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authorÁlvaro Fernández Rojas <noltari@gmail.com>2019-08-09 19:50:30 +0200
committerÁlvaro Fernández Rojas <noltari@gmail.com>2019-08-27 11:10:01 +0200
commit2340c646e6a5da658e114be2f721ff90853588d4 (patch)
treedf9744d2344e71e8c5d1b75c3e1528bc474313fe /target/linux/brcm2708/patches-4.19/950-0354-staging-mmal-vchiq-Always-return-the-param-size-from.patch
parent81d0da118694feb874f992093063a2852285d194 (diff)
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brcm2708: update to latest patches from RPi foundation
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0354-staging-mmal-vchiq-Always-return-the-param-size-from.patch')
-rw-r--r--target/linux/brcm2708/patches-4.19/950-0354-staging-mmal-vchiq-Always-return-the-param-size-from.patch38
1 files changed, 38 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0354-staging-mmal-vchiq-Always-return-the-param-size-from.patch b/target/linux/brcm2708/patches-4.19/950-0354-staging-mmal-vchiq-Always-return-the-param-size-from.patch
new file mode 100644
index 0000000000..de459236fc
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0354-staging-mmal-vchiq-Always-return-the-param-size-from.patch
@@ -0,0 +1,38 @@
+From 2e3718da526ecc343731733439626a16be7518ac Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Wed, 13 Feb 2019 12:36:56 +0000
+Subject: [PATCH 354/773] staging: mmal-vchiq: Always return the param size
+ from param_get
+
+mmal-vchiq is a reimplementation of the userland library for MMAL.
+When getting a parameter, the client provides the storage and
+the size of the storage. The VPU then returns the size of the
+parameter that it wished to return, and as much as possible of
+that parameter is returned to the client.
+
+The implementation previously only returned the size provided
+by the VPU should it exceed the buffer size. So for parameters
+such as the supported encodings list the client had no idea
+how much of the provided storage had been populated.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
+@@ -1413,11 +1413,12 @@ static int port_parameter_get(struct vch
+ */
+ memcpy(value, &rmsg->u.port_parameter_get_reply.value,
+ *value_size);
+- *value_size = rmsg->u.port_parameter_get_reply.size;
+ } else {
+ memcpy(value, &rmsg->u.port_parameter_get_reply.value,
+ rmsg->u.port_parameter_get_reply.size);
+ }
++ /* Always report the size of the returned parameter to the caller */
++ *value_size = rmsg->u.port_parameter_get_reply.size;
+
+ pr_debug("%s:result:%d component:0x%x port:%d parameter:%d\n", __func__,
+ ret, port->component->handle, port->handle, parameter_id);