From: Fabio Estevam <festevam@gmail.com>
To: alsa-devel@alsa-project.org
Cc: joancarles@fqingenieria.es,
Fabio Estevam <fabio.estevam@freescale.com>,
broonie@opensource.wolfsonmicro.com,
Fabio Estevam <festevam@gmail.com>,
kernel@pengutronix.de
Subject: [PATCH 2/2] ASoC: imx-audmux: Check for NULL pointer
Date: Thu, 5 Apr 2012 09:45:52 -0300 [thread overview]
Message-ID: <1333629952-18243-2-git-send-email-festevam@gmail.com> (raw)
In-Reply-To: <1333629952-18243-1-git-send-email-festevam@gmail.com>
Check for NULL pointer before accessing it.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
---
sound/soc/fsl/imx-audmux.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/sound/soc/fsl/imx-audmux.c b/sound/soc/fsl/imx-audmux.c
index d467a1b..21d67bb 100644
--- a/sound/soc/fsl/imx-audmux.c
+++ b/sound/soc/fsl/imx-audmux.c
@@ -76,6 +76,9 @@ static ssize_t audmux_read_file(struct file *file, char __user *user_buf,
if (audmux_clk)
clk_prepare_enable(audmux_clk);
+ if (!audmux_base)
+ return -ENOSYS;
+
ptcr = readl(audmux_base + IMX_AUDMUX_V2_PTCR(port));
pdcr = readl(audmux_base + IMX_AUDMUX_V2_PDCR(port));
--
1.7.1
next prev parent reply other threads:[~2012-04-05 12:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-05 12:45 [PATCH 1/2] ASoC: imx-audmux: Fix ssi port numbers in sysfs Fabio Estevam
2012-04-05 12:45 ` Fabio Estevam [this message]
[not found] ` <4F7D94CC.80300@pengutronix.de>
2012-04-05 12:55 ` [PATCH 2/2] ASoC: imx-audmux: Check for NULL pointer Mark Brown
2012-04-05 14:25 ` [PATCH 1/2] ASoC: imx-audmux: Fix ssi port numbers in sysfs Mark Brown
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