Messages in this thread Patch in this message |  | | From | Julia Lawall <> | Subject | [PATCH 12/15] ptp: use permission-specific DEVICE_ATTR variants | Date | Sat, 29 Oct 2016 21:37:06 +0200 |
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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(-)
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, \
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