Subject: [patch][0/9] ide: sanitize PIO code


Hi,

This patchkit:

- converts PIO code to use scatterlists instead of directly walking bios
- fixes longstanding 'data integrity on error' issue in non-taskfile PIO code
- unifies single/multiple PIO handling
- unifies taskfile/non-taskfile PIO handling
- removes bio walking code

Bartlomiej