linux-kernel - [PATCH 4.1 168/267] tpm, tpm_crb: fix le64_to_cpu conversions in crb_acpi

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Date:	Fri, 31 Jul 2015 12:40:19 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Matt Fleming <matt.fleming@...el.com>,
	Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	Peter Huewe <peterhuewe@....de>
Subject: [PATCH 4.1 168/267] tpm, tpm_crb: fix le64_to_cpu conversions in crb_acpi_add()

4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>

commit 49afd7289bd937401c5f7faa193054bc3c41dad6 upstream.

le64_to_cpu() was applied twice to the physical addresses read from the
control area. This hasn't shown any visible regressions because CRB
driver has been tested only on the little endian platofrms so far.

Reported-by: Matt Fleming <matt.fleming@...el.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
Reviewed-By: Jason Gunthorpe <jgunthorpe@...idianresearch.com>
Fixes: 30fc8d138e91 ("tpm: TPM 2.0 CRB Interface")
Signed-off-by: Peter Huewe <peterhuewe@....de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/char/tpm/tpm_crb.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/char/tpm/tpm_crb.c
+++ b/drivers/char/tpm/tpm_crb.c
@@ -267,7 +267,7 @@ static int crb_acpi_add(struct acpi_devi
 
 	memcpy_fromio(&pa, &priv->cca->cmd_pa, 8);
 	pa = le64_to_cpu(pa);
-	priv->cmd = devm_ioremap_nocache(dev, le64_to_cpu(pa),
+	priv->cmd = devm_ioremap_nocache(dev, pa,
 					 ioread32(&priv->cca->cmd_size));
 	if (!priv->cmd) {
 		dev_err(dev, "ioremap of the command buffer failed\n");
@@ -276,7 +276,7 @@ static int crb_acpi_add(struct acpi_devi
 
 	memcpy_fromio(&pa, &priv->cca->rsp_pa, 8);
 	pa = le64_to_cpu(pa);
-	priv->rsp = devm_ioremap_nocache(dev, le64_to_cpu(pa),
+	priv->rsp = devm_ioremap_nocache(dev, pa,
 					 ioread32(&priv->cca->rsp_size));
 	if (!priv->rsp) {
 		dev_err(dev, "ioremap of the response buffer failed\n");


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