Hello!
2.3.99-pre9 introduces massive changes in the IDE DMA support and breaks
support for my ALI 1543. The kernel complains about unknown partition
table, which probably means that the IDE driver reads bogus data.
The binary search shows that the following patch needs to be reverted:
===== cut here =====
diff -u --recursive --new-file v2.3.99-pre8/linux/drivers/ide/alim15x3.c linux/drivers/ide/alim15x3.c
--- v2.3.99-pre8/linux/drivers/ide/alim15x3.c Wed Apr 26 16:34:07 2000
+++ linux/drivers/ide/alim15x3.c Mon May 15 11:03:48 2000
@@ -629,7 +636,7 @@
* has 80-pin (from host view)
*/
pci_read_config_byte(dev, 0x4a, &tmpbyte);
- ata66 = (!(tmpbyte & ata66mask)) ? 0 : 1;
+ ata66 = (!(tmpbyte & ata66mask)) ? 1 : 0;
__restore_flags(flags);
return(ata66);
===== cut here =====
As far as I can see, this patch doesn't correspond anyhow with other
changes, so I believe that the above change might have been unintended.
Reverting this patch on 2.4.0-test1 fixes all the problems. UDMA is
supported for the hard drive.
My configuration: K6-II, RedHat-6.1, gcc-2.95.2, Fujitsu 13 GB, ALI 11543,
revision C1, CD-ROM HiVal 52x max.
Pavel Roskin
http://www.red-bean.com/~proski/
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