From: Jarkko Sakkinen <jarkko@kernel.org>
To: Lino Sanfilippo <LinoSanfilippo@gmx.de>
Cc: peterhuewe@gmx.de, jgg@ziepe.ca, stefanb@linux.vnet.ibm.com,
linux@mniewoehner.de, linux-integrity@vger.kernel.org,
linux-kernel@vger.kernel.org, jandryuk@gmail.com,
pmenzel@molgen.mpg.de, l.sanfilippo@kunbus.com, lukas@wunner.de,
p.rosenberger@kunbus.com
Subject: Re: [PATCH v8 11/11] tpm, tpm_tis: Enable interrupt test
Date: Sun, 23 Oct 2022 07:33:35 +0300 [thread overview]
Message-ID: <Y1TEHy74MN4a+VfO@kernel.org> (raw)
In-Reply-To: <20221017235732.10145-12-LinoSanfilippo@gmx.de>
On Tue, Oct 18, 2022 at 01:57:32AM +0200, Lino Sanfilippo wrote:
> From: Lino Sanfilippo <l.sanfilippo@kunbus.com>
>
> The test for interrupts in tpm_tis_send() is skipped if the flag
> TPM_CHIP_FLAG_IRQ is not set. Since the current code never sets the flag
> initially the test is never executed.
>
> Fix this by setting the flag in tpm_tis_gen_interrupt() right after
> interrupts have been enabled and before the test is executed.
>
> Signed-off-by: Lino Sanfilippo <l.sanfilippo@kunbus.com>
> Tested-by: Michael Niewöhner <linux@mniewoehner.de>
> ---
> drivers/char/tpm/tpm_tis_core.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c
> index 42f628e52cde..9778860e1598 100644
> --- a/drivers/char/tpm/tpm_tis_core.c
> +++ b/drivers/char/tpm/tpm_tis_core.c
> @@ -793,11 +793,16 @@ static int tpm_tis_gen_interrupt(struct tpm_chip *chip)
> if (ret < 0)
> return ret;
>
> + chip->flags |= TPM_CHIP_FLAG_IRQ;
> +
> if (chip->flags & TPM_CHIP_FLAG_TPM2)
> ret = tpm2_get_tpm_pt(chip, 0x100, &cap2, desc);
> else
> ret = tpm1_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap, desc, 0);
>
> + if (ret)
> + chip->flags &= ~TPM_CHIP_FLAG_IRQ;
> +
> tpm_tis_release_locality(chip, 0);
>
> return ret;
> --
> 2.36.1
>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
BR, Jarkko
next prev parent reply other threads:[~2022-10-23 4:33 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-17 23:57 [PATCH v8 00/11] TPM IRQ fixes Lino Sanfilippo
2022-10-17 23:57 ` [PATCH v8 01/11] tpm, tpm_tis: Avoid cache incoherency in test for interrupts Lino Sanfilippo
2022-10-17 23:57 ` [PATCH v8 02/11] tpm, tpm_tis: Claim locality before writing TPM_INT_ENABLE register Lino Sanfilippo
2022-10-17 23:57 ` [PATCH v8 03/11] tpm, tpm_tis: Disable interrupts if tpm_tis_probe_irq() failed Lino Sanfilippo
2022-10-17 23:57 ` [PATCH v8 04/11] tpm, tmp_tis: Claim locality before writing interrupt registers Lino Sanfilippo
2022-10-17 23:57 ` [PATCH v8 05/11] tpm, tpm_tis: Only handle supported interrupts Lino Sanfilippo
2022-10-17 23:57 ` [PATCH v8 06/11] tpm, tpm_tis: Move interrupt mask checks into own function Lino Sanfilippo
2022-10-17 23:57 ` [PATCH v8 07/11] tpm, tpm_tis: do not check for the active locality in interrupt handler Lino Sanfilippo
2022-10-23 4:32 ` Jarkko Sakkinen
2022-10-17 23:57 ` [PATCH v8 08/11] tpm, tpm: Implement usage counter for locality Lino Sanfilippo
2022-10-18 6:25 ` Lukas Wunner
2022-10-18 7:42 ` Lino Sanfilippo
2022-10-23 5:26 ` Jarkko Sakkinen
2022-10-25 0:25 ` Lino Sanfilippo
2022-11-01 1:06 ` Jarkko Sakkinen
2022-10-23 4:40 ` Jarkko Sakkinen
2022-10-25 0:15 ` Lino Sanfilippo
2022-11-01 1:06 ` Jarkko Sakkinen
2022-11-04 16:18 ` Lino Sanfilippo
2022-11-07 16:03 ` Jarkko Sakkinen
2022-10-17 23:57 ` [PATCH v8 09/11] tpm, tpm_tis: Request threaded interrupt handler Lino Sanfilippo
2022-10-17 23:57 ` [PATCH v8 10/11] tpm, tpm_tis: Claim locality in " Lino Sanfilippo
2022-10-17 23:57 ` [PATCH v8 11/11] tpm, tpm_tis: Enable interrupt test Lino Sanfilippo
2022-10-23 4:33 ` Jarkko Sakkinen [this message]
2022-10-23 4:34 ` Jarkko Sakkinen
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