linux-kernel - [PATCH 4.1 169/267] vTPM: set virtual device before passing to ibmvtpm_reset

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Message-Id: <20150731194007.612094365@linuxfoundation.org>
Date:	Fri, 31 Jul 2015 12:40:20 -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,
	"Hon Ching(Vicky) Lo" <honclo@...ux.vnet.ibm.com>,
	Joy Latten <jmlatten@...ux.vnet.ibm.com>,
	Ashley Lai <ashley@...leylai.com>,
	Peter Huewe <peterhuewe@....de>
Subject: [PATCH 4.1 169/267] vTPM: set virtual device before passing to ibmvtpm_reset_crq

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

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

From: "Hon Ching \\(Vicky\\) Lo" <honclo@...ux.vnet.ibm.com>

commit 9d75f08946e8485109458ccf16f714697c207f41 upstream.

tpm_ibmvtpm_probe() calls ibmvtpm_reset_crq(ibmvtpm) without having yet
set the virtual device in the ibmvtpm structure. So in ibmvtpm_reset_crq,
the phype call contains empty unit addresses, ibmvtpm->vdev->unit_address.

Signed-off-by: Hon Ching(Vicky) Lo <honclo@...ux.vnet.ibm.com>
Signed-off-by: Joy Latten <jmlatten@...ux.vnet.ibm.com>
Reviewed-by: Ashley Lai <ashley@...leylai.com>
Fixes: 132f76294744 ("drivers/char/tpm: Add new device driver to support IBM vTPM")
Signed-off-by: Peter Huewe <peterhuewe@....de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/char/tpm/tpm_ibmvtpm.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/char/tpm/tpm_ibmvtpm.c
+++ b/drivers/char/tpm/tpm_ibmvtpm.c
@@ -578,6 +578,9 @@ static int tpm_ibmvtpm_probe(struct vio_
 		goto cleanup;
 	}
 
+	ibmvtpm->dev = dev;
+	ibmvtpm->vdev = vio_dev;
+
 	crq_q = &ibmvtpm->crq_queue;
 	crq_q->crq_addr = (struct ibmvtpm_crq *)get_zeroed_page(GFP_KERNEL);
 	if (!crq_q->crq_addr) {
@@ -622,8 +625,6 @@ static int tpm_ibmvtpm_probe(struct vio_
 
 	crq_q->index = 0;
 
-	ibmvtpm->dev = dev;
-	ibmvtpm->vdev = vio_dev;
 	TPM_VPRIV(chip) = (void *)ibmvtpm;
 
 	spin_lock_init(&ibmvtpm->rtce_lock);


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