target/linux/bcm27xx/patches-5.15/950-0133-staging-mmal-vchiq-Fix-client_component-for-64-bit-k.patch

   1 From ad99dc8a0f71efaa3c97669f77214d43f6f0120c Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.org>
   3 Date: Tue, 22 Jan 2019 12:04:09 +0000
   4 Subject: [PATCH] staging: mmal-vchiq: Fix client_component for 64 bit
   5  kernel
   6
   7 The MMAL client_component field is used with the event
   8 mechanism to allow the client to identify the component for
   9 which the event is generated.
  10 The field is only 32bits in size, therefore we can't use a
  11 pointer to the component in a 64 bit kernel.
  12
  13 Component handles are already held in an array per VCHI
  14 instance, so use the array index as the client_component handle
  15 to avoid having to create a new IDR for this purpose.
  16
  17 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
  18 ---
  19  drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c | 4 ++--
  20  1 file changed, 2 insertions(+), 2 deletions(-)
  21
  22 --- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
  23 +++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
  24 @@ -460,9 +460,9 @@ buffer_from_host(struct vchiq_mmal_insta
  25  static void event_to_host_cb(struct vchiq_mmal_instance *instance,
  26                              struct mmal_msg *msg, u32 msg_len)
  27  {
  28 -       /* FIXME: Not going to work on 64 bit */
  29 +       int comp_idx = msg->u.event_to_host.client_component;
  30         struct vchiq_mmal_component *component =
  31 -               (struct vchiq_mmal_component *)msg->u.event_to_host.client_component;
  32 +                                       &instance->component[comp_idx];
  33         struct vchiq_mmal_port *port = NULL;
  34         struct mmal_msg_context *msg_context;
  35         u32 port_num = msg->u.event_to_host.port_num;