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Date: Thu, 11 Apr 2002 09:15:54 +0800
From: Rex Tsai <chihchun@kalug.linux.org.tw>
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To: linux-kernel@vger.kernel.org, "Kevin P. Fleming" <kevin@labsysgrp.com>
Subject: [PATCH] Lost interrupt with HPT372A patch
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Hi, I have a HighPoint RocketRAID 133 host adapter
with HPT372A chipset. (firmware revision is 2.31)

When booting with 2.4.19-pre5-ac3, I get "hde lost interrupt".
My HD drive is

  hde: ST380021A, ATA DISK drive
  hde: 156301488 sectors (80026 MB) w/2048KiB Cache, CHS=155061/16/63

The patch below turned out the problem.

--- linux/drivers/ide/hpt366.c.old      Thu Apr 11 08:50:45 2002
+++ linux/drivers/ide/hpt366.c  Thu Apr 11 08:57:18 2002
@@ -1326,7 +1326,11 @@
        int adjust, i;
        u16 freq;
        u32 pll;
-       byte reg5bh;
+       byte reg5bh, reg5ah;
+
+        /* turn on interrupts */
+       pci_read_config_byte(dev, 0x5a, &reg5ah);
+       pci_write_config_byte(dev, 0x5a, ( reg5ah & ~0x10));

        /*
         * default to pci clock. make sure MA15/16 are set to output
-Rex