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Commit d9bcd462 authored by Heiner Kallweit's avatar Heiner Kallweit Committed by Bartosz Golaszewski
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eeprom: at24: check at24_read/write arguments 



So far we completely rely on the caller to provide valid arguments.
To be on the safe side perform an own sanity check.

Cc: stable@vger.kernel.org
Signed-off-by: default avatarHeiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: default avatarBartosz Golaszewski <brgl@bgdev.pl>
parent 644a1f19

drivers/misc/eeprom/at24.c

+6 −0
Original line number Diff line number Diff line
@@ -569,6 +569,9 @@ static int at24_read(void *priv, unsigned int off, void *val, size_t count) 
	if (unlikely(!count))

		return count;



	if (off + count > at24->chip.byte_len)

		return -EINVAL;



	client = at24_translate_offset(at24, &off);



	ret = pm_runtime_get_sync(&client->dev);
@@ -614,6 +617,9 @@ static int at24_write(void *priv, unsigned int off, void *val, size_t count) 
	if (unlikely(!count))

		return -EINVAL;



	if (off + count > at24->chip.byte_len)

		return -EINVAL;



	client = at24_translate_offset(at24, &off);



	ret = pm_runtime_get_sync(&client->dev);