Re: [PATCH 2/2 resend] libata-sff: avoid byte swapping in ata_sff_data_xfer()

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Hello, I wrote:

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@xxxxxxxxxxxxx>

  Jeff, have you forgotten about this one?

   PING.

MBR, Sergei
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