Re: [PATCH 8/8] Input: input_event: fix struct padding on sparc64

Going through all uses of timeval, I noticed that we screwed up
input_event in the previous attempts to fix it:

The time fields now match between kernel and user space, but
all following fields are in the wrong place.

Add the required padding that is implied by the glibc timeval
definition to fix the layout, and add explicit initialization
to avoid leaking kernel stack data.

Cc: sparclinux@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>
Cc: stable@vger.kernel.org
Fixes: 141e5dcaa735 ("Input: input_event - fix the CONFIG_SPARC64 mixup")
Fixes: 2e746942ebac ("Input: input_event - provide override for sparc64")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/input/evdev.c       | 3 +++
 drivers/input/misc/uinput.c | 3 +++
 include/uapi/linux/input.h  | 1 +
 3 files changed, 7 insertions(+)

diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c
index d7dd6fcf2db0..24a90793caf0 100644
--- a/drivers/input/evdev.c
+++ b/drivers/input/evdev.c

@@ -228,6 +228,9 @@ static void __pass_event(struct evdev_client *client,
 						event->input_event_sec;
 		client->buffer[client->tail].input_event_usec =
 						event->input_event_usec;
+#ifdef CONFIG_SPARC64
+		client->buffer[client->tail].__pad = 0;
+#endif
 		client->buffer[client->tail].type = EV_SYN;
 		client->buffer[client->tail].code = SYN_DROPPED;
 		client->buffer[client->tail].value = 0;