Re: [PATCH] powerpc/cpufreq: Add pr_warn() on OPAL firmware failures

2014-08-04 Thread Gautham R Shenoy
On Sun, Aug 03, 2014 at 02:54:05PM +0530, Vaidyanathan Srinivasan wrote: @@ -131,7 +136,12 @@ static unsigned int pstate_id_to_freq(int pstate_id) int i; i = powernv_pstate_info.max - pstate_id; - BUG_ON(i = powernv_pstate_info.nr_pstates || i 0); + if (i =

[PATCH] powerpc/cpufreq: Add pr_warn() on OPAL firmware failures

2014-08-03 Thread Vaidyanathan Srinivasan
Cpufreq depends on platform firmware to implement PStates. In case of platform firmware failure, cpufreq should not panic host kernel with BUG_ON(). Less severe pr_warn() will suffice. Add firmware_has_feature(FW_FEATURE_OPALv3) check to skip probing for device-tree on non-powernv platforms.