commit c134f0d57a47b7f8704dee1cefc246f9471f3e80
author Cyril Bur <cyrilbur@gmail.com> Wed Feb 14 14:27:06 2018 +1100
committer Michael Ellerman <mpe@ellerman.id.au> Thu Feb 15 09:54:42 2018 +1100
tree 1da876159171790a96a2a76ab5d3941be66b498b
parent 694a20dae6efc3803740971fa9f7c86b8c8d4685

powerpc: Expose TSCR via sysfs only on powernv

The TSCR can only be accessed in hypervisor mode.

Fixes: 88b5e12eeb11 ("powerpc: Expose TSCR via sysfs")
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/kernel/sysfs.c

diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index 5a8bfee..04d0bbd 100644
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c
@@ -788,7 +788,8 @@
 	if (cpu_has_feature(CPU_FTR_PPCAS_ARCH_V2))
 		device_create_file(s, &dev_attr_pir);
 
-	if (cpu_has_feature(CPU_FTR_ARCH_206))
+	if (cpu_has_feature(CPU_FTR_ARCH_206) &&
+		!firmware_has_feature(FW_FEATURE_LPAR))
 		device_create_file(s, &dev_attr_tscr);
 #endif /* CONFIG_PPC64 */
 
@@ -873,7 +874,8 @@
 	if (cpu_has_feature(CPU_FTR_PPCAS_ARCH_V2))
 		device_remove_file(s, &dev_attr_pir);
 
-	if (cpu_has_feature(CPU_FTR_ARCH_206))
+	if (cpu_has_feature(CPU_FTR_ARCH_206) &&
+		!firmware_has_feature(FW_FEATURE_LPAR))
 		device_remove_file(s, &dev_attr_tscr);
 #endif /* CONFIG_PPC64 */