/* * u_uac1.h -- interface to USB gadget "ALSA AUDIO" utilities * * Copyright (C) 2008 Bryan Wu * Copyright (C) 2008 Analog Devices, Inc * * Enter bugs at http://blackfin.uclinux.org/ * * Licensed under the GPL-2 or later. */ #ifndef __U_AUDIO_H #define __U_AUDIO_H #include #include #include #include #include #include #include #define FILE_PCM_PLAYBACK "/dev/snd/pcmC0D0p" #define FILE_PCM_CAPTURE "/dev/snd/pcmC0D0c" #define FILE_CONTROL "/dev/snd/controlC0" #define UAC1_OUT_EP_MAX_PACKET_SIZE 200 #define UAC1_REQ_COUNT 256 #define UAC1_AUDIO_BUF_SIZE 48000 /* * This represents the USB side of an audio card device, managed by a USB * function which provides control and stream interfaces. */ struct gaudio_snd_dev { struct gaudio *card; struct file *filp; struct snd_pcm_substream *substream; int access; int format; int channels; int rate; }; struct gaudio { struct usb_function func; struct usb_gadget *gadget; /* ALSA sound device interfaces */ struct gaudio_snd_dev control; struct gaudio_snd_dev playback; struct gaudio_snd_dev capture; /* TODO */ }; struct f_uac1_opts { struct usb_function_instance func_inst; int req_buf_size; int req_count; int audio_buf_size; char *fn_play; char *fn_cap; char *fn_cntl; unsigned bound:1; unsigned fn_play_alloc:1; unsigned fn_cap_alloc:1; unsigned fn_cntl_alloc:1; struct mutex lock; int refcnt; }; int gaudio_setup(struct gaudio *card); void gaudio_cleanup(struct gaudio *the_card); size_t u_audio_playback(struct gaudio *card, void *buf, size_t count); int u_audio_get_playback_channels(struct gaudio *card); int u_audio_get_playback_rate(struct gaudio *card); #endif /* __U_AUDIO_H */ 8177f91b'>treecommitdiff
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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2017-02-03 17:10:28 +1100
committerMichael Ellerman <mpe@ellerman.id.au>2017-02-08 23:36:29 +1100
commitd7df2443cd5f67fc6ee7c05a88e4996e8177f91b (patch)
tree098a7c0ca4fceb8a65cb1f693c9d71990388933d /include/net/caif/caif_device.h
parenta0615a16f7d0ceb5804d295203c302d496d8ee91 (diff)
powerpc/mm: Fix spurrious segfaults on radix with autonuma
When autonuma (Automatic NUMA balancing) marks a PTE inaccessible it clears all the protection bits but leave the PTE valid. With the Radix MMU, an attempt at executing from such a PTE will take a fault with bit 35 of SRR1 set "SRR1_ISI_N_OR_G". It is thus incorrect to treat all such faults as errors. We should pass them to handle_mm_fault() for autonuma to deal with. The case of pages that are really not executable is handled by the existing test for VM_EXEC further down. That leaves us with catching the kernel attempts at executing user pages. We can catch that earlier, even before we do find_vma. It is never valid on powerpc for the kernel to take an exec fault to begin with. So fold that test with the existing test for the kernel faulting on kernel addresses to bail out early. Fixes: 1d18ad026844 ("powerpc/mm: Detect instruction fetch denied and report") Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Balbir Singh <bsingharora@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'include/net/caif/caif_device.h')