[PATCH] ASoC: cs35l56: Abort TDM mask loop at maximum channel shift

[Richard Fitzgerald]

Exit the for_each_set_bit() loop in cs35l56_make_tdm_config_word() after
all possible channel shifts have been done. This prevents going around
the loop with out-of-range shift values, which is technically undefined
behaviour. It also shuts up code analysis tools.

Signed-off-by: Richard Fitzgerald <rf@xxxxxxxxxxxxxxxxxxxxx>
---
 sound/soc/codecs/cs35l56.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/soc/codecs/cs35l56.c b/sound/soc/codecs/cs35l56.c
index 4fbbdcc87151..80158913a60e 100644
--- a/sound/soc/codecs/cs35l56.c
+++ b/sound/soc/codecs/cs35l56.c
@@ -426,6 +426,8 @@ static unsigned int cs35l56_make_tdm_config_word(unsigned int reg_val, unsigned
 		reg_val &= ~(0x3f << channel_shift);
 		reg_val |= bit_num << channel_shift;
 		channel_shift += 8;
+		if (channel_shift > 24)
+			break;
 	}
 
 	return reg_val;
-- 
2.47.3