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usb: gadget: u_uac1: Kill set_fs() usage

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With the new API to perform the in-kernel buffer copy, we can get rid
of set_fs() usage in this driver, finally.

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2017-05-21 10:19:16 +02:00
parent 6854121372
commit 66b5542e3a
1 changed files with 1 additions and 6 deletions
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7
drivers/usb/gadget/function/u_uac1.c
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@ -157,7 +157,6 @@ size_t u_audio_playback(struct gaudio *card, void *buf, size_t count)
struct gaudio_snd_dev *snd = &card->playback;
struct snd_pcm_substream *substream = snd->substream;
struct snd_pcm_runtime *runtime = substream->runtime;
mm_segment_t old_fs;
ssize_t result;
snd_pcm_sframes_t frames;
@ -174,15 +173,11 @@ try_again:
}
frames = bytes_to_frames(runtime, count);
old_fs = get_fs();
set_fs(KERNEL_DS);
result = snd_pcm_lib_write(snd->substream, (void __user *)buf, frames);
result = snd_pcm_kernel_write(snd->substream, buf, frames);
if (result != frames) {
ERROR(card, "Playback error: %d\n", (int)result);
set_fs(old_fs);
goto try_again;
}
set_fs(old_fs);
return 0;
}