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| author | Greg Kroah-Hartman | 2015-07-22 20:09:23 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2015-07-25 01:14:43 +0200 |
| commit | c2939f41bca86d30388e6fa48e469a4e748b71e2 (patch) | |
| tree | 2919a71006ecc4b421b4683ac63f7ae1639bc0f7 /drivers/staging/greybus/loopback.c | |
| parent | greybus: operation: add completion work queue (diff) | |
| download | kernel-qcow2-linux-c2939f41bca86d30388e6fa48e469a4e748b71e2.tar.gz kernel-qcow2-linux-c2939f41bca86d30388e6fa48e469a4e748b71e2.tar.xz kernel-qcow2-linux-c2939f41bca86d30388e6fa48e469a4e748b71e2.zip | |
greybus: loopback: add poll support to the iteration_count sysfs file
This adds the ability to poll on "iteration_count" in sysfs and be woken
up when it changes, saving some cycles constantly hammering on the file
waiting for it to change.
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Tested-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Diffstat (limited to 'drivers/staging/greybus/loopback.c')
| -rw-r--r-- | drivers/staging/greybus/loopback.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/staging/greybus/loopback.c b/drivers/staging/greybus/loopback.c index 50eacd1e11a3..08f0bee198c2 100644 --- a/drivers/staging/greybus/loopback.c +++ b/drivers/staging/greybus/loopback.c @@ -141,7 +141,6 @@ gb_loopback_stats_attrs(throughput); gb_loopback_ro_attr(error, d); /* The current index of the for (i = 0; i < iteration_max; i++) loop */ gb_loopback_ro_attr(iteration_count, u); -/* TODO iteration_count might be better with the KOBJ_CHANGE event */ /* * Type of loopback message to send based on protocol type definitions @@ -406,6 +405,8 @@ static int gb_loopback_fn(void *data) if (gb->iteration_max) { if (gb->iteration_count < gb->iteration_max) { gb->iteration_count++; + sysfs_notify(&gb->connection->dev.kobj, NULL, + "iteration_count"); } else { gb->type = 0; continue; |