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lineage_android_kernel_samsung_jf
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ALSA: pcm: use the same dma mmap codepath both for arm and arm64 

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: Zefan Li <lizefan@huawei.com>
This commit is contained in:
Anatol Pomozov 2014-10-17 12:43:34 -07:00 committed by Zefan Li
parent 6a16b0d080
commit 7a13f726f0
1 changed files with 1 additions and 1 deletions
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2
sound/core/pcm_native.c
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@ -3171,7 +3171,7 @@ 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