From: Marcel Selhorst <tpm@selhorst.net>
Date: Thu, 29 Nov 2007 00:21:27 +0000 (-0800)
Subject: TPM: fix TIS device driver locality request
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=05a462afe80553550bc77afc724ce60b42ad587e;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

TPM: fix TIS device driver locality request

During the initialization of the TPM TIS driver, the necessary locality has
to be requested earlier in the init-process.  Depending on the used TPM
chip, this leads to wrong information.  For example: Lenovo X61s with Atmel
TPM:

tpm_tis 00:0a: 1.2 TPM (device-id 0xFFFF, rev-id 255)

But correct is:

tpm_tis 00:0c: 1.2 TPM (device-id 0x3203, rev-id 9)

This short patch fixes this issue.

Signed-off-by: Marcel Selhorst <tpm@selhorst.net>
Cc: Kylene Jo Hall <kjhall@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index fd771a4d6d18..81503d94fecc 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -450,6 +450,11 @@ static int tpm_tis_init(struct device *dev, resource_size_t start,
 		goto out_err;
 	}
 
+	if (request_locality(chip, 0) != 0) {
+		rc = -ENODEV;
+		goto out_err;
+	}
+
 	vendor = ioread32(chip->vendor.iobase + TPM_DID_VID(0));
 
 	/* Default timeouts */
@@ -487,11 +492,6 @@ static int tpm_tis_init(struct device *dev, resource_size_t start,
 	if (intfcaps & TPM_INTF_DATA_AVAIL_INT)
 		dev_dbg(dev, "\tData Avail Int Support\n");
 
-	if (request_locality(chip, 0) != 0) {
-		rc = -ENODEV;
-		goto out_err;
-	}
-
 	/* INTERRUPT Setup */
 	init_waitqueue_head(&chip->vendor.read_queue);
 	init_waitqueue_head(&chip->vendor.int_queue);