| From | Kamal Mostafa <> | Subject | [PATCH 3.13 079/162] ALSA: pcm: use the same dma mmap codepath both for arm and arm64 | Date | Thu, 6 Nov 2014 14:35:43 -0800 |
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3.13.11.11 -stable review patch. If anyone has any objections, please let me know.
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From: Anatol Pomozov <anatol.pomozov@gmail.com>
commit a011e213f3700233ed2a676f1ef0a74a052d7162 upstream.
This avoids following kernel crash when try to playback on arm64
[ 107.497203] [<ffffffc00046b310>] snd_pcm_mmap_data_fault+0x90/0xd4 [ 107.503405] [<ffffffc0001541ac>] __do_fault+0xb0/0x498 [ 107.508565] [<ffffffc0001576a0>] handle_mm_fault+0x224/0x7b0 [ 107.514246] [<ffffffc000092640>] do_page_fault+0x11c/0x310 [ 107.519738] [<ffffffc000081100>] do_mem_abort+0x38/0x98
Tested: backported to 3.14 and tried to playback on arm64 machine
Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- sound/core/pcm_native.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 01a5e05..566b0f6 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -3189,7 +3189,7 @@ static const struct vm_operations_struct snd_pcm_vm_ops_data_fault = { #ifndef ARCH_HAS_DMA_MMAP_COHERENT /* This should be defined / handled globally! */ -#ifdef CONFIG_ARM +#if defined(CONFIG_ARM) || defined(CONFIG_ARM64) #define ARCH_HAS_DMA_MMAP_COHERENT #endif #endif -- 1.9.1
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