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author | Tejun Heo <tj@kernel.org> | 2010-05-10 21:41:33 +0200 |
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committer | Jeff Garzik <jgarzik@redhat.com> | 2010-05-19 19:31:29 +0200 |
commit | 8930ff254a3a80d4477c3391ade07d6dd2a036c7 (patch) | |
tree | 2c83672d48fbe306d6968f9f54b0d80fb736d5f9 /drivers/ata/sata_nv.c | |
parent | libata-sff: reorder SFF/BMDMA functions (diff) | |
download | linux-8930ff254a3a80d4477c3391ade07d6dd2a036c7.tar.xz linux-8930ff254a3a80d4477c3391ade07d6dd2a036c7.zip |
libata-sff: clean up inheritance in several drivers
1. pata_cmd640 is PIO only. Inherit from sff.
2. pata_macio is BMDMA. Inherit from bmdma and drop explicit
bmdma_mode_filter() setting.
3. In sata_mv, unlike mv5, mv6 is BMDMA. Inherit from bmdma and
don't clear ->post_internal_cmd().
4. bf54x and icside are quasi-BMDMA controllers which don't use the
standard BMDMA registers so they don't initialize bmdma_addr and
inherit from sff to avoid the default mode_filter which disables
DMA modes if bmdma_addr is not initialized.
For 2 and 3, this patch makes the drivers explicitly specify
->mode_filter to ATA_OP_NULL while inheriting from ata_bmdma_port_ops.
These will be removed by the next patch.
This patch makes all and only BMDMA drivers inherit from
ata_bmdma_port_ops to ease further SFF/BMDMA separation.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata/sata_nv.c')
0 files changed, 0 insertions, 0 deletions