linux-kernel - [PATCH] drm/vc4: Delete unnecessary checks before two function calls

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Message-ID: <fb33d930-6a5c-c501-6676-26bd486f1cb5@users.sourceforge.net>
Date:	Fri, 15 Jul 2016 21:21:36 +0200
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	David Airlie <airlied@...ux.ie>, Eric Anholt <eric@...olt.net>,
	dri-devel@...ts.freedesktop.org
Cc:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] drm/vc4: Delete unnecessary checks before two function calls

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Fri, 15 Jul 2016 21:15:37 +0200

The following functions test whether their argument is NULL
and then return immediately.
* drm_fbdev_cma_hotplug_event
* drm_fbdev_cma_restore_mode

Thus the tests around their calls are not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/gpu/drm/vc4/vc4_drv.c | 3 +--
 drivers/gpu/drm/vc4/vc4_kms.c | 3 +--
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c
index 54d0471..ce74d86 100644
--- a/drivers/gpu/drm/vc4/vc4_drv.c
+++ b/drivers/gpu/drm/vc4/vc4_drv.c
@@ -47,8 +47,7 @@ static void vc4_lastclose(struct drm_device *dev)
 {
 	struct vc4_dev *vc4 = to_vc4_dev(dev);
 
-	if (vc4->fbdev)
-		drm_fbdev_cma_restore_mode(vc4->fbdev);
+	drm_fbdev_cma_restore_mode(vc4->fbdev);
 }
 
 static const struct file_operations vc4_drm_fops = {
diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c
index 9a217fd..4ac894d 100644
--- a/drivers/gpu/drm/vc4/vc4_kms.c
+++ b/drivers/gpu/drm/vc4/vc4_kms.c
@@ -26,8 +26,7 @@ static void vc4_output_poll_changed(struct drm_device *dev)
 {
 	struct vc4_dev *vc4 = to_vc4_dev(dev);
 
-	if (vc4->fbdev)
-		drm_fbdev_cma_hotplug_event(vc4->fbdev);
+	drm_fbdev_cma_hotplug_event(vc4->fbdev);
 }
 
 struct vc4_commit {
-- 
2.9.1