ASoC: stm32: sai: fix less than zero comparison on unsigned int

Currently, the comparison of div < 0 is always false because div is
an unsigned int. Fix this by making div an int.

Detected by CoverityScan, CID#1475309 ("Unsigned compared against 0")

Fixes: 8307b2afd386 "(ASoC: stm32: sai: set sai as mclk clock provider")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/stm/stm32_sai_sub.c b/sound/soc/stm/stm32_sai_sub.c
index ea05cc91aa05d8d14a402769928cb9119a8c9147..506423d5861a780401bd780c3309539cf243b692 100644 (file)
--- a/sound/soc/stm/stm32_sai_sub.c
+++ b/sound/soc/stm/stm32_sai_sub.c
@@ -336,8 +336,7 @@ static int stm32_sai_mclk_set_rate(struct clk_hw *hw, unsigned long rate,
 {
        struct stm32_sai_mclk_data *mclk = to_mclk_data(hw);
        struct stm32_sai_sub_data *sai = mclk->sai_data;
-       unsigned int div;
-       int ret;
+       int div, ret;
 
        div = stm32_sai_get_clk_div(sai, parent_rate, rate);
        if (div < 0)