linux-kernel - [PATCH] mtd: devices: check mtd_device

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Message-ID: <20180321053709.GA5611@seema-Inspiron-15-3567>
Date:   Wed, 21 Mar 2018 11:07:09 +0530
From:   Arushi Singhal <arushisinghal19971997@...il.com>
To:     dwmw2@...radead.org
Cc:     Brian Norris <computersforpeace@...il.com>,
        Boris Brezillon <boris.brezillon@...e-electrons.com>,
        Marek Vasut <marek.vasut@...il.com>,
        Richard Weinberger <richard@....at>,
        Cyrille Pitchen <cyrille.pitchen@...ev4u.fr>,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] mtd: devices: check mtd_device_register() return code

stfsm_probe() misses error handling of mtd_device_register().

Signed-off-by: Arushi Singhal <arushisinghal19971997@...il.com>
---
 drivers/mtd/devices/st_spi_fsm.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/devices/st_spi_fsm.c b/drivers/mtd/devices/st_spi_fsm.c
index 7bc29d7..e1aa4f8 100644
--- a/drivers/mtd/devices/st_spi_fsm.c
+++ b/drivers/mtd/devices/st_spi_fsm.c
@@ -2125,7 +2125,13 @@ static int stfsm_probe(struct platform_device *pdev)
 		(long long)fsm->mtd.size, (long long)(fsm->mtd.size >> 20),
 		fsm->mtd.erasesize, (fsm->mtd.erasesize >> 10));
 
-	return mtd_device_register(&fsm->mtd, NULL, 0);
+	ret = mtd_device_register(&fsm->mtd, NULL, 0);
+	if (ret) {
+		pr_err("Failed to register device\n");
+		return ret;
+	}
+
+	return 0;
 
 err_clk_unprepare:
 	clk_disable_unprepare(fsm->clk);
-- 
2.7.4