diff mbox

[12/15] ptp: use permission-specific DEVICE_ATTR variants

Message ID 1477769829-22230-13-git-send-email-Julia.Lawall@lip6.fr
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Julia Lawall Oct. 29, 2016, 7:37 p.m. UTC
Use DEVICE_ATTR_RO for read only attributes.  This simplifies the
source code, improves readbility, and reduces the chance of
inconsistencies.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@ro@
declarer name DEVICE_ATTR;
identifier x,x_show;
@@

DEVICE_ATTR(x, \(0444\|S_IRUGO\), x_show, NULL);

@script:ocaml@
x << ro.x;
x_show << ro.x_show;
@@

if not (x^"_show" = x_show) then Coccilib.include_match false

@@
declarer name DEVICE_ATTR_RO;
identifier ro.x,ro.x_show;
@@

- DEVICE_ATTR(x, \(0444\|S_IRUGO\), x_show, NULL);
+ DEVICE_ATTR_RO(x);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

---
 drivers/ptp/ptp_sysfs.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Richard Cochran Oct. 31, 2016, 9:30 a.m. UTC | #1
On Sat, Oct 29, 2016 at 09:37:06PM +0200, Julia Lawall wrote:
> Use DEVICE_ATTR_RO for read only attributes.  This simplifies the
> source code, improves readbility, and reduces the chance of
> inconsistencies.

Acked-by: Richard Cochran <richardcochran@gmail.com>
David Miller Oct. 31, 2016, 7:32 p.m. UTC | #2
From: Julia Lawall <Julia.Lawall@lip6.fr>
Date: Sat, 29 Oct 2016 21:37:06 +0200

> Use DEVICE_ATTR_RO for read only attributes.  This simplifies the
> source code, improves readbility, and reduces the chance of
> inconsistencies.
> 
> The semantic patch that makes this change is as follows:
> (http://coccinelle.lip6.fr/)
 ...
> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

Also applied to net-next, thank you.
diff mbox

Patch

diff --git a/drivers/ptp/ptp_sysfs.c b/drivers/ptp/ptp_sysfs.c
index 302e626..53d4395 100644
--- a/drivers/ptp/ptp_sysfs.c
+++ b/drivers/ptp/ptp_sysfs.c
@@ -28,7 +28,7 @@  static ssize_t clock_name_show(struct device *dev,
 	struct ptp_clock *ptp = dev_get_drvdata(dev);
 	return snprintf(page, PAGE_SIZE-1, "%s\n", ptp->info->name);
 }
-static DEVICE_ATTR(clock_name, 0444, clock_name_show, NULL);
+static DEVICE_ATTR_RO(clock_name);
 
 #define PTP_SHOW_INT(name, var)						\
 static ssize_t var##_show(struct device *dev,				\