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eeprom: at24: check at24_read/write arguments
commit d9bcd462da
upstream.
So far we completely rely on the caller to provide valid arguments.
To be on the safe side perform an own sanity check.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
656155d076
commit
52d9bb958f
1 changed files with 6 additions and 0 deletions
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@ -507,6 +507,9 @@ static int at24_read(void *priv, unsigned int off, void *val, size_t count)
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if (unlikely(!count))
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return count;
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if (off + count > at24->chip.byte_len)
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return -EINVAL;
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/*
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* Read data from chip, protecting against concurrent updates
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* from this host, but not from other I2C masters.
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@ -539,6 +542,9 @@ static int at24_write(void *priv, unsigned int off, void *val, size_t count)
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if (unlikely(!count))
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return -EINVAL;
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if (off + count > at24->chip.byte_len)
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return -EINVAL;
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/*
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* Write data to chip, protecting against concurrent updates
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* from this host, but not from other I2C masters.
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