openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

ide: fix registers loading order in ide_dump_ata_status() 

Fix registers loading order in ide_dump_ata_status()/ide_read_24().

Load registers in this order:
* IDE_SECTOR_REG
* IDE_LCYL_REG
* IDE_HCYL_REG
* IDE_SELECT_REG

It shouldn't affect anything (just a usual paranoia to separate changes
which change the way in which hardware is accessed from code cleanups).

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2008-01-25 22:17:17 +01:00
parent f6e29e35cc
commit d32444771b
2 changed files with 16 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/ide/ide-iops.c
View File

@ -160,9 +160,9 @@ EXPORT_SYMBOL(default_hwif_mmiops);
u32 ide_read_24 (ide_drive_t *drive)
{
u8 hcyl = HWIF(drive)->INB(IDE_HCYL_REG);
u8 lcyl = HWIF(drive)->INB(IDE_LCYL_REG);
u8 sect = HWIF(drive)->INB(IDE_SECTOR_REG);
u8 lcyl = HWIF(drive)->INB(IDE_LCYL_REG);
u8 hcyl = HWIF(drive)->INB(IDE_HCYL_REG);
return (hcyl<<16)|(lcyl<<8)|sect;
}

23
drivers/ide/ide-lib.c
View File

@ -524,19 +524,24 @@ static u8 ide_dump_ata_status(ide_drive_t *drive, const char *msg, u8 stat)
(unsigned long long) sectors,
high, low);
} else {
u8 cur = hwif->INB(IDE_SELECT_REG);
u8 sector, lcyl, hcyl, cur;
sector = hwif->INB(IDE_SECTOR_REG);
lcyl = hwif->INB(IDE_LCYL_REG);
hcyl = hwif->INB(IDE_HCYL_REG);
cur = hwif->INB(IDE_SELECT_REG);
if (cur & 0x40) { /* using LBA? */
printk(", LBAsect=%ld", (unsigned long)
((cur&0xf)<<24)
|(hwif->INB(IDE_HCYL_REG)<<16)
|(hwif->INB(IDE_LCYL_REG)<<8)
| hwif->INB(IDE_SECTOR_REG));
((cur & 0xf) << 24) |
(hcyl << 16) |
(lcyl << 8) |
sector);
} else {
printk(", CHS=%d/%d/%d",
(hwif->INB(IDE_HCYL_REG)<<8) +
hwif->INB(IDE_LCYL_REG),
cur & 0xf,
hwif->INB(IDE_SECTOR_REG));
(hcyl << 8) + lcyl,
cur & 0xf,
sector);
}
}
if (HWGROUP(drive) && HWGROUP(drive)->rq)