Patch for Promise PDC20276

[Michel Bouissou <michel@bouissou.net>]

Hi there,

The patch that Arne Brutschy posted here (see 
http://www.cs.helsinki.fi/linux/linux-kernel/2003-22/0386.html) almost saved 
my life as it allowed me to understand why my 2.4.22 kernel didn't activate 
my Promise PDC20276 IDE controller properly.

(For the record, my kernel was displaying the following message at boot:
PDC20276: neither IDE port enabled (BIOS)
)

But this patch was only halfway satisfactory, as it enabled only one of my 2 
controller channels.

So I did a quick-and-dirty hack that gives the following patch, that allows 
activation of both channels of my PDC20276.

This might help others encountering the same problem...

========== CUT HERE ==========
--- drivers/ide/setup-pci.c.orig	2003-08-25 13:44:41.000000000 +0200
+++ drivers/ide/setup-pci.c	2003-10-26 20:35:49.000000000 +0100
@@ -577,7 +577,7 @@
 	ata_index_t index;
 	u8 tmp = 0;
 	ide_hwif_t *hwif, *mate = NULL;
-	static int secondpdc = 0;
+/* MiB	static int secondpdc = 0; */
 
 	index.all = 0xf0f0;
 
@@ -637,10 +637,10 @@
 		 * by the bios for raid purposes. 
 		 * Skip the normal "is it enabled" test for those.
 		 */
-		if (((d->vendor == PCI_VENDOR_ID_PROMISE) &&
+		if ((d->vendor == PCI_VENDOR_ID_PROMISE) &&
 		     ((d->device == PCI_DEVICE_ID_PROMISE_20262) ||
-		      (d->device == PCI_DEVICE_ID_PROMISE_20265))) &&
-		    (secondpdc++==1) && (port==1))
+		      (d->device == PCI_DEVICE_ID_PROMISE_20265) ||
+		      (d->device == PCI_DEVICE_ID_PROMISE_20276)))
 			goto controller_ok;
 			
 		if (e->reg && (pci_read_config_byte(dev, e->reg, &tmp) ||
========== CUT HERE ==========

Regards

-- 
Michel Bouissou <michel@bouissou.net> OpenPGP ID 0xDDE8AC6E