From: Michael Buesch <mb@bu3sch.de>
To: Jesse Barnes <jbarnes@virtuousgeek.org>,
John Linville <linville@tuxdriver.com>
Cc: Andi Kleen <andi@firstfloor.org>,
David Miller <davem@davemloft.net>,
Alan Cox <alan@lxorguk.ukuu.org.uk>, Ingo Molnar <mingo@elte.hu>,
bcm43xx-dev@lists.berlios.de, linux-wireless@vger.kernel.org,
"linux-kernel" <linux-kernel@vger.kernel.org>
Subject: [PATCH 0/3] Add API for weak DMA masks
Date: Thu, 1 May 2008 16:38:15 +0200 [thread overview]
Message-ID: <200805011638.15910.mb@bu3sch.de> (raw)
This patchset adds API and one user for a "weak" dma_set_mask().
Weak means that it will fallback to smaller masks in case the
DMA subsystem rejects a big mask.
Currently such rejection may happen if the driver requests a 64bit
mask on a VIA machine, for example. dma_set_mask_weak() will fallback
to 32bit, in that case, and tell the caller about it by modifying the
passed mask.
I'm not sure how we should merge this patchset.
I'd suggest we merge it all through John Linville for 2.6.27, as the
only current user of the API is the b43 wireless driver.
We could split it and push the nonwireless parts to somebody else's tree,
but I'm not sure it's worth the trouble.
--
Greetings Michael.
next reply other threads:[~2008-05-01 14:45 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-01 14:38 Michael Buesch [this message]
2008-05-01 9:00 ` [PATCH 0/3] Add API for weak DMA masks Arjan van de Ven
2008-05-01 14:40 ` [PATCH 1/3] Add dma_set_mask_weak() API Michael Buesch
2008-05-01 16:20 ` Alan Cox
2008-05-01 17:11 ` Michael Buesch
2008-05-01 14:41 ` [PATCH 2/3] ssb: Add weak DMA-mask API Michael Buesch
2008-05-01 14:43 ` [PATCH 3/3] b43: Use the new " Michael Buesch
2008-05-01 15:36 ` [PATCH 0/3] Add API for weak DMA masks Christoph Hellwig
2008-05-01 15:42 ` Michael Buesch
2008-05-01 15:43 ` Christoph Hellwig
2008-05-01 15:47 ` Michael Buesch
2008-05-01 15:58 ` Christoph Hellwig
2008-05-01 16:07 ` Michael Buesch
2008-05-01 16:30 ` Jesse Barnes
2008-05-01 17:16 ` Michael Buesch
2008-05-01 17:22 ` Jesse Barnes
2008-05-01 17:25 ` Michael Buesch
2008-05-01 17:27 ` Jesse Barnes
2008-05-01 17:33 ` Michael Buesch
2008-05-01 16:29 ` Alan Cox
2008-05-01 21:39 ` David Miller
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