Commit 7c65e292 authored Oct 28, 2013 by Vladimir Zapolskiy Committed by Greg Kroah-Hartman Oct 29, 2013

misc/at24: avoid infinite loop on write()

This change fixes a problem of infinite zero byte write() without
an error status, if there is an attempt to write a file bigger than
EEPROM size over sysfs interface.

Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Cc: Wolfram Sang <w.sang@pengutronix.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 95f774c5

drivers/misc/eeprom/at24.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -428,6 +428,9 @@ static ssize_t at24_bin_write(struct file filp, struct kobject kobj,
		{
		struct at24_data *at24;

		if (unlikely(off >= attr->size))
		return -EFBIG;

		at24 = dev_get_drvdata(container_of(kobj, struct device, kobj));
		return at24_write(at24, buf, off, count);
		}