* [PATCH] ASoC: tlv320dac33: Add guarding parentheses to macros
@ 2011-09-29 4:09 Axel Lin
2011-09-29 6:59 ` Péter Ujfalusi
2011-09-29 9:53 ` Mark Brown
0 siblings, 2 replies; 4+ messages in thread
From: Axel Lin @ 2011-09-29 4:09 UTC (permalink / raw)
To: linux-kernel; +Cc: Peter Ujfalusi, Liam Girdwood, Mark Brown, alsa-devel
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>
---
sound/soc/codecs/tlv320dac33.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/sound/soc/codecs/tlv320dac33.c b/sound/soc/codecs/tlv320dac33.c
index 243d177..389b1c2 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);
--
1.7.4.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] ASoC: tlv320dac33: Add guarding parentheses to macros
2011-09-29 4:09 [PATCH] ASoC: tlv320dac33: Add guarding parentheses to macros Axel Lin
@ 2011-09-29 6:59 ` Péter Ujfalusi
2011-09-29 9:53 ` Mark Brown
1 sibling, 0 replies; 4+ messages in thread
From: Péter Ujfalusi @ 2011-09-29 6:59 UTC (permalink / raw)
To: Axel Lin; +Cc: linux-kernel, Liam Girdwood, Mark Brown, alsa-devel
On Thursday 29 September 2011 12:09:57 Axel Lin wrote:
> 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);
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] ASoC: tlv320dac33: Add guarding parentheses to macros
2011-09-29 4:09 [PATCH] ASoC: tlv320dac33: Add guarding parentheses to macros Axel Lin
@ 2011-09-29 9:53 ` Mark Brown
2011-09-29 9:53 ` Mark Brown
1 sibling, 0 replies; 4+ messages in thread
From: Mark Brown @ 2011-09-29 9:53 UTC (permalink / raw)
To: Axel Lin; +Cc: linux-kernel, Peter Ujfalusi, Liam Girdwood, alsa-devel
On Thu, Sep 29, 2011 at 12:09:57PM +0800, Axel Lin wrote:
> Put parentheses around macro argument uses. This avoids pitfalls
> for the programmer, where the argument expansion does not give the
> expected result, for example:
Applied, thanks.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] ASoC: tlv320dac33: Add guarding parentheses to macros
@ 2011-09-29 9:53 ` Mark Brown
0 siblings, 0 replies; 4+ messages in thread
From: Mark Brown @ 2011-09-29 9:53 UTC (permalink / raw)
To: Axel Lin; +Cc: Peter Ujfalusi, alsa-devel, linux-kernel, Liam Girdwood
On Thu, Sep 29, 2011 at 12:09:57PM +0800, Axel Lin wrote:
> Put parentheses around macro argument uses. This avoids pitfalls
> for the programmer, where the argument expansion does not give the
> expected result, for example:
Applied, thanks.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2011-09-29 9:53 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2011-09-29 4:09 [PATCH] ASoC: tlv320dac33: Add guarding parentheses to macros Axel Lin
2011-09-29 6:59 ` Péter Ujfalusi
2011-09-29 9:53 ` Mark Brown
2011-09-29 9:53 ` Mark Brown
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