LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Christoph Hellwig <hch@infradead.org>
To: jacopo mondi <jacopo@jmondi.org>
Cc: Christoph Hellwig <hch@infradead.org>,
	Jacopo Mondi <jacopo+renesas@jmondi.org>,
	ysato@users.sourceforge.jp, dalias@libc.org,
	thomas.petazzoni@free-electrons.com, robin.murphy@arm.com,
	geert@linux-m68k.org, linux-renesas-soc@vger.kernel.org,
	linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] sh: mm: Fix unprotected access to struct device
Date: Fri, 20 Apr 2018 01:31:47 -0700	[thread overview]
Message-ID: <20180420083147.GC31275@infradead.org> (raw)
In-Reply-To: <20180418131314.GC3999@w540>

On Wed, Apr 18, 2018 at 03:13:14PM +0200, jacopo mondi wrote:
> As long as it goes for arch/sh, the only user of dma_alloc_coherent()
> is platform_resource_setup_memory(), and it has been fixed by this
> patch.

Great!

> 
> Unfortunately, as Thomas pointed out, there are drivers which calls
> into this with the wrong 'struct device' as the sh_eth one he had fixed.

Yes, we'll need fixes there.  Other DMA ops implementations also look
at struct device, so they generally are buggy.

> I would then say that as long as it goes for the NULL case, we should be
> fine now.

Then I'd say skil that part, please.

  reply	other threads:[~2018-04-20  8:31 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-17 13:35 Jacopo Mondi
2018-04-17 13:54 ` Thomas Petazzoni
2018-04-17 13:59   ` jacopo mondi
2018-04-20  8:30   ` Christoph Hellwig
2018-04-17 14:04 ` Geert Uytterhoeven
2018-04-17 14:20   ` jacopo mondi
2018-04-18  9:13 ` Sergei Shtylyov
2018-04-18 10:47 ` Christoph Hellwig
2018-04-18 13:13   ` jacopo mondi
2018-04-20  8:31     ` Christoph Hellwig [this message]
2018-04-20  9:59       ` Geert Uytterhoeven
2018-04-20 14:56         ` Rich Felker
2018-05-02  7:41         ` jacopo mondi

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=20180420083147.GC31275@infradead.org \
    --to=hch@infradead.org \
    --cc=dalias@libc.org \
    --cc=geert@linux-m68k.org \
    --cc=jacopo+renesas@jmondi.org \
    --cc=jacopo@jmondi.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-renesas-soc@vger.kernel.org \
    --cc=linux-sh@vger.kernel.org \
    --cc=robin.murphy@arm.com \
    --cc=thomas.petazzoni@free-electrons.com \
    --cc=ysato@users.sourceforge.jp \
    --subject='Re: [PATCH] sh: mm: Fix unprotected access to struct device' \
    /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

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).