Subject: [PATCH v5 01/11] sound: Fix snd_pcm_readv()/writev() to use iov access functions

From: David Howells <[email-masked]>
Date: Wed, 20 Sep 2023 23:22:21 +0100

Fix snd_pcm_readv()/writev() to use iov access functions rather than poking
at the iov_iter internals directly.

Signed-off-by: David Howells <[email-masked]>
cc: Jaroslav Kysela <[email-masked]>
cc: Takashi Iwai <[email-masked]>
cc: Oswald Buddenhagen <[email-masked]>
cc: Jens Axboe <[email-masked]>
cc: Suren Baghdasaryan <[email-masked]>
cc: Kuninori Morimoto <[email-masked]>
cc: [email-masked]
---
 sound/core/pcm_native.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index bd9ddf412b46..9a69236fa207 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -3527,7 +3527,7 @@ static ssize_t snd_pcm_readv(struct kiocb *iocb, struct iov_iter *to)
 	if (runtime->state == SNDRV_PCM_STATE_OPEN ||
 	    runtime->state == SNDRV_PCM_STATE_DISCONNECTED)
 		return -EBADFD;
-	if (!to->user_backed)
+	if (!user_backed_iter(to))
 		return -EINVAL;
 	if (to->nr_segs > 1024 || to->nr_segs != runtime->channels)
 		return -EINVAL;
@@ -3567,7 +3567,7 @@ static ssize_t snd_pcm_writev(struct kiocb *iocb, struct iov_iter *from)
 	if (runtime->state == SNDRV_PCM_STATE_OPEN ||
 	    runtime->state == SNDRV_PCM_STATE_DISCONNECTED)
 		return -EBADFD;
-	if (!from->user_backed)
+	if (!user_backed_iter(from))
 		return -EINVAL;
 	if (from->nr_segs > 128 || from->nr_segs != runtime->channels ||
 	    !frame_aligned(runtime, iov->iov_len))