[PATCH 5/6] amdgpu/pm: handle return value for get_power_limit

[Darren Powell]

Signed-off-by: Darren Powell <darren.powell at amd.com>
---
 drivers/gpu/drm/amd/pm/amdgpu_pm.c | 39 ++++++++++++++++++------------
 1 file changed, 24 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
index 44715848705a..aa138abe6e1d 100644
--- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
@@ -2734,13 +2734,16 @@ static ssize_t amdgpu_hwmon_show_power_cap_max(struct device *dev,
 		return r;
 	}
 
-	if (pp_funcs && pp_funcs->get_power_limit) {
-		pp_funcs->get_power_limit(adev->powerplay.pp_handle, &limit,
-					  pp_limit_level, sample_window);
+	if (pp_funcs && pp_funcs->get_power_limit)
+		r = pp_funcs->get_power_limit(adev->powerplay.pp_handle, &limit,
+					      pp_limit_level, sample_window);
+	else
+		r = -ENODATA;
+
+	if (!r)
 		size = snprintf(buf, PAGE_SIZE, "%u\n", limit * 1000000);
-	} else {
+	else
 		size = snprintf(buf, PAGE_SIZE, "\n");
-	}
 
 	pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
 	pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
@@ -2771,13 +2774,16 @@ static ssize_t amdgpu_hwmon_show_power_cap(struct device *dev,
 		return r;
 	}
 
-	if (pp_funcs && pp_funcs->get_power_limit) {
-		pp_funcs->get_power_limit(adev->powerplay.pp_handle, &limit,
-					  pp_limit_level, sample_window);
+	if (pp_funcs && pp_funcs->get_power_limit)
+		r = pp_funcs->get_power_limit(adev->powerplay.pp_handle, &limit,
+					      pp_limit_level, sample_window);
+	else
+		r = -ENODATA;
+
+	if (!r)
 		size = snprintf(buf, PAGE_SIZE, "%u\n", limit * 1000000);
-	} else {
+	else
 		size = snprintf(buf, PAGE_SIZE, "\n");
-	}
 
 	pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
 	pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
@@ -2808,13 +2814,16 @@ static ssize_t amdgpu_hwmon_show_power_cap_default(struct device *dev,
 		return r;
 	}
 
-	if (pp_funcs && pp_funcs->get_power_limit) {
-		pp_funcs->get_power_limit(adev->powerplay.pp_handle, &limit,
-					  pp_limit_level, sample_window);
+	if (pp_funcs && pp_funcs->get_power_limit)
+		r = pp_funcs->get_power_limit(adev->powerplay.pp_handle, &limit,
+					      pp_limit_level, sample_window);
+	else
+		r = -ENODATA;
+
+	if (!r)
 		size = snprintf(buf, PAGE_SIZE, "%u\n", limit * 1000000);
-	} else {
+	else
 		size = snprintf(buf, PAGE_SIZE, "\n");
-	}
 
 	pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
 	pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
-- 
2.25.1