brcm2708: update to latest patches from RPi foundation

[openwrt/openwrt.git] / target / linux / brcm2708 / patches-4.19 / 950-0398-staging-bcm2835-audio-Use-coherent-device-buffers.patch

diff --git a/target/linux/brcm2708/patches-4.19/950-0398-staging-bcm2835-audio-Use-coherent-device-buffers.patch b/target/linux/brcm2708/patches-4.19/950-0398-staging-bcm2835-audio-Use-coherent-device-buffers.patch
deleted file mode 100644 (file)
index dfd4b97..0000000
--- a/target/linux/brcm2708/patches-4.19/950-0398-staging-bcm2835-audio-Use-coherent-device-buffers.patch
+++ /dev/null
@@ -1,61 +0,0 @@
-From 8a01a25d0ad7e9d06f64fddae871deb91c3988ac Mon Sep 17 00:00:00 2001
-From: Takashi Iwai <tiwai@suse.de>
-Date: Tue, 4 Sep 2018 17:58:54 +0200
-Subject: [PATCH] staging: bcm2835-audio: Use coherent device buffers
-
-commit ad29c6e6cbf6f2af7362b043adad51a3be3d39c7 upstream.
-
-The memory access to the pages allocated with
-SNDRV_DMA_TYPE_CONTINUOUS are basically non-coherent, and it becomes a
-problem when a process accesses via mmap.
-
-For the more consistent access, use the device coherent memory, just
-by replacing the call pattern in the allocator helpers.
-
-The only point we need to be careful for is the device object passed
-there; since bcm2835-audio driver creates fake devices and each card
-is created on top of that, we need to pass its parent device as the
-real device object.
-
-Signed-off-by: Takashi Iwai <tiwai@suse.de>
-Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
-Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
----
- .../vc04_services/bcm2835-audio/bcm2835-pcm.c        | 12 ++++++------
- 1 file changed, 6 insertions(+), 6 deletions(-)
-
---- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c
-+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c
-@@ -345,8 +345,8 @@ int snd_bcm2835_new_pcm(struct bcm2835_c
- 
-       /* pre-allocation of buffers */
-       /* NOTE: this may fail */
--      snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
--                                            snd_dma_continuous_data(GFP_KERNEL),
-+      snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
-+                                            chip->card->dev->parent,
-                                             snd_bcm2835_playback_hw.buffer_bytes_max,
-                                             snd_bcm2835_playback_hw.buffer_bytes_max);
- 
-@@ -371,8 +371,8 @@ int snd_bcm2835_new_spdif_pcm(struct bcm
- 
-       /* pre-allocation of buffers */
-       /* NOTE: this may fail */
--      snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
--              snd_dma_continuous_data(GFP_KERNEL),
-+      snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
-+              chip->card->dev->parent,
-               snd_bcm2835_playback_spdif_hw.buffer_bytes_max, snd_bcm2835_playback_spdif_hw.buffer_bytes_max);
- 
-       return 0;
-@@ -404,8 +404,8 @@ int snd_bcm2835_new_simple_pcm(struct bc
- 
-       snd_pcm_lib_preallocate_pages_for_all(
-               pcm,
--              SNDRV_DMA_TYPE_CONTINUOUS,
--              snd_dma_continuous_data(GFP_KERNEL),
-+              SNDRV_DMA_TYPE_DEV,
-+              chip->card->dev->parent,
-               snd_bcm2835_playback_hw.buffer_bytes_max,
-               snd_bcm2835_playback_hw.buffer_bytes_max);
-