target/linux/brcm2708/patches-4.19/950-0360-staging-mmal-vchiq-If-the-VPU-returns-an-error-don-t.patch

   1 From 351eab98f47fae8172a91cb8d65237dd1fd41a11 Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.org>
   3 Date: Wed, 13 Feb 2019 12:51:03 +0000
   4 Subject: [PATCH 360/703] staging: mmal-vchiq: If the VPU returns an error,
   5  don't negate it
   6
   7 There is an enum for the errors that the VPU can return.
   8 port_parameter_get was negating that value, but also using -EINVAL
   9 from the Linux error codes.
  10 Pass the VPU error code as positive values. Should the function
  11 need to pass a Linux failure, then return that as negative.
  12
  13 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
  14 ---
  15  drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c | 3 ++-
  16  1 file changed, 2 insertions(+), 1 deletion(-)
  17
  18 --- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
  19 +++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
  20 @@ -1401,7 +1401,8 @@ static int port_parameter_get(struct vch
  21                 goto release_msg;
  22         }
  23
  24 -       ret = -rmsg->u.port_parameter_get_reply.status;
  25 +       ret = rmsg->u.port_parameter_get_reply.status;
  26 +
  27         /* port_parameter_get_reply.size includes the header,
  28          * whilst *value_size doesn't.
  29          */