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* [PATCH v2 1/1] tpm: add request_locality before write TPM_INT_ENABLE
@ 2021-10-13  6:25 Chen Jun
  2021-10-14  0:00 ` Jarkko Sakkinen
  2021-10-26  2:14 ` Jarkko Sakkinen
  0 siblings, 2 replies; 5+ messages in thread
From: Chen Jun @ 2021-10-13  6:25 UTC (permalink / raw)
  To: linux-kernel, linux-integrity; +Cc: peterhuewe, jarkko, jgg, rui.xiang

Locality is not appropriately requested before writing the int mask.
Add the missing boilerplate.

Fixes: e6aef069b6e9 ("tpm_tis: convert to using locality callbacks")
Signed-off-by: Chen Jun <chenjun102@huawei.com>
---

 v2: rewrite the commit message.

 drivers/char/tpm/tpm_tis_core.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c
index 69579efb247b..bea587301917 100644
--- a/drivers/char/tpm/tpm_tis_core.c
+++ b/drivers/char/tpm/tpm_tis_core.c
@@ -978,7 +978,15 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq,
 	intmask |= TPM_INTF_CMD_READY_INT | TPM_INTF_LOCALITY_CHANGE_INT |
 		   TPM_INTF_DATA_AVAIL_INT | TPM_INTF_STS_VALID_INT;
 	intmask &= ~TPM_GLOBAL_INT_ENABLE;
+
+	rc = request_locality(chip, 0);
+	if (rc < 0) {
+		rc = -ENODEV;
+		goto out_err;
+	}
+
 	tpm_tis_write32(priv, TPM_INT_ENABLE(priv->locality), intmask);
+	release_locality(chip, 0);
 
 	rc = tpm_chip_start(chip);
 	if (rc)
-- 
2.17.1


^ permalink raw reply	[flat|nested] 5+ messages in thread
* [PATCH v2 1/1] tpm: add request_locality before write TPM_INT_ENABLE
@ 2021-10-12 12:48 Chen Jun
  2021-10-12 17:34 ` Jarkko Sakkinen
  0 siblings, 1 reply; 5+ messages in thread
From: Chen Jun @ 2021-10-12 12:48 UTC (permalink / raw)
  To: linux-kernel, linux-integrity; +Cc: peterhuewe, jarkko, jgg, rui.xiang

the addr can not be written without request_locality.

Fixes: e6aef069b6e9 ("tpm_tis: convert to using locality callbacks")
Signed-off-by: Chen Jun <chenjun102@huawei.com>
---
 drivers/char/tpm/tpm_tis_core.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c
index 69579efb247b..bea587301917 100644
--- a/drivers/char/tpm/tpm_tis_core.c
+++ b/drivers/char/tpm/tpm_tis_core.c
@@ -978,7 +978,15 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq,
 	intmask |= TPM_INTF_CMD_READY_INT | TPM_INTF_LOCALITY_CHANGE_INT |
 		   TPM_INTF_DATA_AVAIL_INT | TPM_INTF_STS_VALID_INT;
 	intmask &= ~TPM_GLOBAL_INT_ENABLE;
+
+	rc = request_locality(chip, 0);
+	if (rc < 0) {
+		rc = -ENODEV;
+		goto out_err;
+	}
+
 	tpm_tis_write32(priv, TPM_INT_ENABLE(priv->locality), intmask);
+	release_locality(chip, 0);
 
 	rc = tpm_chip_start(chip);
 	if (rc)
-- 
2.17.1


^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2021-10-26  2:14 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2021-10-13  6:25 [PATCH v2 1/1] tpm: add request_locality before write TPM_INT_ENABLE Chen Jun
2021-10-14  0:00 ` Jarkko Sakkinen
2021-10-26  2:14 ` Jarkko Sakkinen
  -- strict thread matches above, loose matches on Subject: below --
2021-10-12 12:48 Chen Jun
2021-10-12 17:34 ` Jarkko Sakkinen

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