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wusbcore: dev-sysfs: use permission-specific DEVICE_ATTR variants

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Use DEVICE_ATTR_WO for write ony attributes and DEVICE_ATTR_RO for read
only attributes.  This simplifies the source code, improves readbility,
and reduces the chance of inconsistencies.

The semantic patch for the RO case 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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Julia Lawall 2016-10-29 21:36:55 +02:00 committed by Greg Kroah-Hartman
parent d79cda045e
commit 4d05564750
1 changed files with 3 additions and 3 deletions
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6
drivers/usb/wusbcore/dev-sysfs.c
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@ -53,7 +53,7 @@ static ssize_t wusb_disconnect_store(struct device *dev,
wusbhc_put(wusbhc);
return size;
}
static DEVICE_ATTR(wusb_disconnect, 0200, NULL, wusb_disconnect_store);
static DEVICE_ATTR_WO(wusb_disconnect);
static ssize_t wusb_cdid_show(struct device *dev,
struct device_attribute *attr, char *buf)
@ -69,7 +69,7 @@ static ssize_t wusb_cdid_show(struct device *dev,
wusb_dev_put(wusb_dev);
return result + 1;
}
static DEVICE_ATTR(wusb_cdid, 0444, wusb_cdid_show, NULL);
static DEVICE_ATTR_RO(wusb_cdid);
static ssize_t wusb_ck_store(struct device *dev,
struct device_attribute *attr,
@ -105,7 +105,7 @@ static ssize_t wusb_ck_store(struct device *dev,
wusbhc_put(wusbhc);
return result < 0 ? result : size;
}
static DEVICE_ATTR(wusb_ck, 0200, NULL, wusb_ck_store);
static DEVICE_ATTR_WO(wusb_ck);
static struct attribute *wusb_dev_attrs[] = {
&dev_attr_wusb_disconnect.attr,