linux-kernel - [PATCH] mmc: tmio: Use common error handling code in tmio_mmc_host

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Date:   Fri, 27 Oct 2017 19:17:24 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-mmc@...r.kernel.org, Ulf Hansson <ulf.hansson@...aro.org>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH] mmc: tmio: Use common error handling code in
 tmio_mmc_host_probe()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Fri, 27 Oct 2017 19:09:17 +0200

* Add a jump target so that a bit of exception handling can be better
  reused at the end of this function.

* Adjust condition checks.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/mmc/host/tmio_mmc_core.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/drivers/mmc/host/tmio_mmc_core.c b/drivers/mmc/host/tmio_mmc_core.c
index a7293e186e03..2e85d4048cec 100644
--- a/drivers/mmc/host/tmio_mmc_core.c
+++ b/drivers/mmc/host/tmio_mmc_core.c
@@ -1286,23 +1286,24 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host,
 	pm_runtime_enable(&pdev->dev);
 
 	ret = mmc_add_host(mmc);
-	if (ret < 0) {
-		tmio_mmc_host_remove(_host);
-		return ret;
-	}
+	if (ret)
+		goto remove_host;
 
 	dev_pm_qos_expose_latency_limit(&pdev->dev, 100);
 
 	if (pdata->flags & TMIO_MMC_USE_GPIO_CD) {
 		ret = mmc_gpio_request_cd(mmc, pdata->cd_gpio, 0);
-		if (ret < 0) {
-			tmio_mmc_host_remove(_host);
-			return ret;
-		}
+		if (ret)
+			goto remove_host;
+
 		mmc_gpiod_request_cd_irq(mmc);
 	}
 
 	return 0;
+
+remove_host:
+	tmio_mmc_host_remove(_host);
+	return ret;
 }
 EXPORT_SYMBOL_GPL(tmio_mmc_host_probe);
 
-- 
2.14.3