c
index 43b3c9c..0efd766 100644 (file)
--- a/drivers/input/touchscreen/elants_i2c.c
+++ b/drivers/input/touchscreen/elants_i2c.c
@@ -699,7 +699,7 @@ static int elants_i2c_fw_update(struct elants_data *ts)
        char *fw_name;
        int error;
 
-       fw_name = kasprintf(GFP_KERNEL, "elants_i2c_%4x.bin", ts->hw_version);
+       fw_name = kasprintf(GFP_KERNEL, "elants_i2c_%04x.bin", ts->hw_version);
        if (!fw_name)
                return -ENOMEM;