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char: tpm: fix error return code in tpm_cr50_i2c_tis_recv()

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Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: 3a253caaad ("char: tpm: add i2c driver for cr50")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
This commit is contained in:
Zhihao Cheng 2021-04-09 09:12:01 +08:00 committed by Jarkko Sakkinen
parent 9d53913fad
commit 3d785d73b4
1 changed files with 1 additions and 0 deletions
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drivers/char/tpm/tpm_tis_i2c_cr50.c
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@ -483,6 +483,7 @@ static int tpm_cr50_i2c_tis_recv(struct tpm_chip *chip, u8 *buf, size_t buf_len)
expected = be32_to_cpup((__be32 *)(buf + 2));
if (expected > buf_len) {
dev_err(&chip->dev, "Buffer too small to receive i2c data\n");
rc = -E2BIG;
goto out_err;
}