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: 886f6f8337dd ("i2c: octeon: Support I2C_M_RECV_LEN")
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Robert Richter <rric@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/i2c/busses/i2c-octeon-core.c b/drivers/i2c/busses/i2c-octeon-core.c
index 1d87757990568c40b9cebe4df7dda54fe21918f7..cd512a93f3ba9ff52343f81ce98c74ee4aa53dc2 100644 (file)
--- a/drivers/i2c/busses/i2c-octeon-core.c
+++ b/drivers/i2c/busses/i2c-octeon-core.c
@@ -346,7 +346,7 @@ static int octeon_i2c_read(struct octeon_i2c *i2c, int target,
                if (result)
                        return result;
                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];
                }