| Message ID | 1488459879-24349-3-git-send-email-peter.huewe@infineon.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/drivers/char/tpm/tpm_tis_spi.c b/drivers/char/tpm/tpm_tis_spi.c index 062799e04f04..639614f2d415 100644 --- a/drivers/char/tpm/tpm_tis_spi.c +++ b/drivers/char/tpm/tpm_tis_spi.c @@ -101,6 +101,11 @@ static int tpm_tis_spi_transfer(struct tpm_tis_data *data, u32 addr, u16 len, goto exit; } + if (i == TPM_RETRY) { + ret = -ETIMEDOUT; + goto exit; + } + spi_xfer.cs_change = 0; spi_xfer.len = len;
Abort the transfer with ETIMEDOUT when the TPM signals more than TPM_RETRY wait states. Continuing with the transfer in this state will only lead to arbitrary failures in other parts of the code. Cc: <stable@vger.kernel.org> Fixes: 0edbfea537d1 ("tpm/tpm_tis_spi: Add support for spi phy") Signed-off-by: Alexander Steffen <Alexander.Steffen@infineon.com> Signed-off-by: Peter Huewe <peter.huewe@infineon.com> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Tested-by: Benoit Houyere <benoit.houyere@st.com> --- drivers/char/tpm/tpm_tis_spi.c | 5 +++++ 1 file changed, 5 insertions(+)