linux-kernel - [PATCH 1/2] mtd/maps: blackfin async flash maps - fix bug: dont leak resources when initializing in case of errors

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Message-Id: <1226993597-31998-2-git-send-email-cooloney@kernel.org>
Date:	Tue, 18 Nov 2008 15:33:16 +0800
From:	Bryan Wu <cooloney@...nel.org>
To:	dwmw2@...radead.org, linux-mtd@...ts.infradead.org
Cc:	linux-kernel@...r.kernel.org,
	Mike Frysinger <vapier.adi@...il.com>,
	Bryan Wu <cooloney@...nel.org>
Subject: [PATCH 1/2] mtd/maps: blackfin async flash maps - fix bug: dont leak resources when initializing in case of errors

From: Mike Frysinger <vapier.adi@...il.com>

Signed-off-by: Mike Frysinger <vapier.adi@...il.com>
Signed-off-by: Bryan Wu <cooloney@...nel.org>
---
 drivers/mtd/maps/bfin-async-flash.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/drivers/mtd/maps/bfin-async-flash.c b/drivers/mtd/maps/bfin-async-flash.c
index 6fec86a..576611f 100644
--- a/drivers/mtd/maps/bfin-async-flash.c
+++ b/drivers/mtd/maps/bfin-async-flash.c
@@ -152,14 +152,18 @@ static int __devinit bfin_flash_probe(struct platform_device *pdev)
 
 	if (gpio_request(state->enet_flash_pin, DRIVER_NAME)) {
 		pr_devinit(KERN_ERR DRIVER_NAME ": Failed to request gpio %d\n", state->enet_flash_pin);
+		kfree(state);
 		return -EBUSY;
 	}
 	gpio_direction_output(state->enet_flash_pin, 1);
 
 	pr_devinit(KERN_NOTICE DRIVER_NAME ": probing %d-bit flash bus\n", state->map.bankwidth * 8);
 	state->mtd = do_map_probe(memory->name, &state->map);
-	if (!state->mtd)
+	if (!state->mtd) {
+		gpio_free(state->enet_flash_pin);
+		kfree(state);
 		return -ENXIO;
+	}
 
 #ifdef CONFIG_MTD_PARTITIONS
 	ret = parse_mtd_partitions(state->mtd, part_probe_types, &pdata->parts, 0);
-- 
1.5.6.3
--
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