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Subject[PATCH 17/36] PTP: convert class code to use dev_groups
Date
The dev_attrs field of struct class is going away soon, dev_groups
should be used instead. This converts the ptp class code to use the
correct field.

Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

Richard, feel free to take this through your tree, or ACK it and I can take it
through mine.

drivers/ptp/ptp_clock.c | 2 +-
drivers/ptp/ptp_private.h | 2 +-
drivers/ptp/ptp_sysfs.c | 51 +++++++++++++++++++++++++++--------------------
3 files changed, 31 insertions(+), 24 deletions(-)

diff --git a/drivers/ptp/ptp_clock.c b/drivers/ptp/ptp_clock.c
index 4a8c3883..a8319b26 100644
--- a/drivers/ptp/ptp_clock.c
+++ b/drivers/ptp/ptp_clock.c
@@ -330,7 +330,7 @@ static int __init ptp_init(void)
goto no_region;
}

- ptp_class->dev_attrs = ptp_dev_attrs;
+ ptp_class->dev_groups = ptp_groups;
pr_info("PTP clock support registered\n");
return 0;

diff --git a/drivers/ptp/ptp_private.h b/drivers/ptp/ptp_private.h
index 69d32070..df03f2e3 100644
--- a/drivers/ptp/ptp_private.h
+++ b/drivers/ptp/ptp_private.h
@@ -84,7 +84,7 @@ uint ptp_poll(struct posix_clock *pc,
* see ptp_sysfs.c
*/

-extern struct device_attribute ptp_dev_attrs[];
+extern const struct attribute_group *ptp_groups[];

int ptp_cleanup_sysfs(struct ptp_clock *ptp);

diff --git a/drivers/ptp/ptp_sysfs.c b/drivers/ptp/ptp_sysfs.c
index 2f93926a..13ec5311 100644
--- a/drivers/ptp/ptp_sysfs.c
+++ b/drivers/ptp/ptp_sysfs.c
@@ -27,36 +27,43 @@ 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);

-#define PTP_SHOW_INT(name) \
-static ssize_t name##_show(struct device *dev, \
+#define PTP_SHOW_INT(name, var) \
+static ssize_t var##_show(struct device *dev, \
struct device_attribute *attr, char *page) \
{ \
struct ptp_clock *ptp = dev_get_drvdata(dev); \
- return snprintf(page, PAGE_SIZE-1, "%d\n", ptp->info->name); \
-}
-
-PTP_SHOW_INT(max_adj);
-PTP_SHOW_INT(n_alarm);
-PTP_SHOW_INT(n_ext_ts);
-PTP_SHOW_INT(n_per_out);
-PTP_SHOW_INT(pps);
+ return snprintf(page, PAGE_SIZE-1, "%d\n", ptp->info->var); \
+} \
+static DEVICE_ATTR(name, 0444, var##_show, NULL);
+
+PTP_SHOW_INT(max_adjustment, max_adj);
+PTP_SHOW_INT(n_alarms, n_alarm);
+PTP_SHOW_INT(n_external_timestamps, n_ext_ts);
+PTP_SHOW_INT(n_periodic_outputs, n_per_out);
+PTP_SHOW_INT(pps_available, pps);
+
+static struct attribute *ptp_attrs[] = {
+ &dev_attr_clock_name.attr,
+ &dev_attr_max_adjustment.attr,
+ &dev_attr_n_alarms.attr,
+ &dev_attr_n_external_timestamps.attr,
+ &dev_attr_n_periodic_outputs.attr,
+ &dev_attr_pps_available.attr,
+ NULL,
+};

-#define PTP_RO_ATTR(_var, _name) { \
- .attr = { .name = __stringify(_name), .mode = 0444 }, \
- .show = _var##_show, \
-}
+static const struct attribute_group ptp_group = {
+ .attrs = ptp_attrs,
+};

-struct device_attribute ptp_dev_attrs[] = {
- PTP_RO_ATTR(clock_name, clock_name),
- PTP_RO_ATTR(max_adj, max_adjustment),
- PTP_RO_ATTR(n_alarm, n_alarms),
- PTP_RO_ATTR(n_ext_ts, n_external_timestamps),
- PTP_RO_ATTR(n_per_out, n_periodic_outputs),
- PTP_RO_ATTR(pps, pps_available),
- __ATTR_NULL,
+const struct attribute_group *ptp_groups[] = {
+ &ptp_group,
+ NULL,
};

+
static ssize_t extts_enable_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
--
1.8.3.rc0.20.gb99dd2e


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