sbp2: provide helptext for CONFIG_IEEE1394_SBP2_PHYS_DMA and mark it experimental
It appears I will not get it fixed overnight. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Signed-off-by: Ben Collins <bcollins@ubuntu.com>
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@ -128,8 +128,17 @@ config IEEE1394_SBP2
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1394 bus. SBP-2 devices include harddrives and DVD devices.
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config IEEE1394_SBP2_PHYS_DMA
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bool "Enable Phys DMA support for SBP2 (Debug)"
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depends on IEEE1394 && IEEE1394_SBP2
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bool "Enable replacement for physical DMA in SBP2"
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depends on IEEE1394 && IEEE1394_SBP2 && EXPERIMENTAL
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help
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This builds sbp2 for use with non-OHCI host adapters which do not
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support physical DMA or for when ohci1394 is run with phys_dma=0.
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Physical DMA is data movement without assistence of the drivers'
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interrupt handlers. This option includes the interrupt handlers
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that are required in absence of this hardware feature.
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This option is buggy and currently broken on some architectures.
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If unsure, say N.
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config IEEE1394_ETH1394
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tristate "Ethernet over 1394"
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