xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[libata] replace sata_settings with devslp_timing

Browse Source 
NCQ capability was used to check availability of SATA Settings page
from Identify Device Data Log, which contains DevSlp timing variables.
It does not work on some HDDs and leads to error messages.

IDENTIFY word 78 bit 5(Hardware Feature Control) can't work either
because it is only the sufficient condition of Identify Device data
log, not the necessary condition.

This patch replaced ata_device->sata_settings with ->devslp_timing
to only save DevSlp timing variables(8 bytes), instead of the whole
SATA Settings page(512 bytes).

Addresses https://bugzilla.kernel.org/show_bug.cgi?id=51881

Reported-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Shane Huang <shane.huang@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Shane Huang
2012-12-17 23:18:59 +08:00
committed by Jeff Garzik
parent 7f9c9f8e24
commit 803739d25c
4 changed files with 23 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
include/linux/libata.h
View File

@@ -652,8 +652,8 @@ struct ata_device {
u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
};
/* Identify Device Data Log (30h), SATA Settings (page 08h) */
u8 sata_settings[ATA_SECT_SIZE];
/* DEVSLP Timing Variables from Identify Device Data Log */
u8 devslp_timing[ATA_LOG_DEVSLP_SIZE];
/* error history */
int spdn_cnt;