linux-kernel - [PATCH] thermal/intel_powerclamp: fix __percpu declaration of worker

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Message-Id: <20190119161523.87999-1-luc.vanoostenryck@gmail.com>
Date:   Sat, 19 Jan 2019 17:15:23 +0100
From:   Luc Van Oostenryck <luc.vanoostenryck@...il.com>
To:     Zhang Rui <rui.zhang@...el.com>
Cc:     Petr Mladek <pmladek@...e.com>, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Luc Van Oostenryck <luc.vanoostenryck@...il.com>
Subject: [PATCH] thermal/intel_powerclamp: fix __percpu declaration of worker_data

This variable is declared as:
	static struct powerclamp_worker_data * __percpu worker_data;
In other words, a percpu pointer to struct ...

But this variable not used like so but as a pointer to a percpu
struct powerclamp_worker_data.

So fix the declaration as:
	static struct powerclamp_worker_data __percpu *worker_data;

This also quiets Sparse's warnings from __verify_pcpu_ptr(), like:
  494:49: warning: incorrect type in initializer (different address spaces)
  494:49:    expected void const [noderef] <asn:3> *__vpp_verify
  494:49:    got struct powerclamp_worker_data *

Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@...il.com>
---
 drivers/thermal/intel/intel_powerclamp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/thermal/intel/intel_powerclamp.c b/drivers/thermal/intel/intel_powerclamp.c
index 7571f7c2e..c7cba20bd 100644
--- a/drivers/thermal/intel/intel_powerclamp.c
+++ b/drivers/thermal/intel/intel_powerclamp.c
@@ -101,7 +101,7 @@ struct powerclamp_worker_data {
 	bool clamping;
 };
 
-static struct powerclamp_worker_data * __percpu worker_data;
+static struct powerclamp_worker_data __percpu * worker_data;
 static struct thermal_cooling_device *cooling_dev;
 static unsigned long *cpu_clamping_mask;  /* bit map for tracking per cpu
 					   * clamping kthread worker
-- 
2.20.0