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

ide: identify data word 53 bit 1 doesn't cover words 62 and 63 (take 3)

Browse Source 
The IDE code assumed for years that the bit 1 of the identify data word 53 also
covers the validity of the SW/MW DMA information in words 62 and 63, but it has
always covered only words 64 thru 70, with words 62 and 63 being defined in the
original ATA spec, not in ATA-2...

This fix however should only concern *very* old hard disks and rather old CF
cards...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Sergei Shtylyov
2009-03-31 20:15:27 +02:00
committed by Bartlomiej Zolnierkiewicz
parent 985232e388
commit 8d64fcd935
4 changed files with 19 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/ide/cs5530.c
View File

@@ -92,8 +92,7 @@ static u8 cs5530_udma_filter(ide_drive_t *drive)
if ((mateid[ATA_ID_FIELD_VALID] & 4) &&
(mateid[ATA_ID_UDMA_MODES] & 7))
goto out;
if ((mateid[ATA_ID_FIELD_VALID] & 2) &&
(mateid[ATA_ID_MWDMA_MODES] & 7))
if (mateid[ATA_ID_MWDMA_MODES] & 7)
mask = 0;
}
out: