Applied "ASoC: stm32: sai: fix less than zero comparison on unsigned int" to the asoc tree

Commit Message

Mark Brown Nov. 5, 2018, 11:59 a.m. UTC

The patch

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

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

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Thanks,
Mark

From 6b27e27729270a2478fdebea2db9c4f57bb4e8e6 Mon Sep 17 00:00:00 2001
From: Colin Ian King <[e-mail]>
Date: Wed, 31 Oct 2018 19:31:43 +0000
Subject: [PATCH] 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 <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>
---
 sound/soc/stm/stm32_sai_sub.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

Patch

diff --git a/sound/soc/stm/stm32_sai_sub.c b/sound/soc/stm/stm32_sai_sub.c
index ea05cc91aa05..506423d5861a 100644
--- 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)