linux-kernel - [PATCH] VPU: mediatek: fix simple

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Date:	Fri, 22 Apr 2016 15:12:19 +0200 (CEST)
From:	Julia Lawall <julia.lawall@...6.fr>
To:	Tiffany Lin <tiffany.lin@...iatek.com>
cc:	Hans Verkuil <hans.verkuil@...co.com>, daniel.thompson@...aro.org,
	Rob Herring <robh+dt@...nel.org>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Daniel Kurtz <djkurtz@...omium.org>,
	Pawel Osciak <posciak@...omium.org>,
	Eddie Huang <eddie.huang@...iatek.com>,
	Yingjoe Chen <yingjoe.chen@...iatek.com>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-media@...r.kernel.org,
	linux-mediatek@...ts.infradead.org, PoChun.Lin@...iatek.com,
	Andrew-CT Chen <andrew-ct.chen@...iatek.com>, kbuild-all@...org
Subject: [PATCH] VPU: mediatek: fix simple_open.cocci warnings

Remove an open coded simple_open() function
and replace file operations references to the function
with simple_open() instead.

Generated by: scripts/coccinelle/api/simple_open.cocci

CC: Andrew-CT Chen <andrew-ct.chen@...iatek.com>
Signed-off-by: Fengguang Wu <fengguang.wu@...el.com>
Signed-off-by: Julia Lawall <julia.lawall@...6.fr>
---

I'm just passing this along.  Simple_open additionally has a check that
inode->i_private is not NULL, before doing the assignment.  I don't know
if that difference is important in this case.

base:   git://linuxtv.org/media_tree.git master

 mtk_vpu.c |    7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

--- a/drivers/media/platform/mtk-vpu/mtk_vpu.c
+++ b/drivers/media/platform/mtk-vpu/mtk_vpu.c
@@ -599,11 +599,6 @@ static void vpu_init_ipi_handler(void *d
 }

 #ifdef CONFIG_DEBUG_FS
-static int vpu_debug_open(struct inode *inode, struct file *file)
-{
-	file->private_data = inode->i_private;
-	return 0;
-}

 static ssize_t vpu_debug_read(struct file *file, char __user *user_buf,
 			      size_t count, loff_t *ppos)
@@ -646,7 +641,7 @@ static ssize_t vpu_debug_read(struct fil
 }

 static const struct file_operations vpu_debug_fops = {
-	.open = vpu_debug_open,
+	.open = simple_open,
 	.read = vpu_debug_read,
 };
 #endif /* CONFIG_DEBUG_FS */