Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1282940
| From | Takashi Iwai <tiwai@suse.de> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [alsa-devel] [PATCH] ASoC: mediatek: Use current HW pointer for pointer callback |
| Date | 2015-12-03 12:10 +0100 |
| Message-ID | <qBzVT-4ak-1@gated-at.bofh.it> (permalink) |
| References | <qBwY2-21w-7@gated-at.bofh.it> <qByGu-3cm-25@gated-at.bofh.it> <qBzVT-4ak-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Thu, 03 Dec 2015 12:01:58 +0100, Mark Brown wrote: > > On Thu, Dec 03, 2015 at 10:41:38AM +0100, Takashi Iwai wrote: > > > While reading this patch, I wondered how regmap can be used safely in > > an irq-disabled context. Mark, do we have any API for that? > > We can use user supplied locks or spin_lock_irqsave(). I meant how to guarantee to make regmap_read() working in an already spin-locked context, typically in an irq handler? regmap_read() involves with the regcache and it may invoke kmalloc(). Takashi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
[PATCH] ASoC: mediatek: Use current HW pointer for pointer callback Koro Chen <koro.chen@mediatek.com> - 2015-12-03 09:00 +0100
Re: [alsa-devel] [PATCH] ASoC: mediatek: Use current HW pointer for pointer callback Takashi Iwai <tiwai@suse.de> - 2015-12-03 10:50 +0100
Re: [alsa-devel] [PATCH] ASoC: mediatek: Use current HW pointer for pointer callback Takashi Iwai <tiwai@suse.de> - 2015-12-03 12:10 +0100
Re: [alsa-devel] [PATCH] ASoC: mediatek: Use current HW pointer for pointer callback Koro Chen <koro.chen@mediatek.com> - 2015-12-03 12:40 +0100
Re: [alsa-devel] [PATCH] ASoC: mediatek: Use current HW pointer for pointer callback Mark Brown <broonie@kernel.org> - 2015-12-03 16:00 +0100
Re: [alsa-devel] [PATCH] ASoC: mediatek: Use current HW pointer for pointer callback Takashi Iwai <tiwai@suse.de> - 2015-12-03 16:40 +0100
Re: [alsa-devel] [PATCH] ASoC: mediatek: Use current HW pointer for pointer callback Mark Brown <broonie@kernel.org> - 2015-12-03 12:10 +0100
csiph-web