On Wed, Dec 20, 2006 at 11:53:32AM +0100, Ingo Molnar wrote:
> Index: linux/arch/x86_64/kernel/pci-calgary.c
> ===================================================================
> --- linux.orig/arch/x86_64/kernel/pci-calgary.c
> +++ linux/arch/x86_64/kernel/pci-calgary.c
> @@ -1052,7 +1052,7 @@ void __init detect_calgary(void)
> void *tbl;
> int calgary_found = 0;
> unsigned long ptr;
> - int offset;
> + unsigned int offset, prev_offset;
> int ret;
>
> /*
> @@ -1071,15 +1071,20 @@ void __init detect_calgary(void)
> ptr = (unsigned long)phys_to_virt(get_bios_ebda());
>
> rio_table_hdr = NULL;
> + prev_offset = 0;
> offset = 0x180;
> - while (offset) {
> + /*
> + * The next offset is stored in the 1st word.
> + * Only parse up until the offset increases:
> + */
> + while (offset > prev_offset) {
> /* The block id is stored in the 2nd word */
> if (*((unsigned short *)(ptr + offset + 2)) == 0x4752){
> /* set the pointer past the offset & block id */
> rio_table_hdr = (struct rio_table_hdr *)(ptr + offset + 4);
> break;
> }
> - /* The next offset is stored in the 1st word. 0 means no more */
> + prev_offset = offset;
> offset = *((unsigned short *)(ptr + offset));
> }
> if (!rio_table_hdr) {
> -
Patch looks good to me, thanks. I'll give it a spin to verify.
Please CC me on Calgary patches.
Cheers,
Muli
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