powerpc: Update cpu_user_features2 in scan_features()

scan_features() updates cpu_user_features but not cpu_user_features2.

Amongst other things, cpu_user_features2 contains the user TM feature
bits which we must keep in sync with the kernel TM feature bit.

Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: stable@vger.kernel.org
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

1 files changed, 11 insertions, 8 deletions

diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 080c96b44a7f..03fce77e441d 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -148,23 +148,24 @@ static struct ibm_pa_feature {
         unsigned long   cpu_features;   /* CPU_FTR_xxx bit */
         unsigned long   mmu_features;   /* MMU_FTR_xxx bit */
         unsigned int    cpu_user_ftrs;  /* PPC_FEATURE_xxx bit */
+        unsigned int    cpu_user_ftrs2; /* PPC_FEATURE2_xxx bit */
         unsigned char   pabyte;         /* byte number in ibm,pa-features */
         unsigned char   pabit;          /* bit number (big-endian) */
         unsigned char   invert;         /* if 1, pa bit set => clear feature */
 } ibm_pa_features[] __initdata = {
-        {0, 0, PPC_FEATURE_HAS_MMU,     0, 0, 0},
-        {0, 0, PPC_FEATURE_HAS_FPU,     0, 1, 0},
-        {CPU_FTR_CTRL, 0, 0,            0, 3, 0},
-        {CPU_FTR_NOEXECUTE, 0, 0,       0, 6, 0},
-        {CPU_FTR_NODSISRALIGN, 0, 0,    1, 1, 1},
-        {0, MMU_FTR_CI_LARGE_PAGE, 0,   1, 2, 0},
-        {CPU_FTR_REAL_LE, 0, PPC_FEATURE_TRUE_LE, 5, 0, 0},
+        {0, 0, PPC_FEATURE_HAS_MMU, 0,          0, 0, 0},
+        {0, 0, PPC_FEATURE_HAS_FPU, 0,          0, 1, 0},
+        {CPU_FTR_CTRL, 0, 0, 0,                 0, 3, 0},
+        {CPU_FTR_NOEXECUTE, 0, 0, 0,            0, 6, 0},
+        {CPU_FTR_NODSISRALIGN, 0, 0, 0,         1, 1, 1},
+        {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 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,         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,
@@ -195,10 +196,12 @@ static void __init scan_features(unsigned long node, const unsigned char *ftrs,
                 if (bit ^ fp->invert) {
                         cur_cpu_spec->cpu_features |= fp->cpu_features;
                         cur_cpu_spec->cpu_user_features |= fp->cpu_user_ftrs;
+                        cur_cpu_spec->cpu_user_features2 |= fp->cpu_user_ftrs2;
                         cur_cpu_spec->mmu_features |= fp->mmu_features;
                 } else {
                         cur_cpu_spec->cpu_features &= ~fp->cpu_features;
                         cur_cpu_spec->cpu_user_features &= ~fp->cpu_user_ftrs;
+                        cur_cpu_spec->cpu_user_features2 &= ~fp->cpu_user_ftrs2;
                         cur_cpu_spec->mmu_features &= ~fp->mmu_features;
                 }
         }