linux-kernel - [PATCH v2 4/6] soundwire: intel_init: use devm

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Message-Id: <20200531182102.27840-5-yung-chuan.liao@linux.intel.com>
Date:   Mon,  1 Jun 2020 02:21:00 +0800
From:   Bard Liao <yung-chuan.liao@...ux.intel.com>
To:     alsa-devel@...a-project.org, vkoul@...nel.org
Cc:     vinod.koul@...aro.org, linux-kernel@...r.kernel.org, tiwai@...e.de,
        broonie@...nel.org, gregkh@...uxfoundation.org, jank@...ence.com,
        srinivas.kandagatla@...aro.org, rander.wang@...ux.intel.com,
        ranjani.sridharan@...ux.intel.com, hui.wang@...onical.com,
        pierre-louis.bossart@...ux.intel.com, sanyog.r.kale@...el.com,
        slawomir.blauciak@...el.com, mengdong.lin@...el.com,
        bard.liao@...el.com
Subject: [PATCH v2 4/6] soundwire: intel_init: use devm_ allocation

From: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>

Make error handling simpler with devm_ allocation.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@...ux.intel.com>
---
 drivers/soundwire/intel_init.c | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/drivers/soundwire/intel_init.c b/drivers/soundwire/intel_init.c
index e87f17240547..f9d190157c47 100644
--- a/drivers/soundwire/intel_init.c
+++ b/drivers/soundwire/intel_init.c
@@ -42,9 +42,6 @@ static int sdw_intel_cleanup_pdev(struct sdw_intel_ctx *ctx)
 		link++;
 	}
 
-	kfree(ctx->links);
-	ctx->links = NULL;
-
 	return 0;
 }
 
@@ -96,14 +93,15 @@ static struct sdw_intel_ctx
 
 	dev_dbg(&adev->dev, "Creating %d SDW Link devices\n", count);
 
-	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+	ctx = devm_kzalloc(&adev->dev, sizeof(*ctx), GFP_KERNEL);
 	if (!ctx)
 		return NULL;
 
 	ctx->count = count;
-	ctx->links = kcalloc(ctx->count, sizeof(*ctx->links), GFP_KERNEL);
+	ctx->links = devm_kcalloc(&adev->dev, ctx->count,
+				  sizeof(*ctx->links), GFP_KERNEL);
 	if (!ctx->links)
-		goto link_err;
+		return NULL;
 
 	link = ctx->links;
 
@@ -146,9 +144,8 @@ static struct sdw_intel_ctx
 	return ctx;
 
 pdev_err:
+	ctx->count = i;
 	sdw_intel_cleanup_pdev(ctx);
-link_err:
-	kfree(ctx);
 	return NULL;
 }
 
@@ -216,7 +213,6 @@ void *sdw_intel_init(acpi_handle *parent_handle, struct sdw_intel_res *res)
 void sdw_intel_exit(struct sdw_intel_ctx *ctx)
 {
 	sdw_intel_cleanup_pdev(ctx);
-	kfree(ctx);
 }
 EXPORT_SYMBOL(sdw_intel_exit);
 
-- 
2.17.1