Hi Andre,
in pdc202xx_old.c is a bug that prevents the use of "66 Clocking". The driver
always falls back to UDMA 33. The reason for this bug is found in function
"config_chipset_for_dma" when checking if the "other" drive is capable of
UDMA 66. The follwing patch, which should apply against 2.4.22-pre7, solves
the problem for me:
--- pdc202xx_old.c.broken 2003-07-20 20:12:39.000000000 +0200
+++ pdc202xx_old.c 2003-07-20 20:18:50.000000000 +0200
@@ -425,7 +425,7 @@
* check to make sure drive on same channel
* is u66 capable
*/
- if (hwif->drives[!(drive->dn%2)].id) {
+ if (hwif->drives[!(drive->dn%2)].present) {
if (hwif->drives[!(drive->dn%2)].id->dma_ultra
& 0x0078) {
hwif->OUTB(CLKSPD | mask,
(hwif->dma_master + 0x11));
} else {
regards,
Jürgen
-
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This archive was generated by hypermail 2b29 : Wed Jul 23 2003 - 22:00:40 EST