Re: ac10 ide-cd oopses on boot

[s-jaschke@t-online.de (Stefan Jaschke)]

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On Friday 20 April 2001 00:49, J . A . Magallon wrote:
> Hi,
>
> Just built 2.4.3-ac10 and got an oops when booting. It tries to detect
> the CD and gives the oops.
> >>EIP; c01bfc7c <cdrom_get_entry+1c/50>   <=====

This appears to be a known problem. Jens Axboe sent a patch in a different
thread ("SD-W2002 DVD-RAM") that fixes this. I am including it
here for your convenience. (The patch is against 2.4.4-pre4 + Jens' 
latest fixes.) 

Stefan

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--- drivers/cdrom/cdrom.c~	Thu Apr 19 13:44:46 2001
+++ drivers/cdrom/cdrom.c	Thu Apr 19 13:45:33 2001
@@ -350,6 +350,12 @@
 {
 	int i, nr, foo;
 
+	if (!cdrom_numbers) {
+		int n_entries = CDROM_MAX_CDROMS / (sizeof(unsigned long) * 8);
+		cdrom_numbers = kmalloc(n_entries * sizeof(unsigned long), GFP_KERNEL);
+		memset(cdrom_numbers, 0, n_entries * sizeof(unsigned long));
+	}
+
 	nr = 0;
 	foo = -1;
 	for (i = 0; i < CDROM_MAX_CDROMS / (sizeof(unsigned long) * 8); i++) {
@@ -2696,10 +2702,6 @@
 
 static int __init cdrom_init(void)
 {
-	int n_entries = CDROM_MAX_CDROMS / (sizeof(unsigned long) * 8);
-
-	cdrom_numbers = kmalloc(n_entries * sizeof(unsigned long), GFP_KERNEL);
-
 #ifdef CONFIG_SYSCTL
 	cdrom_sysctl_register();
 #endif
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