From: timur@freescale.com (Timur Tabi)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/4] ASoC: fsl: make fsl_ssi driver compilable on ARM/IMX
Date: Thu, 23 Feb 2012 11:04:59 -0600 [thread overview]
Message-ID: <4F4671BB.7060409@freescale.com> (raw)
In-Reply-To: <20120223165242.GB22562@n2100.arm.linux.org.uk>
Russell King - ARM Linux wrote:
> Is your readl() or readl_be() unordered then?
Yes. At least, it sure looks like it is.
> Wouldn't that be buggy
> between coherent DMA accesses and accessing, eg, a PCI peripheral to
> enable or read DMA status?
I think so.
We almost never use readl. I see that it is used in some places, but
honestly I can't see how it can be valid. For instance, the mpic driver
uses it in mpic_startup_ht_interrupt(). I don't understand how that's
valid, since there's nothing preventing the readl() from happening
*before* the writeb.
I'll have to ask around, because I'm sure I'm missing something.
--
Timur Tabi
Linux kernel developer at Freescale
next prev parent reply other threads:[~2012-02-23 17:04 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-23 6:47 [PATCH 1/4] ASoC: imx: let SND_MXC_SOC_FIQ select FIQ Shawn Guo
2012-02-23 6:47 ` [PATCH 2/4] ASoC: imx: move SND_SOC_AC97_BUS selection down to machine driver Shawn Guo
2012-02-23 6:47 ` [PATCH 3/4] ASoC: imx: initialize dma_params burstsize just in imx-ssi Shawn Guo
2012-02-23 6:47 ` [PATCH 4/4] ASoC: imx: separate imx-pcm bits from imx-ssi driver Shawn Guo
2012-02-23 14:48 ` [PATCH 0/4] ASoC: merge imx into fsl Shawn Guo
2012-02-23 14:48 ` [PATCH 1/4] ASoC: imx: add an explicit Kconfig option for imx-ssi driver Shawn Guo
2012-02-23 15:40 ` Timur Tabi
2012-02-24 1:28 ` Shawn Guo
2012-02-24 2:59 ` Tabi Timur-B04825
2012-02-24 3:37 ` Shawn Guo
2012-02-23 14:48 ` [PATCH 2/4] ASoC: fsl: separate SSI and DMA Kconfig options Shawn Guo
2012-02-23 14:48 ` [PATCH 3/4] ASoC: imx: merge sound/soc/imx into sound/soc/fsl Shawn Guo
2012-02-23 14:48 ` [PATCH 4/4] ASoC: fsl: make fsl_ssi driver compilable on ARM/IMX Shawn Guo
2012-02-23 15:24 ` Sergei Shtylyov
2012-02-23 15:44 ` Timur Tabi
2012-02-23 16:52 ` Russell King - ARM Linux
2012-02-23 17:04 ` Timur Tabi [this message]
2012-02-23 17:14 ` Russell King - ARM Linux
2012-02-23 19:01 ` [alsa-devel] " Trent Piepho
2012-02-24 21:29 ` Timur Tabi
2012-02-24 21:54 ` Russell King - ARM Linux
2012-02-24 22:00 ` Timur Tabi
2012-02-24 22:35 ` Russell King - ARM Linux
2012-02-24 23:05 ` Timur Tabi
2012-02-24 23:15 ` Russell King - ARM Linux
2012-02-24 23:22 ` Timur Tabi
2012-02-24 23:28 ` Russell King - ARM Linux
2012-02-24 23:38 ` Timur Tabi
2012-02-24 14:09 ` [PATCH 0/6] ASoC: a few cleanups on sound/soc/fsl Shawn Guo
2012-02-24 14:02 ` Mark Brown
2012-02-24 14:23 ` Shawn Guo
2012-02-24 14:17 ` Mark Brown
2012-02-24 23:21 ` Shawn Guo
2012-02-24 23:14 ` Timur Tabi
2012-02-25 0:03 ` Shawn Guo
2012-02-25 1:39 ` Tabi Timur-B04825
2012-02-25 10:17 ` Russell King - ARM Linux
2012-02-25 11:44 ` Mark Brown
2012-02-25 12:12 ` Russell King - ARM Linux
2012-02-25 13:58 ` Mark Brown
2012-02-25 12:16 ` Shawn Guo
2012-02-24 23:23 ` Russell King - ARM Linux
2012-02-25 0:06 ` Shawn Guo
2012-02-24 14:09 ` [PATCH 1/6] ASoC: fsl: correct get_dma_channel parameter name Shawn Guo
2012-02-27 20:27 ` Timur Tabi
2012-02-28 12:34 ` Mark Brown
2012-02-24 14:09 ` [PATCH 2/6] ASoC: fsl: align mpc8610_hpcd with p1022_ds on getting codec node Shawn Guo
2012-02-27 20:31 ` Timur Tabi
2012-02-28 12:35 ` Mark Brown
2012-02-24 14:09 ` [PATCH 3/6] ASoC: Remove unnecessary -codec from cs4270 driver name Shawn Guo
2012-02-27 21:21 ` Timur Tabi
2012-02-28 12:35 ` Mark Brown
2012-02-24 14:09 ` [PATCH 4/6] ASoC: fsl: create fsl_utils to accommodate the common functions Shawn Guo
2012-02-27 18:15 ` Timur Tabi
2012-02-27 21:36 ` Timur Tabi
2012-02-28 2:15 ` Shawn Guo
2012-02-28 2:15 ` Tabi Timur-B04825
2012-02-28 16:51 ` Timur Tabi
2012-02-24 14:09 ` [PATCH 5/6] ASoC: fsl: use platform_device_id table to match p1022_ds device Shawn Guo
2012-02-27 21:39 ` Timur Tabi
2012-02-27 21:39 ` Timur Tabi
2012-02-28 1:52 ` Shawn Guo
2012-02-24 14:09 ` [PATCH 6/6] ASoC: fsl: check property 'compatible' for the machine name Shawn Guo
2012-02-24 14:12 ` Mark Brown
2012-02-24 16:30 ` Timur Tabi
2012-02-25 0:09 ` Shawn Guo
2012-02-25 11:39 ` Mark Brown
2012-02-25 1:28 ` Shawn Guo
2012-02-25 11:42 ` Mark Brown
2012-02-25 13:09 ` Shawn Guo
2012-02-25 13:27 ` Mark Brown
2012-02-25 14:03 ` Tabi Timur-B04825
2012-02-24 16:32 ` Timur Tabi
2012-02-24 23:23 ` Shawn Guo
2012-02-24 23:22 ` Timur Tabi
2012-02-27 21:54 ` Timur Tabi
2012-02-28 1:50 ` Shawn Guo
2012-02-28 2:12 ` Tabi Timur-B04825
2012-02-28 3:13 ` Shawn Guo
2012-02-28 3:42 ` Tabi Timur-B04825
2012-02-28 5:35 ` Shawn Guo
2012-02-27 20:28 ` [PATCH 0/6] ASoC: a few cleanups on sound/soc/fsl Timur Tabi
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