lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[PATCH] libata: implement ap->sata_spd_limit and helpers

Browse Source 
ap->sata_spd_limit contrains SATA PHY speed of the port.  It is
initialized to the configured value prior to probing thus preserving
BIOS configured value.  hardreset is responsible for applying SPD
limit and sata_std_hardreset() is updated to do that.  SATA SPD limit
will be used to enhance failure handling during probing and later by
EH.

This patch also normalizes some comments around affected code.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo
2006-04-02 20:53:28 +09:00
committed by Jeff Garzik
parent 002c8054fa
commit 1c3fae4d7e
2 changed files with 140 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
include/linux/libata.h
View File

@@ -397,6 +397,7 @@ struct ata_port {
unsigned int mwdma_mask;
unsigned int udma_mask;
unsigned int cbl; /* cable type; ATA_CBL_xxx */
unsigned int sata_spd_limit; /* SATA PHY speed limit */
struct ata_device device[ATA_MAX_DEVICES];