Jeff,

PATCH 1/3: "if condition" enhancement.

Changes:

    Modify __atapi_pio_bytes() to make the "if condition"
more robust, in case of something like (bytes > qc->nbytes),  (qc->cursg_ofs > sg->length) or
(count > bytes) happens.

Those conditions won't happen in the current libata code. Just to be safe  (paranoid).

For your review, thanks.

Albert

Signed-off-by: Albert Lee <albertcc@tw.ibm.com>