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authorAxel Lin <axel.lin@gmail.com>2011-09-29 12:09:57 +0800
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-09-29 10:53:12 +0100
commitc29429f3b72fe0b593f674378e99f22d5f8bea1f (patch)
tree8d36d82bd4ff1e1cad544a4d10f35ea712b6773d /sound/soc/codecs/tlv320dac33.c
parenta8fdac83a3703c7f35d4efe37a14e38aa256919b (diff)
downloadlinux-c29429f3b72fe0b593f674378e99f22d5f8bea1f.tar.bz2
ASoC: tlv320dac33: Add guarding parentheses to macros
Put parentheses around macro argument uses. This avoids pitfalls for the programmer, where the argument expansion does not give the expected result, for example: SAMPLES_TO_US(substream->runtime->rate, dac33->uthr - DAC33_MODE7_MARGIN + 1); Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/codecs/tlv320dac33.c')
-rw-r--r--sound/soc/codecs/tlv320dac33.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/sound/soc/codecs/tlv320dac33.c b/sound/soc/codecs/tlv320dac33.c
index faa5e9fb1471..43ee3b1c757e 100644
--- a/sound/soc/codecs/tlv320dac33.c
+++ b/sound/soc/codecs/tlv320dac33.c
@@ -55,13 +55,13 @@
#define BURST_BASEFREQ_HZ 49152000
#define SAMPLES_TO_US(rate, samples) \
- (1000000000 / ((rate * 1000) / samples))
+ (1000000000 / (((rate) * 1000) / (samples)))
#define US_TO_SAMPLES(rate, us) \
- (rate / (1000000 / (us < 1000000 ? us : 1000000)))
+ ((rate) / (1000000 / ((us) < 1000000 ? (us) : 1000000)))
#define UTHR_FROM_PERIOD_SIZE(samples, playrate, burstrate) \
- ((samples * 5000) / ((burstrate * 5000) / (burstrate - playrate)))
+ (((samples)*5000) / (((burstrate)*5000) / ((burstrate) - (playrate))))
static void dac33_calculate_times(struct snd_pcm_substream *substream);
static int dac33_prepare_chip(struct snd_pcm_substream *substream);