From: Lauri Kasanen <cand@gmx.com>
To: Oliver Neukum <oneukum@suse.de>
Cc: jkosina@suse.cz, linux-input@vger.kernel.org,
linux-kernel@vger.kernel.org, ao2@ao2.it, AndrewD207@aol.com
Subject: Re: [PATCH] HID: sony: Enable Gasia third-party PS3 controllers
Date: Mon, 9 Feb 2015 20:44:14 +0200 [thread overview]
Message-ID: <20150209204414.a4d205be.cand@gmx.com> (raw)
In-Reply-To: <1423476481.10695.2.camel@linux-0dmf.site>
On Mon, 09 Feb 2015 11:08:01 +0100
Oliver Neukum <oneukum@suse.de> wrote:
> > + ret = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x02),
> > + buf2, sizeof(buf2),
> > + &transfered, USB_CTRL_SET_TIMEOUT);
>
> You cannot do this. Even for a single byte DMA on the stack is
> wrong. Not on all architectures it works at all and you violate
> the DMA constrainsts. You must use kmalloc().
Hi Oliver,
Does this still apply when using hid_hw_output_report?
- Lauri
next prev parent reply other threads:[~2015-02-09 18:42 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-07 13:48 Lauri Kasanen
2015-02-07 15:56 ` Benjamin Tissoires
2015-02-07 16:31 ` Antonio Ospite
2015-02-07 21:48 ` Lauri Kasanen
2015-03-19 10:26 ` David Herrmann
2015-02-09 10:08 ` Oliver Neukum
2015-02-09 18:44 ` Lauri Kasanen [this message]
2015-02-10 8:14 ` Oliver Neukum
2015-03-16 21:10 ` Pavel Machek
2015-03-16 21:37 ` Jiri Kosina
2015-03-19 9:14 ` Oliver Neukum
2015-03-19 9:38 ` Pavel Machek
2015-03-19 9:54 ` Oliver Neukum
2015-03-19 10:12 ` Pavel Machek
2015-03-19 10:29 ` Oliver Neukum
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