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SubjectRe: [PATCH] 2.5.13 IDE PIO mode Fix
    I found this bug in 2.5.10 first. And caused ext2 FS corruption.
We are porting Linux to PC-9801 architecture (made by NEC Japan).
It has PIO ONLY IDE I/F. So please check PIO mode too.
# Our porting status - 2.2.x/2.4.x done and updating. 2.5.x partial.

diff -urN linux-2.5.10/drivers/ide/ide-taskfile.c linux/drivers/ide/ide-taskfile.c
--- linux-2.5.10/drivers/ide/ide-taskfile.c Wed Apr 24 16:15:19 2002
+++ linux/drivers/ide/ide-taskfile.c Fri Apr 26 15:44:42 2002
@@ -202,7 +202,7 @@
ata_write_slow(drive, buffer, wcount);
else
#endif
- ata_write_16(drive, buffer, wcount<<1);
+ ata_write_16(drive, buffer, wcount);
}
}

Excellent!
It was introduced in 2.5.9 and still exists in 2.5.13,
and caused superblock corruption for me. This fixes it.

Andries
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