Patch "powerpc/eeh: Fix wrong flag passed to eeh_unfreeze_pe()" has been added to the 4.4-stable tree

Patch "powerpc/eeh: Fix wrong flag passed to eeh_unfreeze_pe()" has been added to the 4.4-stable tree

[gregkh]

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

    powerpc/eeh: Fix wrong flag passed to eeh_unfreeze_pe()

to the 4.4-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:
     powerpc-eeh-fix-wrong-flag-passed-to-eeh_unfreeze_pe.patch
and it can be found in the queue-4.4 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 f05fea5b3574a5926c53865eea27139bb40b2f2b Mon Sep 17 00:00:00 2001
From: Gavin Shan <gwshan@linux.vnet.ibm.com>
Date: Thu, 19 Jan 2017 10:10:16 +1100
Subject: powerpc/eeh: Fix wrong flag passed to eeh_unfreeze_pe()

From: Gavin Shan <gwshan@linux.vnet.ibm.com>

commit f05fea5b3574a5926c53865eea27139bb40b2f2b upstream.

In __eeh_clear_pe_frozen_state(), we should pass the flag's value
instead of its address to eeh_unfreeze_pe(). The isolated flag is
cleared if no error returned from __eeh_clear_pe_frozen_state(). We
never observed the error from the function. So the isolated flag should
have been always cleared, no real issue is caused because of the misused
@flag.

This fixes the code by passing the value of @flag to eeh_unfreeze_pe().

Fixes: 5cfb20b96f6 ("powerpc/eeh: Emulate EEH recovery for VFIO devices")
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/powerpc/kernel/eeh_driver.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/powerpc/kernel/eeh_driver.c
+++ b/arch/powerpc/kernel/eeh_driver.c
@@ -485,7 +485,7 @@ static void *eeh_pe_detach_dev(void *dat
 static void *__eeh_clear_pe_frozen_state(void *data, void *flag)
 {
 	struct eeh_pe *pe = (struct eeh_pe *)data;
-	bool *clear_sw_state = flag;
+	bool clear_sw_state = *(bool *)flag;
 	int i, rc = 1;
 
 	for (i = 0; rc && i < 3; i++)


Patches currently in stable-queue which might be from gwshan@linux.vnet.ibm.com are

queue-4.4/powerpc-eeh-fix-wrong-flag-passed-to-eeh_unfreeze_pe.patch