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authorOhad Ben-Cohen <ohad@wizery.com>2012-02-09 15:16:41 +0200
committerOhad Ben-Cohen <ohad@wizery.com>2012-02-28 19:09:54 +0200
commitfa2d7795b2e859574c86cf186e488d12178d51b3 (patch)
treeaf37a844c4531936e0236ead5d6a2ce80686d208 /drivers/rpmsg
parent9cd8eb433cbd440b25d4080b5add998da21fdb9c (diff)
downloadlinux-linaro-stable-fa2d7795b2e859574c86cf186e488d12178d51b3.tar.gz
rpmsg: fix name service endpoint leak
The name service endpoint wasn't destroyed, so fix it. This is achieved by introducing an internal __rpmsg_destroy_ept function which doesn't assume the given ept is bound to an rpmsg channel (much like the existing __rpmsg_create_ept). This is needed because the name service ept belongs to the rpmsg bus, and is never bound with a specific rpdev. Reported-by: Omar Ramirez Luna <omar.ramirez@ti.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Mark Grosen <mgrosen@ti.com> Cc: Suman Anna <s-anna@ti.com> Cc: Fernando Guzman Lugo <fernando.lugo@ti.com> Cc: Rob Clark <rob@ti.com> Cc: Ludovic BARRE <ludovic.barre@stericsson.com> Cc: Loic PALLARDY <loic.pallardy@stericsson.com> Cc: Omar Ramirez Luna <omar.ramirez@ti.com>
Diffstat (limited to 'drivers/rpmsg')
-rw-r--r--drivers/rpmsg/virtio_rpmsg_bus.c29
1 files changed, 23 insertions, 6 deletions
diff --git a/drivers/rpmsg/virtio_rpmsg_bus.c b/drivers/rpmsg/virtio_rpmsg_bus.c
index 8980ac2cc546..4db9cf8754a0 100644
--- a/drivers/rpmsg/virtio_rpmsg_bus.c
+++ b/drivers/rpmsg/virtio_rpmsg_bus.c
@@ -290,22 +290,36 @@ struct rpmsg_endpoint *rpmsg_create_ept(struct rpmsg_channel *rpdev,
EXPORT_SYMBOL(rpmsg_create_ept);
/**
- * rpmsg_destroy_ept() - destroy an existing rpmsg endpoint
+ * __rpmsg_destroy_ept() - destroy an existing rpmsg endpoint
+ * @vrp: virtproc which owns this ept
* @ept: endpoing to destroy
*
- * Should be used by drivers to destroy an rpmsg endpoint previously
- * created with rpmsg_create_ept().
+ * An internal function which destroy an ept without assuming it is
+ * bound to an rpmsg channel. This is needed for handling the internal
+ * name service endpoint, which isn't bound to an rpmsg channel.
+ * See also __rpmsg_create_ept().
*/
-void rpmsg_destroy_ept(struct rpmsg_endpoint *ept)
+static void
+__rpmsg_destroy_ept(struct virtproc_info *vrp, struct rpmsg_endpoint *ept)
{
- struct virtproc_info *vrp = ept->rpdev->vrp;
-
mutex_lock(&vrp->endpoints_lock);
idr_remove(&vrp->endpoints, ept->addr);
mutex_unlock(&vrp->endpoints_lock);
kfree(ept);
}
+
+/**
+ * rpmsg_destroy_ept() - destroy an existing rpmsg endpoint
+ * @ept: endpoing to destroy
+ *
+ * Should be used by drivers to destroy an rpmsg endpoint previously
+ * created with rpmsg_create_ept().
+ */
+void rpmsg_destroy_ept(struct rpmsg_endpoint *ept)
+{
+ __rpmsg_destroy_ept(ept->rpdev->vrp, ept);
+}
EXPORT_SYMBOL(rpmsg_destroy_ept);
/*
@@ -964,6 +978,9 @@ static void __devexit rpmsg_remove(struct virtio_device *vdev)
if (ret)
dev_warn(&vdev->dev, "can't remove rpmsg device: %d\n", ret);
+ if (vrp->ns_ept)
+ __rpmsg_destroy_ept(vrp, vrp->ns_ept);
+
idr_remove_all(&vrp->endpoints);
idr_destroy(&vrp->endpoints);