linux-kernel - [PATCH 3.19.y-ckt 01/54] [3.19-stable-only] Revert "powerpc: Update TM user feature bits in scan

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Message-Id: <1462838713-31343-2-git-send-email-kamal@canonical.com>
Date:	Mon,  9 May 2016 17:04:20 -0700
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.19.y-ckt 01/54] [3.19-stable-only] Revert "powerpc: Update TM user feature bits in scan_features()"

3.19.8-ckt21 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Kamal Mostafa <kamal@...onical.com>

This reverts commit cde5ccf81fd35d89940b841e808cc9cd5492b5bc.

Not suitable for 3.19-stable (no PPC_FEATURE2_HTM_NOSC_COMP).

Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 arch/powerpc/kernel/prom.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 46b5ecf..6d198c1 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -162,12 +162,11 @@ static struct ibm_pa_feature {
 	{0, MMU_FTR_CI_LARGE_PAGE, 0, 0,		1, 2, 0},
 	{CPU_FTR_REAL_LE, 0, PPC_FEATURE_TRUE_LE, 0, 5, 0, 0},
 	/*
-	 * If the kernel doesn't support TM (ie CONFIG_PPC_TRANSACTIONAL_MEM=n),
-	 * we don't want to turn on TM here, so we use the *_COMP versions
-	 * which are 0 if the kernel doesn't support TM.
+	 * If the kernel doesn't support TM (ie. CONFIG_PPC_TRANSACTIONAL_MEM=n),
+	 * we don't want to turn on CPU_FTR_TM here, so we use CPU_FTR_TM_COMP
+	 * which is 0 if the kernel doesn't support TM.
 	 */
-	{CPU_FTR_TM_COMP, 0, 0,
-	 PPC_FEATURE2_HTM_COMP|PPC_FEATURE2_HTM_NOSC_COMP, 22, 0, 0},
+	{CPU_FTR_TM_COMP, 0, 0, 0,		22, 0, 0},
 };
 
 static void __init scan_features(unsigned long node, const unsigned char *ftrs,
-- 
2.7.4