diff mbox

[03/15] wm8350_power: use permission-specific DEVICE_ATTR variants

Message ID 1477769829-22230-4-git-send-email-Julia.Lawall@lip6.fr (mailing list archive)
State Not Applicable, archived
Headers show

Commit Message

Julia Lawall Oct. 29, 2016, 7:36 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/power/supply/wm8350_power.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)


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Comments

Charles Keepax Oct. 30, 2016, 3:03 p.m. UTC | #1
On Sat, Oct 29, 2016 at 09:36:57PM +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.
> 
> 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>
> 
> ---

Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> 

Thanks,
Charles
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Sebastian Reichel Nov. 23, 2016, 11:10 p.m. UTC | #2
Hi Julia,

On Sat, Oct 29, 2016 at 09:36:57PM +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.
> 
> 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/power/supply/wm8350_power.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Thanks, queued.

-- Sebastian
diff mbox

Patch

diff --git a/drivers/power/supply/wm8350_power.c b/drivers/power/supply/wm8350_power.c
index 5c58806..a2740cf 100644
--- a/drivers/power/supply/wm8350_power.c
+++ b/drivers/power/supply/wm8350_power.c
@@ -182,7 +182,7 @@  static ssize_t charger_state_show(struct device *dev,
 	return sprintf(buf, "%s\n", charge);
 }
 
-static DEVICE_ATTR(charger_state, 0444, charger_state_show, NULL);
+static DEVICE_ATTR_RO(charger_state);
 
 static irqreturn_t wm8350_charger_handler(int irq, void *data)
 {