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authorSergei Shtylyov <sshtylyov@ru.mvista.com>2009-02-15 23:30:38 +0400
committerJeff Garzik <jgarzik@redhat.com>2009-06-10 07:50:16 -0400
commit2102d7497393e982bf38ffe8f5fd3d487104880d (patch)
tree9693052c22db544384d433e95052d50779377c4a /lib
parent4da646b7b52552f3b43eae27ffa5aa2c200f6db6 (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 'lib')
0 files changed, 0 insertions, 0 deletions