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Fri, 26 Jun 2026 02:17:03 -0700 (PDT) Received: from localhost.localdomain ([14.5.152.27]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2c7f63b26e6sm35750355ad.52.2026.06.26.02.17.00 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Fri, 26 Jun 2026 02:17:02 -0700 (PDT) From: Myeonghun Pak To: Peter Huewe , Jarkko Sakkinen Cc: Jason Gunthorpe , linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org, Myeonghun Pak , Ijae Kim Subject: [PATCH] tpm: tpm_i2c_nuvoton: disable IRQ on wait timeout Date: Fri, 26 Jun 2026 18:16:53 +0900 Message-Id: <20260626091653.54929-1-mhun512@gmail.com> X-Mailer: git-send-email 2.39.5 (Apple Git-154) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Ijae Kim Signed-off-by: Myeonghun Pak --- 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