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authorJohn W. Linville <linville@tuxdriver.com>2005-10-18 21:30:59 -0400
committerJeff Garzik <jgarzik@pobox.com>2005-10-18 22:27:13 -0400
commit9f38c636ababfb41e58c9ec1e9719492ef7f0479 (patch)
tree52a0d64efd7a0f814dd327f2bd983a5c8260b1be /arch/m68k
parentdf49898a47061e82219c991dfbe9ac6ddf7a866b (diff)
[PATCH] b44: alternate allocation option for DMA descriptors
This is a (final?) hack to support the odd DMA allocation requirements of the b44 hardware. The b44 hardware has a 30-bit DMA mask. On x86, anything less than a 32-bit DMA mask forces allocations into the 16MB GFP_DMA range. The memory there is somewhat limited, often resulting in an inability to initialize the b44 driver. This hack uses streaming DMA allocation APIs in order to provide an alternative in case the GFP_DMA allocation fails. It is somewhat ugly, but not much worse than the similar existing hacks to support SKB allocations in the same driver. FWIW, I have received positive feedback on this from several Fedora users. Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Diffstat (limited to 'arch/m68k')
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