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author | Sergei Shtylyov <sshtylyov@ru.mvista.com> | 2009-02-15 23:30:38 +0400 |
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committer | Jeff Garzik <jgarzik@redhat.com> | 2009-06-10 07:50:16 -0400 |
commit | 2102d7497393e982bf38ffe8f5fd3d487104880d (patch) | |
tree | 9693052c22db544384d433e95052d50779377c4a /sound/ppc/tumbler.c | |
parent | 4da646b7b52552f3b43eae27ffa5aa2c200f6db6 (diff) |
libata-sff: avoid byte swapping in ata_sff_data_xfer()
Handling of the trailing byte in ata_sff_data_xfer() is suboptimal bacause:
- it always initializes the padding buffer to 0 which is not really needed in
both the read and write cases;
- it has to use memcpy() to transfer a single byte from/to the padding buffer;
- it uses io{read|write}16() accessors which swap bytes on the big endian CPUs
and so have to additionally convert the data from/to the little endian format
instead of using io{read|write}16_rep() accessors which are not supposed to
change the byte ordering.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'sound/ppc/tumbler.c')
0 files changed, 0 insertions, 0 deletions