ASoC: stm: Prevent potential division by zero in stm32_sai_mclk_round…

…_rate() This patch checks if div is less than or equal to zero (div <= 0). If div is zero or negative, the function returns -EINVAL, ensuring the division operation (*prate / div) is safe to perform. Signed-off-by: Luo Yifan <[email protected]> Link: https://patch.msgid.link/[email protected] Signed-off-by: Mark Brown <[email protected]>
sedwards · Nov 7, 2024 · 63c1c87 · 63c1c87
1 parent 8c21e40
commit 63c1c87
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/sound/soc/stm/stm32_sai_sub.c b/sound/soc/stm/stm32_sai_sub.c
@@ -378,8 +378,8 @@ static long stm32_sai_mclk_round_rate(struct clk_hw *hw, unsigned long rate,
 	int div;
 
 	div = stm32_sai_get_clk_div(sai, *prate, rate);
-	if (div < 0)
-		return div;
+	if (div <= 0)
+		return -EINVAL;
 
 	mclk->freq = *prate / div;