Patch "ata: ahci_xgene: dereferencing uninitialized pointer in probe" has been added to the 4.5-stable tree

[<gregkh@linuxfoundation.org>]

This is a note to let you know that I've just added the patch titled

    ata: ahci_xgene: dereferencing uninitialized pointer in probe

to the 4.5-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     ata-ahci_xgene-dereferencing-uninitialized-pointer-in-probe.patch
and it can be found in the queue-4.5 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 8134233e8d346aaa1c929dc510e75482ae318bce Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Thu, 10 Mar 2016 10:45:32 +0300
Subject: ata: ahci_xgene: dereferencing uninitialized pointer in probe

From: Dan Carpenter <dan.carpenter@oracle.com>

commit 8134233e8d346aaa1c929dc510e75482ae318bce upstream.

If the call to acpi_get_object_info() fails then "info" hasn't been
initialized.  In that situation, we already know that "version" should
be XGENE_AHCI_V1 so we don't actually need to dereference "info".

Fixes: c9802a4be661 ('ata: ahci_xgene: Add AHCI Support for 2nd HW version of APM X-Gene SoC AHCI SATA Host controller.')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/ata/ahci_xgene.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/ata/ahci_xgene.c
+++ b/drivers/ata/ahci_xgene.c
@@ -821,9 +821,9 @@ static int xgene_ahci_probe(struct platf
 				dev_warn(&pdev->dev, "%s: Error reading device info. Assume version1\n",
 					__func__);
 				version = XGENE_AHCI_V1;
-			}
-			if (info->valid & ACPI_VALID_CID)
+			} else if (info->valid & ACPI_VALID_CID) {
 				version = XGENE_AHCI_V2;
+			}
 		}
 	}
 #endif


Patches currently in stable-queue which might be from dan.carpenter@oracle.com are

queue-4.5/ata-ahci_xgene-dereferencing-uninitialized-pointer-in-probe.patch