linux-kernel - [PATCH v2] fbdev: broadsheetfb: fix memory leak

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Message-Id: <1443257530-26848-1-git-send-email-sudipm.mukherjee@gmail.com>
Date:	Sat, 26 Sep 2015 14:22:10 +0530
From:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	Tomi Valkeinen <tomi.valkeinen@...com>
Cc:	linux-kernel@...r.kernel.org, linux-fbdev@...r.kernel.org,
	Sudip Mukherjee <sudipm.mukherjee@...il.com>
Subject: [PATCH v2] fbdev: broadsheetfb: fix memory leak

We have requested the firmware and it was loaded but we missed releasing
it both on success and error.

Signed-off-by: Sudip Mukherjee <sudip@...torindia.org>
---

v1: relased the firmware only on the error path.

 drivers/video/fbdev/broadsheetfb.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/video/fbdev/broadsheetfb.c b/drivers/video/fbdev/broadsheetfb.c
index 0e5fde1..9f9a7be 100644
--- a/drivers/video/fbdev/broadsheetfb.c
+++ b/drivers/video/fbdev/broadsheetfb.c
@@ -752,7 +752,7 @@ static ssize_t broadsheet_loadstore_waveform(struct device *dev,
 	if ((fw_entry->size < 8*1024) || (fw_entry->size > 64*1024)) {
 		dev_err(dev, "Invalid waveform\n");
 		err = -EINVAL;
-		goto err_failed;
+		goto err_fw;
 	}
 
 	mutex_lock(&(par->io_lock));
@@ -762,13 +762,15 @@ static ssize_t broadsheet_loadstore_waveform(struct device *dev,
 	mutex_unlock(&(par->io_lock));
 	if (err < 0) {
 		dev_err(dev, "Failed to store broadsheet waveform\n");
-		goto err_failed;
+		goto err_fw;
 	}
 
 	dev_info(dev, "Stored broadsheet waveform, size %zd\n", fw_entry->size);
 
-	return len;
+	err = len;
 
+err_fw:
+	release_firmware(fw_entry);
 err_failed:
 	return err;
 }
-- 
1.9.1

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