'\" t
.\"     Title: ata_down_xfermask_limit
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: April 2019
.\"    Manual: libata Core Internals
.\"    Source: Kernel Hackers Manual 4.9.168
.\"  Language: English
.\"
.TH "ATA_DOWN_XFERMASK_LI" "9" "April 2019" "Kernel Hackers Manual 4\&.9\&." "libata Core Internals"
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.SH "NAME"
ata_down_xfermask_limit \- adjust dev xfer masks downward
.SH "SYNOPSIS"
.HP \w'int\ ata_down_xfermask_limit('u
.BI "int ata_down_xfermask_limit(struct\ ata_device\ *\ " "dev" ", unsigned\ int\ " "sel" ");"
.SH "ARGUMENTS"
.PP
\fIdev\fR
.RS 4
Device to adjust xfer masks
.RE
.PP
\fIsel\fR
.RS 4
ATA_DNXFER_* selector
.RE
.SH "DESCRIPTION"
.PP
Adjust xfer masks of
\fIdev\fR
downward\&. Note that this function does not apply the change\&. Invoking
\fBata_set_mode\fR
afterwards will apply the limit\&.
.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