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Re: [PATCH] usb/mcs7830: Don't use buffers from stack for USB transfers

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From: Arnd Bergmann
Subject: Re: [PATCH] usb/mcs7830: Don't use buffers from stack for USB transfers
Date: Tuesday, January 20, 2009 - 3:45 pm

On Tuesday 20 January 2009, you wrote:

Have you observed problems with this, or just suspected trouble?

When I wrote this code, I looked at other code doing the same
and assumed it was ok, because usb_control_msg waits for the
DMA to complete before returning.

Is the problem only on systems that have noncoherent DMA, or
something else?


I was about to say that you should have Cc:'d me, but then I noticed
that I'm not listed in the driver as maintainer, nor in the MAINTAINERS
file, so I can't really complain here ;-)

	Arnd <><
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Messages in current thread:
[PATCH] usb/mcs7830: Don't use buffers from stack for USB ..., Christian Eggers, (Tue Jan 20, 1:29 pm)
Re: [PATCH] usb/mcs7830: Don't use buffers from stack for ..., David Miller, (Tue Jan 20, 1:32 pm)
Re: [PATCH] usb/mcs7830: Don't use buffers from stack for ..., Arnd Bergmann, (Tue Jan 20, 3:45 pm)
Re: [PATCH] usb/mcs7830: Don't use buffers from stack for ..., David Miller, (Tue Jan 20, 3:47 pm)
Re: [PATCH] usb/mcs7830: Don't use buffers from stack for ..., Oliver Neukum, (Tue Jan 20, 3:50 pm)
Re: [PATCH] usb/mcs7830: Don't use buffers from stack for ..., Arnd Bergmann, (Tue Jan 20, 4:17 pm)
Re: [PATCH] usb/mcs7830: Don't use buffers from stack for ..., David Miller, (Tue Jan 20, 4:23 pm)
Re: [PATCH] usb/mcs7830: Don't use buffers from stack for ..., Oliver Neukum, (Tue Jan 20, 4:28 pm)
Re: [PATCH] usb/mcs7830: Don't use buffers from stack for ..., Oliver Neukum, (Tue Jan 20, 4:36 pm)
Re: [PATCH] usb/mcs7830: Don't use buffers from stack for ..., Arnd Bergmann, (Tue Jan 20, 4:37 pm)
Re: [PATCH] usb/mcs7830: Don't use buffers from stack for ..., David Miller, (Tue Jan 20, 4:39 pm)