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tpm, tpm_tis: Enable interrupt test

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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>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
This commit is contained in:
Lino Sanfilippo 2022-11-24 14:55:38 +01:00 committed by Jarkko Sakkinen
parent 548eb516ec
commit e644b2f498
1 changed files with 5 additions and 0 deletions
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5
drivers/char/tpm/tpm_tis_core.c
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@ -793,10 +793,15 @@ static void tpm_tis_gen_interrupt(struct tpm_chip *chip)
cap_t cap;
int 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;
}
/* Register the IRQ and issue a command that will cause an interrupt. If an