linux-kernel - [PATCH] drm/nouveau/debugfs: Fix check of pm_runtime_get

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Message-ID: <20190228122459.25460-1-yuehaibing@huawei.com>
Date:   Thu, 28 Feb 2019 20:24:59 +0800
From:   Yue Haibing <yuehaibing@...wei.com>
To:     <bskeggs@...hat.com>, <airlied@...ux.ie>, <daniel@...ll.ch>
CC:     <linux-kernel@...r.kernel.org>, <nouveau@...ts.freedesktop.org>,
        <dri-devel@...ts.freedesktop.org>,
        YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH] drm/nouveau/debugfs: Fix check of pm_runtime_get_sync failure

From: YueHaibing <yuehaibing@...wei.com>

pm_runtime_get_sync returns negative on failure.

Fixes: eaeb9010bb4b ("drm/nouveau/debugfs: Wake up GPU before doing any reclocking")
Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
 drivers/gpu/drm/nouveau/nouveau_debugfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_debugfs.c b/drivers/gpu/drm/nouveau/nouveau_debugfs.c
index 88a52f6..7dfbbbc 100644
--- a/drivers/gpu/drm/nouveau/nouveau_debugfs.c
+++ b/drivers/gpu/drm/nouveau/nouveau_debugfs.c
@@ -181,7 +181,7 @@ nouveau_debugfs_pstate_set(struct file *file, const char __user *ubuf,
 	}
 
 	ret = pm_runtime_get_sync(drm->dev);
-	if (IS_ERR_VALUE(ret) && ret != -EACCES)
+	if (ret < 0 && ret != -EACCES)
 		return ret;
 	ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_USER, &args, sizeof(args));
 	pm_runtime_put_autosuspend(drm->dev);
-- 
2.7.0