From: Chen Gang <gang.chen@asianux•com>
To: lgirdwood@gmail•com, Mark Brown <broonie@kernel•org>,
perex@perex•cz, Takashi Iwai <tiwai@suse•de>
Cc: alsa-devel@alsa-project•org,
"linuxppc-dev@lists•ozlabs.org" <linuxppc-dev@lists•ozlabs.org>
Subject: [PATCH v2] sound/soc/fsl/fsl_ssi.c: let check zero instead of check NO_IRQ
Date: Mon, 23 Sep 2013 11:36:21 +0800 [thread overview]
Message-ID: <523FB735.2060906@asianux.com> (raw)
In-Reply-To: <523FB6F4.60803@asianux.com>
NO_IRQ may be defined as '(unsigned int) -1' in some architectures
(arm, sh ...), and either may not be defined in some architectures
which can enable SND_SOC_FSL_SSI (e.g. allmodconfig for arc).
When irq_of_parse_and_map() fails, it will always return 0, so need
check zero instead of NO_IRQ, or will cause compiling issue or run
time bug in some architectures.
Signed-off-by: Chen Gang <gang.chen@asianux•com>
---
sound/soc/fsl/fsl_ssi.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c
index 6ac8730..6c17d3e 100644
--- a/sound/soc/fsl/fsl_ssi.c
+++ b/sound/soc/fsl/fsl_ssi.c
@@ -936,7 +936,7 @@ static int fsl_ssi_probe(struct platform_device *pdev)
ssi_private->ssi_phys = res.start;
ssi_private->irq = irq_of_parse_and_map(np, 0);
- if (ssi_private->irq == NO_IRQ) {
+ if (!ssi_private->irq) {
dev_err(&pdev->dev, "no irq for node %s\n", np->full_name);
return -ENXIO;
}
--
1.7.7.6
next prev parent reply other threads:[~2013-09-23 3:37 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-23 3:24 [PATCH] sound/soc/fsl/fsl_ssi.c: let checking none-zero instead of checking NO_IRQ Chen Gang
2013-09-23 3:35 ` Chen Gang
2013-09-23 3:36 ` Chen Gang [this message]
2013-09-26 10:29 ` [PATCH v2] sound/soc/fsl/fsl_ssi.c: let check zero instead of check NO_IRQ Mark Brown
2013-09-26 10:40 ` Chen Gang
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