On Thu, Feb 16, 2017 at 04:08:23PM +0000, Peter Huewe wrote: > 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@xxxxxxxxxxxxxxx> > Fixes: 0edbfea537d1 ("tpm/tpm_tis_spi: Add support for spi phy") > Signed-off-by: Alexander Steffen <Alexander.Steffen@xxxxxxxxxxxx> > Signed-off-by: Peter Huewe <peter.huewe@xxxxxxxxxxxx> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx> /Jarkko > --- > drivers/char/tpm/tpm_tis_spi.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/char/tpm/tpm_tis_spi.c b/drivers/char/tpm/tpm_tis_spi.c > index 6e1a3c43f621..d782b9974c14 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, u8 len, > goto exit; > } > > + if (i == TPM_RETRY) { > + ret = -ETIMEDOUT; > + goto exit; > + } > + > spi_xfer.cs_change = 0; > spi_xfer.len = len; > > -- > 2.7.4 >