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Commit 9a492875 authored by Wolfram Sang's avatar Wolfram Sang Committed by Greg Kroah-Hartman
Browse files

i2c: octeon: check correct size of maximum RECV_LEN packet 



[ Upstream commit 1b2cfa2d1dbdcc3b6dba1ecb7026a537a1d7277f ]

I2C_SMBUS_BLOCK_MAX defines already the maximum number as defined in the
SMBus 2.0 specs. No reason to add one to it.

Fixes: 886f6f83 ("i2c: octeon: Support I2C_M_RECV_LEN")
Signed-off-by: default avatarWolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: default avatarRobert Richter <rric@kernel.org>
Signed-off-by: default avatarWolfram Sang <wsa@kernel.org>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 3ee5fd6f

drivers/i2c/busses/i2c-octeon-core.c

+1 −1
Original line number Diff line number Diff line
@@ -383,7 +383,7 @@ static int octeon_i2c_read(struct octeon_i2c *i2c, int target, 


		data[i] = octeon_i2c_data_read(i2c);

		if (recv_len && i == 0) {

			if (data[i] > I2C_SMBUS_BLOCK_MAX + 1)

			if (data[i] > I2C_SMBUS_BLOCK_MAX)

				return -EPROTO;

			length += data[i];

		}