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-rw-r--r--include/ufs/ufshcd.h16
1 files changed, 10 insertions, 6 deletions
diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h
index b6311069d901..ce7667b020e2 100644
--- a/include/ufs/ufshcd.h
+++ b/include/ufs/ufshcd.h
@@ -436,6 +436,10 @@ struct ufs_clk_gating {
/**
* struct ufs_clk_scaling - UFS clock scaling related data
+ * @workq: workqueue to schedule devfreq suspend/resume work
+ * @suspend_work: worker to suspend devfreq
+ * @resume_work: worker to resume devfreq
+ * @lock: serialize access to some struct ufs_clk_scaling members
* @active_reqs: number of requests that are pending. If this is zero when
* devfreq ->target() function is called then schedule "suspend_work" to
* suspend devfreq.
@@ -445,9 +449,6 @@ struct ufs_clk_gating {
* @enable_attr: sysfs attribute to enable/disable clock scaling
* @saved_pwr_info: UFS power mode may also be changed during scaling and this
* one keeps track of previous power mode.
- * @workq: workqueue to schedule devfreq suspend/resume work
- * @suspend_work: worker to suspend devfreq
- * @resume_work: worker to resume devfreq
* @target_freq: frequency requested by devfreq framework
* @min_gear: lowest HS gear to scale down to
* @is_enabled: tracks if scaling is currently enabled or not, controlled by
@@ -459,15 +460,18 @@ struct ufs_clk_gating {
* @is_suspended: tracks if devfreq is suspended or not
*/
struct ufs_clk_scaling {
+ struct workqueue_struct *workq;
+ struct work_struct suspend_work;
+ struct work_struct resume_work;
+
+ spinlock_t lock;
+
int active_reqs;
unsigned long tot_busy_t;
ktime_t window_start_t;
ktime_t busy_start_t;
struct device_attribute enable_attr;
struct ufs_pa_layer_attr saved_pwr_info;
- struct workqueue_struct *workq;
- struct work_struct suspend_work;
- struct work_struct resume_work;
unsigned long target_freq;
u32 min_gear;
bool is_enabled;