From: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
To: Richard Zhao <rizhao-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
Cc: "linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org"
<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
"linux-serial-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-serial-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org"
<gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>
Subject: Re: [PATCH 6/9] serial: tegra: move to generic dma DT binding
Date: Tue, 30 Jul 2013 10:46:42 -0600 [thread overview]
Message-ID: <51F7EDF2.60700@wwwdotorg.org> (raw)
In-Reply-To: <20130730033134.GM15855@rizhao-lap>
On 07/29/2013 09:31 PM, Richard Zhao wrote:
> On Sat, Jul 27, 2013 at 03:39:15AM +0800, Stephen Warren wrote:
>> On 07/23/2013 10:09 PM, Richard Zhao wrote:
>>> - driver: remove use of nvidia,dma-request-selector
>>> use dma_request_slave_channel to request channel
>>> - update binding doc
>>
>> This patch needs to be amended so that the DMA channel is looked up
>> during probe() rather than open(), to guarantee that deferred probe
>> works. It's possible to hold off probe, but not possible AFAIK to hold
>> off opening the port.
>
> How about avoid return -EPROBE_DEFER at open() time? It can be in
> another patch.
I don't really understand what you mean. -EPROBE_DEFER is something that
only makes sense for probe() to return (or functions used by probe()).
It doesn't make sense to return it anywhere else, since probe deferral
is something that can only happen for probe().
next prev parent reply other threads:[~2013-07-30 16:46 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-24 4:09 [PATCH 0/9] ARM: tegra: move to generic DMA DT binding Richard Zhao
2013-07-24 4:09 ` [PATCH 1/9] ARM: dts: add generic DMA DT binding for tegra apbdma Richard Zhao
[not found] ` <1374639002-16753-2-git-send-email-rizhao-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-07-26 19:21 ` Stephen Warren
[not found] ` <51F2CC30.5090200-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-07-30 2:54 ` Richard Zhao
2013-07-30 16:49 ` Stephen Warren
[not found] ` <51F7EE81.1060105-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-08-01 2:49 ` Richard Zhao
2013-07-24 4:09 ` [PATCH 2/9] dma: tegra20-apbdma: move to generic device tree bindings Richard Zhao
[not found] ` <1374639002-16753-3-git-send-email-rizhao-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-07-26 19:27 ` Stephen Warren
[not found] ` <51F2CDBE.40802-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-07-30 3:06 ` Richard Zhao
2013-07-30 16:44 ` Stephen Warren
[not found] ` <51F7ED62.4060404-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-07-31 3:52 ` Richard Zhao
2013-07-31 21:33 ` Stephen Warren
2013-07-24 4:09 ` [PATCH 3/9] spi: tegra114: move to generic dma DT binding Richard Zhao
2013-07-26 19:34 ` Stephen Warren
2013-07-30 3:15 ` Richard Zhao
2013-07-30 16:44 ` Stephen Warren
2013-07-24 4:09 ` [PATCH 4/9] spi: tegra20-slink: " Richard Zhao
2013-07-24 4:09 ` [PATCH 5/9] spi: tegra20-sflash: " Richard Zhao
[not found] ` <1374639002-16753-6-git-send-email-rizhao-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-07-26 19:36 ` Stephen Warren
[not found] ` <51F2CFAB.4000609-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-07-30 3:16 ` Richard Zhao
2013-07-24 4:09 ` [PATCH 6/9] serial: tegra: " Richard Zhao
2013-07-26 19:39 ` Stephen Warren
2013-07-26 19:41 ` Stephen Warren
[not found] ` <51F2D063.5010505-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-07-30 3:31 ` Richard Zhao
2013-07-30 16:46 ` Stephen Warren [this message]
2013-07-31 3:45 ` Richard Zhao
2013-07-31 21:32 ` Stephen Warren
[not found] ` <51F98275.6020906-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-08-01 3:30 ` Richard Zhao
2013-08-01 3:45 ` Stephen Warren
2013-07-24 4:10 ` [PATCH 7/9] ASoC: tegra: move to generic DMA " Richard Zhao
2013-07-24 6:58 ` Lars-Peter Clausen
[not found] ` <1374639002-16753-8-git-send-email-rizhao-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-07-26 19:58 ` Stephen Warren
[not found] ` <51F2D4DD.9060308-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-07-30 10:12 ` Richard Zhao
2013-07-30 16:54 ` Stephen Warren
2013-07-24 4:10 ` [PATCH 8/9] ARM: dts: tegra: remove legacy nvidia,dma-request-selector properties Richard Zhao
[not found] ` <1374639002-16753-9-git-send-email-rizhao-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-07-26 19:59 ` Stephen Warren
[not found] ` <51F2D525.7060605-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-07-30 10:16 ` Richard Zhao
2013-07-24 4:10 ` [PATCH 9/9] dma: tegra20-apbdma: remove legacy nvidia,dma-request-selector support Richard Zhao
2013-07-26 19:25 ` [PATCH 0/9] ARM: tegra: move to generic DMA DT binding Stephen Warren
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