suse man page for sata_scr_write

SATA_SCR_WRITE(9)						  libata Library						 SATA_SCR_WRITE(9)

NAME
       sata_scr_write - write SCR register of the specified port

SYNOPSIS
       int sata_scr_write(struct ata_link * link, int reg, u32 val);

ARGUMENTS
       link
	   ATA link to write SCR for

       reg
	   SCR to write

       val
	   value to write

DESCRIPTION
       Write val to SCR register reg of link. This function is guaranteed to succeed if link is ap->link, the cable type of the port is SATA and
       the port implements ->scr_read.

LOCKING
       None if link is ap->link. Kernel thread context otherwise.

RETURNS
       0 on success, negative errno on failure.

AUTHOR
       Jeff Garzik
	   Author.

COPYRIGHT
Kernel Hackers Manual 2.6.					     July 2010							 SATA_SCR_WRITE(9)