'\" t
.\"     Title: sata_down_spd_limit
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: libata Core Internals
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "SATA_DOWN_SPD_LIMIT" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "libata Core Internals"
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.SH "NAME"
sata_down_spd_limit \- adjust SATA spd limit downward
.SH "SYNOPSIS"
.HP \w'int\ sata_down_spd_limit('u
.BI "int sata_down_spd_limit(struct\ ata_link\ *\ " "link" ", u32\ " "spd_limit" ");"
.SH "ARGUMENTS"
.PP
\fIlink\fR
.RS 4
Link to adjust SATA spd limit for
.RE
.PP
\fIspd_limit\fR
.RS 4
Additional limit
.RE
.SH "DESCRIPTION"
.PP
Adjust SATA spd limit of
\fIlink\fR
downward\&. Note that this function only adjusts the limit\&. The change must be applied using
\fBsata_set_spd\fR\&.
.PP
If
\fIspd_limit\fR
is non\-zero, the speed is limited to equal to or lower than
\fIspd_limit\fR
if such speed is supported\&. If
\fIspd_limit\fR
is slower than any supported speed, only the lowest supported speed is allowed\&.
.PP
LOCKING: Inherited from caller\&.
.SH "RETURN"
.PP
0 on success, negative errno on failure
.SH "AUTHOR"
.PP
\fBJeff Garzik\fR
.RS 4
Author.
.RE
.SH "COPYRIGHT"
.br