linux-arm-kernel.lists.infradead.org archive mirror
 help / color / mirror / Atom feed
From: andrew@lunn.ch (Andrew Lunn)
To: linux-arm-kernel@lists.infradead.org
Subject: Unconditional registering EMDA platform devices
Date: Fri, 24 Oct 2014 16:29:04 +0200	[thread overview]
Message-ID: <20141024142904.GC3142@lunn.ch> (raw)

Hi Matt

I've had a report of a Debian kernel running on a Marvell XP system
giving warnings:

[    0.114771] edma-dma-engine edma-dma-engine.0: Can't allocate PaRAM dummy slot
[    0.114794] edma-dma-engine: probe of edma-dma-engine.0 failed with error -5

These seem to be coming from drivers/dma/emda.c

That driver has a subsys_initcall(edma_init);

and the edma_init function is unconditionally registering a driver and
a platform device. For a multiarch kernel, this is not a good idea.

Please could you make this conditionally. Maybe look into the DT and
see if the DMA is needed on the platform?

Thanks
	Andrew

             reply	other threads:[~2014-10-24 14:29 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-10-24 14:29 Andrew Lunn [this message]
2014-10-24 16:14 ` Unconditional registering EMDA platform devices Arnd Bergmann
2014-10-25 18:48   ` Uwe Kleine-König
2014-10-25 18:57     ` Arnd Bergmann
2014-11-06 10:22       ` Sekhar Nori

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20141024142904.GC3142@lunn.ch \
    --to=andrew@lunn.ch \
    --cc=linux-arm-kernel@lists.infradead.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).