thermal: fix big core smp fail to cooldev crash

PD#170391:thermal: fix big core smp fail to cooldev crash
	big core smp fail, cooldev driver cannot get
	cpu2 cpufreq policy, driver init fail, gpu cooldev
	data not init, mail ko init fail crash.

Change-Id: I705240b060d80f7afe97fe4dcb20bb2beebc2e13
Signed-off-by: Huan Biao <huan.biao@amlogic.com>

diff --git a/drivers/amlogic/thermal/meson_cooldev.c b/drivers/amlogic/thermal/meson_cooldev.c
index 882e8fa8383be7b5837df1ff3bb8a17294d95830..dba732178eb0c2e21619b2dd5ab5507606bdb019 100644 (file)
--- a/drivers/amlogic/thermal/meson_cooldev.c
+++ b/drivers/amlogic/thermal/meson_cooldev.c
@@ -100,6 +100,10 @@ static struct cool_dev *get_gcool_dev_by_node(struct meson_cooldev *mgcooldev,
        int i;
        struct cool_dev *dev;
 
+       if (!meson_gcooldev) {
+               pr_info("meson_gcooldev is null, no set min status\n");
+               return NULL;
+       }
        if (!np)
                return NULL;
        for (i = 0; i < mgcooldev->cool_dev_num; i++) {
@@ -159,8 +163,7 @@ int meson_gcooldev_min_update(struct thermal_cooling_device *cdev)
 {
        struct gpufreq_cooling_device *gf_cdev;
        struct gpucore_cooling_device *gc_cdev;
-       //struct device_node *parent;
-       struct cool_dev *cool = NULL;
+       struct cool_dev *cool;
        long min_state;
        int ret;
 
@@ -187,6 +190,7 @@ int meson_gcooldev_min_update(struct thermal_cooling_device *cdev)
                break;
 
        default:
+               pr_info("can not find cool devices type\n");
                return -EINVAL;
        }
 
@@ -208,14 +212,12 @@ int meson_cooldev_min_update(struct platform_device *pdev, int index)
        int ret;
        int cpu, c_id;
 
-       /*save pdev for mali ko api*/
-       meson_gcooldev = platform_get_drvdata(pdev);
        cool = get_cool_dev_by_node(pdev, cdev->np);
        if (!cool)
                return -ENODEV;
 
-       if (cool->cooling_dev == NULL)
-               cool->cooling_dev = cdev;
+       if (!cdev)
+               return -ENODEV;
 
        if (cool->min_state == 0)
                return 0;
@@ -298,6 +300,7 @@ static int register_cool_dev(struct platform_device *pdev, int index)
 
        if (IS_ERR(cool->cooling_dev)) {
                pr_err("thermal: register %s failed\n", cool->device_type);
+               cool->cooling_dev = NULL;
                return -EINVAL;
        }
        return 0;
@@ -405,7 +408,7 @@ static int meson_cooldev_probe(struct platform_device *pdev)
        }
 
        if (parse_cool_device(pdev))
-               return -EINVAL;
+               pr_info("meson_cdev one or more cooldev register fail\n");
 
        /* update min state for each device */
        for (i = 0; i < mcooldev->cool_dev_num; i++) {
@@ -413,6 +416,9 @@ static int meson_cooldev_probe(struct platform_device *pdev)
                if (cool->cooling_dev)
                        meson_cooldev_min_update(pdev, i);
        }
+       /*save pdev for mali ko api*/
+       meson_gcooldev = platform_get_drvdata(pdev);
+
        pr_info("meson_cdev probe done\n");
        return 0;
 }