b43: Workaround DMA quirks

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Some mainboards/CPUs don't allow DMA masks bigger than a certain limit.
Some VIA crap^h^h^h^hdevices have an upper limit of 0xFFFFFFFF. So in this
case a 64-bit b43 device would always fail to acquire the mask.
Implement a workaround to fallback to lower DMA mask, as we can always
also support a lower mask.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

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Michael Buesch 2008-04-23 19:13:01 +02:00 • committed by John W. Linville

parent 0da926f057

commit 1033b3ea11

1 changed files with 39 additions and 8 deletions

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drivers/net/wireless/b43/dma.c

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