linux-kernel - [PATCH -next] ASoC: SOF: imx8: Fix return value check in imx8

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Date:   Mon, 26 Aug 2019 12:00:03 +0000
From:   Wei Yongjun <weiyongjun1@...wei.com>
To:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        "Pengutronix Kernel Team" <kernel@...gutronix.de>,
        Daniel Baluta <daniel.baluta@....com>
CC:     Wei Yongjun <weiyongjun1@...wei.com>,
        <alsa-devel@...a-project.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <kernel-janitors@...r.kernel.org>
Subject: [PATCH -next] ASoC: SOF: imx8: Fix return value check in imx8_probe()

In case of error, the function devm_ioremap_wc() returns NULL pointer
not ERR_PTR(). The IS_ERR() test in the return value check should be
replaced with NULL test.

Fixes: 202acc565a1f ("ASoC: SOF: imx: Add i.MX8 HW support")
Signed-off-by: Wei Yongjun <weiyongjun1@...wei.com>
---
 sound/soc/sof/imx/imx8.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/sof/imx/imx8.c b/sound/soc/sof/imx/imx8.c
index e502f584207f..263d4df35fe8 100644
--- a/sound/soc/sof/imx/imx8.c
+++ b/sound/soc/sof/imx/imx8.c
@@ -296,10 +296,10 @@ static int imx8_probe(struct snd_sof_dev *sdev)
 	sdev->bar[SOF_FW_BLK_TYPE_SRAM] = devm_ioremap_wc(sdev->dev, res.start,
 							  res.end - res.start +
 							  1);
-	if (IS_ERR(sdev->bar[SOF_FW_BLK_TYPE_SRAM])) {
+	if (!sdev->bar[SOF_FW_BLK_TYPE_SRAM]) {
 		dev_err(sdev->dev, "failed to ioremap mem 0x%x size 0x%x\n",
 			base, size);
-		ret = PTR_ERR(sdev->bar[SOF_FW_BLK_TYPE_SRAM]);
+		ret = -ENOMEM;
 		goto exit_pdev_unregister;
 	}
 	sdev->mailbox_bar = SOF_FW_BLK_TYPE_SRAM;