misc: mic: SCIF poll
SCIF poll allows both user and kernel mode clients to wait on
events on a SCIF endpoint. These events include availability of
space or data in the SCIF ring buffer, availability of connection
requests on a listening endpoint and completion of connections
when using async connects.
Reviewed-by: Nikhil Rao <nikhil.rao@intel.com>
Reviewed-by: Sudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/misc/mic/scif/scif_fd.c b/drivers/misc/mic/scif/scif_fd.c
index eccf7e7..24e47f7 100644
--- a/drivers/misc/mic/scif/scif_fd.c
+++ b/drivers/misc/mic/scif/scif_fd.c
@@ -34,6 +34,13 @@
return scif_close(priv);
}
+static unsigned int scif_fdpoll(struct file *f, poll_table *wait)
+{
+ struct scif_endpt *priv = f->private_data;
+
+ return __scif_pollfd(f, wait, priv);
+}
+
static int scif_fdflush(struct file *f, fl_owner_t id)
{
struct scif_endpt *ep = f->private_data;
@@ -193,6 +200,7 @@
spin_unlock(&scif_info.eplock);
/* Free the resources automatically created from the open. */
+ scif_anon_inode_fput(priv);
scif_teardown_ep(priv);
scif_add_epd_to_zombie_list(priv, !SCIF_EPLOCK_HELD);
f->private_data = newep;
@@ -298,6 +306,7 @@
.open = scif_fdopen,
.release = scif_fdclose,
.unlocked_ioctl = scif_fdioctl,
+ .poll = scif_fdpoll,
.flush = scif_fdflush,
.owner = THIS_MODULE,
};