commit d64d02ce4ebaa79bf1c026e81a956f133938af65
author Anton Blanchard <anton@samba.org> Thu Dec 10 20:04:05 2015 +1100
committer Michael Ellerman <mpe@ellerman.id.au> Thu Dec 10 20:10:53 2015 +1100
tree bd039c457421b00f2d3d6aa6bead6199f594e413
parent d1e1cf2e38def301fde42c1a33f896f974941d7b

powerpc: Call check_if_tm_restore_required() in enable_kernel_*()

Commit a0e72cf12b1a ("powerpc: Create msr_check_and_{set,clear}()")
removed a call to check_if_tm_restore_required() in the
enable_kernel_*() functions. Add them back in.

Fixes: a0e72cf12b1a ("powerpc: Create msr_check_and_{set,clear}()")
Reported-by: Rashmica Gupta <rashmicy@gmail.com>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/kernel/process.c

diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 58194c3..1eeda3b 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -181,8 +181,10 @@
 
 	msr_check_and_set(MSR_FP);
 
-	if (current->thread.regs && (current->thread.regs->msr & MSR_FP))
+	if (current->thread.regs && (current->thread.regs->msr & MSR_FP)) {
+		check_if_tm_restore_required(current);
 		__giveup_fpu(current);
+	}
 }
 EXPORT_SYMBOL(enable_kernel_fp);
 #endif /* CONFIG_PPC_FPU */
@@ -204,8 +206,10 @@
 
 	msr_check_and_set(MSR_VEC);
 
-	if (current->thread.regs && (current->thread.regs->msr & MSR_VEC))
+	if (current->thread.regs && (current->thread.regs->msr & MSR_VEC)) {
+		check_if_tm_restore_required(current);
 		__giveup_altivec(current);
+	}
 }
 EXPORT_SYMBOL(enable_kernel_altivec);
 
@@ -249,6 +253,7 @@
 	msr_check_and_set(MSR_FP|MSR_VEC|MSR_VSX);
 
 	if (current->thread.regs && (current->thread.regs->msr & MSR_VSX)) {
+		check_if_tm_restore_required(current);
 		if (current->thread.regs->msr & MSR_FP)
 			__giveup_fpu(current);
 		if (current->thread.regs->msr & MSR_VEC)
@@ -289,8 +294,10 @@
 
 	msr_check_and_set(MSR_SPE);
 
-	if (current->thread.regs && (current->thread.regs->msr & MSR_SPE))
+	if (current->thread.regs && (current->thread.regs->msr & MSR_SPE)) {
+		check_if_tm_restore_required(current);
 		__giveup_spe(current);
+	}
 }
 EXPORT_SYMBOL(enable_kernel_spe);