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authorAdrian Schmutzler <freifunk@adrianschmutzler.de>2020-02-08 21:58:55 +0100
committerAdrian Schmutzler <freifunk@adrianschmutzler.de>2020-02-14 14:10:51 +0100
commit7d7aa2fd924c27829ec25f825481554dd81bce97 (patch)
tree658b87b89331670266163e522ea5fb52535633cb /target/linux/bcm27xx/patches-4.19/950-0298-staging-vc-sm-cma-Use-a-void-pointer-as-the-handle-w.patch
parente7bfda2c243e66a75ff966ba04c28b1590b5d24c (diff)
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brcm2708: rename target to bcm27xx
This change makes the names of Broadcom targets consistent by using the common notation based on SoC/CPU ID (which is used internally anyway), bcmXXXX instead of brcmXXXX. This is even used for target TITLE in make menuconfig already, only the short target name used brcm so far. Despite, since subtargets range from bcm2708 to bcm2711, it seems appropriate to use bcm27xx instead of bcm2708 (again, as already done for BOARDNAME). This also renames the packages brcm2708-userland and brcm2708-gpu-fw. Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de> Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/bcm27xx/patches-4.19/950-0298-staging-vc-sm-cma-Use-a-void-pointer-as-the-handle-w.patch')
-rw-r--r--target/linux/bcm27xx/patches-4.19/950-0298-staging-vc-sm-cma-Use-a-void-pointer-as-the-handle-w.patch111
1 files changed, 111 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0298-staging-vc-sm-cma-Use-a-void-pointer-as-the-handle-w.patch b/target/linux/bcm27xx/patches-4.19/950-0298-staging-vc-sm-cma-Use-a-void-pointer-as-the-handle-w.patch
new file mode 100644
index 0000000000..6a43d94d1a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-4.19/950-0298-staging-vc-sm-cma-Use-a-void-pointer-as-the-handle-w.patch
@@ -0,0 +1,111 @@
+From df84621e5bd5cc206d1039ce0880ccd0b325525b Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Tue, 29 Jan 2019 16:29:00 +0000
+Subject: [PATCH] staging: vc-sm-cma: Use a void* pointer as the handle
+ within the kernel
+
+The driver was using an unsigned int as the handle to the outside world,
+and doing a nasty cast to the struct dmabuf when handed it back.
+This breaks badly with a 64 bit kernel where the pointer doesn't fit
+in an unsigned int.
+
+Switch to using a void* within the kernel. Reality is that it is
+a struct dma_buf*, but advertising it as such to other drivers seems
+to encourage the use of it as such, and I'm not sure on the implications
+of that.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/staging/vc04_services/vc-sm-cma/vc_sm.c | 10 +++++-----
+ drivers/staging/vc04_services/vc-sm-cma/vc_sm_knl.h | 6 +++---
+ drivers/staging/vc04_services/vchiq-mmal/mmal-common.h | 2 +-
+ drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c | 2 +-
+ 4 files changed, 10 insertions(+), 10 deletions(-)
+
+--- a/drivers/staging/vc04_services/vc-sm-cma/vc_sm.c
++++ b/drivers/staging/vc04_services/vc-sm-cma/vc_sm.c
+@@ -745,7 +745,7 @@ static int bcm2835_vc_sm_cma_remove(stru
+ }
+
+ /* Get an internal resource handle mapped from the external one. */
+-int vc_sm_cma_int_handle(int handle)
++int vc_sm_cma_int_handle(void *handle)
+ {
+ struct dma_buf *dma_buf = (struct dma_buf *)handle;
+ struct vc_sm_buffer *res;
+@@ -762,7 +762,7 @@ int vc_sm_cma_int_handle(int handle)
+ EXPORT_SYMBOL_GPL(vc_sm_cma_int_handle);
+
+ /* Free a previously allocated shared memory handle and block. */
+-int vc_sm_cma_free(int handle)
++int vc_sm_cma_free(void *handle)
+ {
+ struct dma_buf *dma_buf = (struct dma_buf *)handle;
+
+@@ -772,7 +772,7 @@ int vc_sm_cma_free(int handle)
+ return -EPERM;
+ }
+
+- pr_debug("%s: handle %08x/dmabuf %p\n", __func__, handle, dma_buf);
++ pr_debug("%s: handle %p/dmabuf %p\n", __func__, handle, dma_buf);
+
+ dma_buf_put(dma_buf);
+
+@@ -781,7 +781,7 @@ int vc_sm_cma_free(int handle)
+ EXPORT_SYMBOL_GPL(vc_sm_cma_free);
+
+ /* Import a dmabuf to be shared with VC. */
+-int vc_sm_cma_import_dmabuf(struct dma_buf *src_dmabuf, int *handle)
++int vc_sm_cma_import_dmabuf(struct dma_buf *src_dmabuf, void **handle)
+ {
+ struct dma_buf *new_dma_buf;
+ struct vc_sm_buffer *res;
+@@ -801,7 +801,7 @@ int vc_sm_cma_import_dmabuf(struct dma_b
+ res = (struct vc_sm_buffer *)new_dma_buf->priv;
+
+ /* Assign valid handle at this time.*/
+- *handle = (int)new_dma_buf;
++ *handle = new_dma_buf;
+ } else {
+ /*
+ * succeeded in importing the dma_buf, but then
+--- a/drivers/staging/vc04_services/vc-sm-cma/vc_sm_knl.h
++++ b/drivers/staging/vc04_services/vc-sm-cma/vc_sm_knl.h
+@@ -17,12 +17,12 @@
+ #endif
+
+ /* Free a previously allocated or imported shared memory handle and block. */
+-int vc_sm_cma_free(int handle);
++int vc_sm_cma_free(void *handle);
+
+ /* Get an internal resource handle mapped from the external one. */
+-int vc_sm_cma_int_handle(int handle);
++int vc_sm_cma_int_handle(void *handle);
+
+ /* Import a block of memory into the GPU space. */
+-int vc_sm_cma_import_dmabuf(struct dma_buf *dmabuf, int *handle);
++int vc_sm_cma_import_dmabuf(struct dma_buf *dmabuf, void **handle);
+
+ #endif /* __VC_SM_KNL_H__INCLUDED__ */
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-common.h
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-common.h
+@@ -52,7 +52,7 @@ struct mmal_buffer {
+ struct mmal_msg_context *msg_context;
+
+ struct dma_buf *dma_buf;/* Exported dmabuf fd from videobuf2 */
+- int vcsm_handle; /* VCSM handle having imported the dmabuf */
++ void *vcsm_handle; /* VCSM handle having imported the dmabuf */
+ u32 vc_handle; /* VC handle to that dmabuf */
+
+ u32 cmd; /* MMAL command. 0=data. */
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
+@@ -1794,7 +1794,7 @@ int mmal_vchi_buffer_cleanup(struct mmal
+ if (buf->vcsm_handle) {
+ int ret;
+
+- pr_debug("%s: vc_sm_cma_free on handle %08X\n", __func__,
++ pr_debug("%s: vc_sm_cma_free on handle %p\n", __func__,
+ buf->vcsm_handle);
+ ret = vc_sm_cma_free(buf->vcsm_handle);
+ if (ret)