Bartlomiej Zolnierkiewicz wrote:
Clear prefetch and postwrite for ATAPI devices instead of depending on BIOS.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
Acked-by: Sergei Shtylyov <sshtylyov@xxxxxxxxxxxxx>
Index: b/drivers/ide/pci/sis5513.c
===================================================================
--- a/drivers/ide/pci/sis5513.c
+++ b/drivers/ide/pci/sis5513.c
@@ -1,5 +1,5 @@
/*
- * linux/drivers/ide/pci/sis5513.c Version 0.29 Aug 1, 2007
+ * linux/drivers/ide/pci/sis5513.c Version 0.30 Aug 9, 2007
Oh, the driver turned 0.30! Insn't a time for party? ;-)
@@ -522,20 +522,19 @@ static void sis_program_timings(ide_driv
sis_ata133_program_timings(drive, mode);
}
-/* Enables per-drive prefetch and postwrite */
static void config_drive_art_rwp (ide_drive_t *drive)
{
ide_hwif_t *hwif = HWIF(drive);
struct pci_dev *dev = hwif->pci_dev;
-
u8 reg4bh = 0;
- u8 rw_prefetch = (0x11 << drive->dn);
+ u8 rw_prefetch = 0;
- if (drive->media != ide_disk)
- return;
pci_read_config_byte(dev, 0x4b, ®4bh);
- if ((reg4bh & rw_prefetch) != rw_prefetch)
+ if (drive->media == ide_disk)
+ rw_prefetch = 0x11 << drive->dn;
+
+ if ((reg4bh & (0x11 << drive->dn)) != rw_prefetch)
pci_write_config_byte(dev, 0x4b, reg4bh|rw_prefetch);
... except of | operator's style. ;-)
-
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