PM / devfreq: rockchip-dfi: disable irqs during accessing ddr monitor

Change-Id: Ie4817a77fcb1283f37f41ab097f02ed7dc9cd18c
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>

diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c
index 43fcc5a7f5154ffd8ed33093dfd76a77b6028c86..cd9287faf8fb4c06ac33f39463261af6c46c7132 100644 (file)
--- a/drivers/devfreq/event/rockchip-dfi.c
+++ b/drivers/devfreq/event/rockchip-dfi.c
@@ -168,8 +168,11 @@ static int rockchip_dfi_get_event(struct devfreq_event_dev *edev,
 {
        struct rockchip_dfi *info = devfreq_event_get_drvdata(edev);
        int busier_ch;
+       unsigned long flags;
 
+       local_irq_save(flags);
        busier_ch = rockchip_dfi_get_busier_ch(edev);
+       local_irq_restore(flags);
 
        edata->load_count = info->ch_usage[busier_ch].access;
        edata->total_count = info->ch_usage[busier_ch].total;