linux-kernel - [PATCH] staging: fbtft: replace __ATTR() with DEVICE

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Date:   Mon, 11 Dec 2017 15:24:30 +0530
From:   Aishwarya Pant <aishpant@...il.com>
To:     Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Cc:     julia.lawall@...6.fr
Subject: [PATCH] staging: fbtft: replace __ATTR() with DEVICE_ATTR()

This is a clean-up patch which replaces the uses of raw __ATTR(...)
macro with the more conventional DEVICE_ATTR(...) for defining device
attributes.

Done using coccinelle-

@r@
identifier foo, n;
@@

struct device_attribute foo =  __ATTR(n, ...);

@script:python p@
id;
foo << r.foo;
n << r.n;
@@

// standardise the variable name to dev_attr_{name}
coccinelle.id = "dev_attr_" + n

@@
identifier r.foo;
declarer name DEVICE_ATTR;
@@

//change definition
- struct device_attribute foo = __ATTR
+ DEVICE_ATTR
	(...);

@depends on r@
identifier r.foo, p.id;
@@

// replace usages everywhere
- foo
+ id

Signed-off-by: Aishwarya Pant <aishpant@...il.com>
---
 drivers/staging/fbtft/fbtft-sysfs.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/fbtft/fbtft-sysfs.c b/drivers/staging/fbtft/fbtft-sysfs.c
index 712096659aa0..506d604d01bb 100644
--- a/drivers/staging/fbtft/fbtft-sysfs.c
+++ b/drivers/staging/fbtft/fbtft-sysfs.c
@@ -197,19 +197,18 @@ static ssize_t show_debug(struct device *device,
 	return snprintf(buf, PAGE_SIZE, "%lu\n", par->debug);
 }
 
-static struct device_attribute debug_device_attr =
-	__ATTR(debug, 0660, show_debug, store_debug);
+static DEVICE_ATTR(debug, 0660, show_debug, store_debug);
 
 void fbtft_sysfs_init(struct fbtft_par *par)
 {
-	device_create_file(par->info->dev, &debug_device_attr);
+	device_create_file(par->info->dev, &dev_attr_debug);
 	if (par->gamma.curves && par->fbtftops.set_gamma)
 		device_create_file(par->info->dev, &gamma_device_attrs[0]);
 }
 
 void fbtft_sysfs_exit(struct fbtft_par *par)
 {
-	device_remove_file(par->info->dev, &debug_device_attr);
+	device_remove_file(par->info->dev, &dev_attr_debug);
 	if (par->gamma.curves && par->fbtftops.set_gamma)
 		device_remove_file(par->info->dev, &gamma_device_attrs[0]);
 }
-- 
2.15.1