From: Al Viro <viro@zeniv.linux.org.uk>
To: Takashi Iwai <tiwai@suse.de>
Cc: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 02/25] ALSA: pcm: Add copy ops with iov_iter
Date: Sat, 2 Sep 2023 06:30:44 +0100 [thread overview]
Message-ID: <20230902053044.GJ3390869@ZenIV> (raw)
In-Reply-To: <20230815190136.8987-3-tiwai@suse.de>
On Tue, Aug 15, 2023 at 09:01:13PM +0200, Takashi Iwai wrote:
> - if (copy_from_user(get_dma_ptr(substream->runtime, channel, hwoff),
> - (void __user *)buf, bytes))
> + if (!copy_from_iter(get_dma_ptr(substream->runtime, channel, hwoff),
> + bytes, iter))
The former is "if not everything got copied", the latter - "if nothing got
copied"; the same goes for other places like that.
next prev parent reply other threads:[~2023-09-02 5:35 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-15 19:01 [PATCH v2 00/25] ALSA: Generic PCM copy ops using iov_iter Takashi Iwai
2023-08-15 19:01 ` [PATCH v2 01/25] iov_iter: Export import_ubuf() Takashi Iwai
2023-08-15 19:01 ` [PATCH v2 02/25] ALSA: pcm: Add copy ops with iov_iter Takashi Iwai
2023-09-02 5:30 ` Al Viro [this message]
2023-09-02 6:00 ` Takashi Iwai
2023-08-15 19:01 ` [PATCH v2 03/25] ALSA: core: Add memory copy helpers between iov_iter and iomem Takashi Iwai
2023-08-15 19:01 ` [PATCH v2 04/25] ALSA: dummy: Convert to generic PCM copy ops Takashi Iwai
2023-08-15 19:01 ` [PATCH v2 05/25] ALSA: gus: " Takashi Iwai
2023-08-15 19:01 ` [PATCH v2 06/25] ALSA: emu8000: " Takashi Iwai
2023-09-02 5:36 ` Al Viro
2023-09-02 6:01 ` Takashi Iwai
2023-08-15 19:01 ` [PATCH v2 07/25] ALSA: es1938: " Takashi Iwai
2023-08-15 19:01 ` [PATCH v2 08/25] ALSA: korg1212: " Takashi Iwai
2023-08-15 19:01 ` [PATCH v2 09/25] ALSA: nm256: " Takashi Iwai
2023-08-15 19:01 ` [PATCH v2 10/25] ALSA: rme32: " Takashi Iwai
2023-08-15 19:01 ` [PATCH v2 11/25] ALSA: rme96: " Takashi Iwai
2023-08-15 19:01 ` [PATCH v2 12/25] ALSA: hdsp: " Takashi Iwai
2023-08-15 19:01 ` [PATCH v2 13/25] ALSA: rme9652: " Takashi Iwai
2023-08-15 19:01 ` [PATCH v2 14/25] ALSA: sh: " Takashi Iwai
2023-08-15 19:01 ` [PATCH v2 15/25] ALSA: xen: " Takashi Iwai
2023-08-15 19:01 ` [PATCH v2 16/25] ALSA: pcmtest: Update comment about " Takashi Iwai
2023-08-15 19:01 ` [PATCH v2 17/25] media: solo6x10: Convert to generic " Takashi Iwai
2023-08-18 7:48 ` Hans Verkuil
2023-08-15 19:01 ` [PATCH v2 18/25] ASoC: component: Add " Takashi Iwai
2023-08-15 19:01 ` [PATCH v2 19/25] ASoC: mediatek: Convert to " Takashi Iwai
2023-08-15 19:01 ` [PATCH v2 20/25] ASoC: qcom: " Takashi Iwai
2023-08-15 19:01 ` [PATCH v2 21/25] ASoC: dmaengine: " Takashi Iwai
2023-08-15 19:01 ` [PATCH v2 22/25] ASoC: dmaengine: Use iov_iter for process callback, too Takashi Iwai
2023-08-15 19:01 ` [PATCH v2 23/25] ALSA: doc: Update description for the new PCM copy ops Takashi Iwai
2023-08-15 19:01 ` [PATCH v2 24/25] ASoC: pcm: Drop obsoleted PCM copy_user ops Takashi Iwai
2023-08-15 19:01 ` [PATCH v2 25/25] ALSA: pcm: Drop obsoleted PCM copy_user and copy_kernel ops Takashi Iwai
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