linux-kernel - [patch] char/pcmcia: add some error checking in scr24x

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Message-ID: <20161124104623.GA17225@mwanda>
Date:   Thu, 24 Nov 2016 13:46:23 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Lubomir Rintel <lkundrak@...sk>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [patch] char/pcmcia: add some error checking in scr24x_read()

The "ret = " assignment seems to have accidentally been left off.

Fixes: f2ed287bcc90 ("char/pcmcia: add scr24x_cs chip card interface driver")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

diff --git a/drivers/char/pcmcia/scr24x_cs.c b/drivers/char/pcmcia/scr24x_cs.c
index 4f215ce..8523ec5 100644
--- a/drivers/char/pcmcia/scr24x_cs.c
+++ b/drivers/char/pcmcia/scr24x_cs.c
@@ -157,7 +157,7 @@ static ssize_t scr24x_read(struct file *filp, char __user *buf, size_t count,
 		ret = -EIO;
 		goto out;
 	}
-	read_chunk(dev, CCID_HEADER_SIZE, len);
+	ret = read_chunk(dev, CCID_HEADER_SIZE, len);
 	if (ret < 0)
 		goto out;