releases/4.14.113/thermal-intel_powerclamp-fix-__percpu-declaration-of.patch

   1 From 3d0d8c2dd0c2f0c96a255e8c332f443ad89481b3 Mon Sep 17 00:00:00 2001
   2 From: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
   3 Date: Sat, 19 Jan 2019 17:15:23 +0100
   4 Subject: thermal/intel_powerclamp: fix __percpu declaration of worker_data
   5
   6 [ Upstream commit aa36e3616532f82a920b5ebf4e059fbafae63d88 ]
   7
   8 This variable is declared as:
   9         static struct powerclamp_worker_data * __percpu worker_data;
  10 In other words, a percpu pointer to struct ...
  11
  12 But this variable not used like so but as a pointer to a percpu
  13 struct powerclamp_worker_data.
  14
  15 So fix the declaration as:
  16         static struct powerclamp_worker_data __percpu *worker_data;
  17
  18 This also quiets Sparse's warnings from __verify_pcpu_ptr(), like:
  19   494:49: warning: incorrect type in initializer (different address spaces)
  20   494:49:    expected void const [noderef] <asn:3> *__vpp_verify
  21   494:49:    got struct powerclamp_worker_data *
  22
  23 Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
  24 Reviewed-by: Petr Mladek <pmladek@suse.com>
  25 Signed-off-by: Zhang Rui <rui.zhang@intel.com>
  26 Signed-off-by: Sasha Levin <sashal@kernel.org>
  27 ---
  28  drivers/thermal/intel_powerclamp.c | 2 +-
  29  1 file changed, 1 insertion(+), 1 deletion(-)
  30
  31 diff --git a/drivers/thermal/intel_powerclamp.c b/drivers/thermal/intel_powerclamp.c
  32 index d718cd179ddb..45d9840491bd 100644
  33 --- a/drivers/thermal/intel_powerclamp.c
  34 +++ b/drivers/thermal/intel_powerclamp.c
  35 @@ -101,7 +101,7 @@ struct powerclamp_worker_data {
  36         bool clamping;
  37  };
  38
  39 -static struct powerclamp_worker_data * __percpu worker_data;
  40 +static struct powerclamp_worker_data __percpu *worker_data;
  41  static struct thermal_cooling_device *cooling_dev;
  42  static unsigned long *cpu_clamping_mask;  /* bit map for tracking per cpu
  43                                            * clamping kthread worker
  44 --
  45 2.19.1
  46