i2c: rcar: remove sign-compare flaw

gcc rightfully says:

drivers/i2c/busses/i2c-rcar.c:198:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c
index b694cba63807..d826e82dd997 100644
--- a/drivers/i2c/busses/i2c-rcar.c
+++ b/drivers/i2c/busses/i2c-rcar.c
@@ -195,7 +195,7 @@ static int rcar_i2c_clock_calculate(struct rcar_i2c_priv *priv,
          */
         rate = clk_get_rate(priv->clk);
         cdf = rate / 20000000;
-        if (cdf >= 1 << cdf_width) {
+        if (cdf >= 1U << cdf_width) {
                 dev_err(dev, "Input clock %lu too high\n", rate);
                 return -EIO;
         }