This is a note to let you know that I've just added the patch titled
staging: greybus: add host device function pointer checks
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
staging-greybus-add-host-device-function-pointer-checks.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Sun Nov 19 11:32:28 CET 2017
From: Jason Hrycay <jhrycay@xxxxxxxxx>
Date: Tue, 20 Dec 2016 14:49:27 -0600
Subject: staging: greybus: add host device function pointer checks
From: Jason Hrycay <jhrycay@xxxxxxxxx>
[ Upstream commit f05a88a39c5b5f226e08e626998bb920723b7d85 ]
Add sanity checks for cport_quiesce and cport_clear before invoking the
callbacks as these function pointers are not required during the host
device registration. This follows the logic implemented elsewhere for
various other function pointers.
Signed-off-by: Jason Hrycay <jhrycay@xxxxxxxxx>
Reviewed-by: Bryan O'Donoghue <pure.logic@xxxxxxxxxxxxxxxxx>
Acked-by: Johan Hovold <johan@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/greybus/connection.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/drivers/staging/greybus/connection.c
+++ b/drivers/staging/greybus/connection.c
@@ -357,6 +357,9 @@ static int gb_connection_hd_cport_quiesc
size_t peer_space;
int ret;
+ if (!hd->driver->cport_quiesce)
+ return 0;
+
peer_space = sizeof(struct gb_operation_msg_hdr) +
sizeof(struct gb_cport_shutdown_request);
@@ -380,6 +383,9 @@ static int gb_connection_hd_cport_clear(
struct gb_host_device *hd = connection->hd;
int ret;
+ if (!hd->driver->cport_clear)
+ return 0;
+
ret = hd->driver->cport_clear(hd, connection->hd_cport_id);
if (ret) {
dev_err(&hd->dev, "%s: failed to clear host cport: %d\n",
Patches currently in stable-queue which might be from jhrycay@xxxxxxxxx are
queue-4.9/staging-greybus-add-host-device-function-pointer-checks.patch