linux-kernel - [PATCH] ASoC: Intel: Skylake: fix uninitialized pointer use

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Date:   Thu, 27 Apr 2017 12:59:58 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Cc:     Arnd Bergmann <arnd@...db.de>, Vinod Koul <vinod.koul@...el.com>,
        Jeeja KP <jeeja.kp@...el.com>,
        Jayachandran B <jayachandran.b@...el.com>,
        Senthilnathan Veppur <senthilnathanx.veppur@...el.com>,
        "Subhransu S. Prusty" <subhransu.s.prusty@...el.com>,
        Ramesh Babu <ramesh.babu@...el.com>,
        G Kranthi <gudishax.kranthikumar@...el.com>,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ASoC: Intel: Skylake: fix uninitialized pointer use

The error handling in bxt_sst_dsp_init() got changed in a way that
it now derefences an uninitialized pointer when printing a warning
about the device not being found:

sound/soc/intel/skylake/bxt-sst.c: In function 'bxt_sst_dsp_init':
sound/soc/intel/skylake/bxt-sst.c:567:14: error: 'skl' may be used uninitialized in this function [-Werror=maybe-uninitialized]

As we do have a valid device pointer available at the call site,
let's use that instead.

Fixes: 9fe9c7119283 ("ASoC: Intel: Skylake: Move sst common initialization to a helper function")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 sound/soc/intel/skylake/bxt-sst.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/intel/skylake/bxt-sst.c b/sound/soc/intel/skylake/bxt-sst.c
index fde4bc0f35b0..f5e7dbb1ba39 100644
--- a/sound/soc/intel/skylake/bxt-sst.c
+++ b/sound/soc/intel/skylake/bxt-sst.c
@@ -564,7 +564,7 @@ int bxt_sst_dsp_init(struct device *dev, void __iomem *mmio_base, int irq,
 
 	ret = skl_sst_ctx_init(dev, irq, fw_name, dsp_ops, dsp, &skl_dev);
 	if (ret < 0) {
-		dev_err(skl->dev, "%s: no device\n", __func__);
+		dev_err(dev, "%s: no device\n", __func__);
 		return ret;
 	}
 
-- 
2.9.0