On Fri, Jun 26, 2026 at 06:16:53PM +0900, Myeonghun Pak wrote:
> i2c_nuvoton_wait_for_stat() enables the IRQ before waiting for the
> interrupt handler to report a status change. If the wait times out, or is
> interrupted before the handler runs, the function returns without
> balancing the enable_irq() call.
>
> Disable the IRQ before leaving the failed wait path. Also preserve an
> interrupted wait's original error code instead of converting it to
> -ETIMEDOUT inside the helper.
>
> Fixes: 4c336e4b1556 ("tpm: Add support for the Nuvoton NPCT501 I2C TPM")
> Co-developed-by: Ijae Kim <[email protected]>
> Signed-off-by: Ijae Kim <[email protected]>
> Signed-off-by: Myeonghun Pak <[email protected]>
> ---
> drivers/char/tpm/tpm_i2c_nuvoton.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/char/tpm/tpm_i2c_nuvoton.c
> b/drivers/char/tpm/tpm_i2c_nuvoton.c
> index d44903b..aa36730 100644
> --- a/drivers/char/tpm/tpm_i2c_nuvoton.c
> +++ b/drivers/char/tpm/tpm_i2c_nuvoton.c
> @@ -182,8 +182,10 @@ static int i2c_nuvoton_wait_for_stat(struct tpm_chip
> *chip, u8 mask, u8 value,
> timeout);
> if (rc > 0)
> return 0;
> - /* At this point we know that the SINT pin is asserted, so we
> - * do not need to do i2c_nuvoton_check_status */
> +
> + disable_irq(priv->irq);
> + if (rc < 0)
> + return rc;
> } else {
> unsigned long ten_msec, stop;
> bool status_valid;
> --
> 2.47.1
LGTM
Reviewed-by: Jarkko Sakkinen <[email protected]>
BR, Jarkko
