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>

diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index 5a8bfee6e1877c58ae607445ea77af1ed6b2e869..04d0bbd7a1dd03e13e47e4c5e10a647672955ea3 100644 (file)
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c
@@ -788,7 +788,8 @@ static int register_cpu_online(unsigned int cpu)
        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 @@ static int unregister_cpu_online(unsigned int cpu)
        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 */