2008-11-29  Robert Millan  <address@hidden>

	* disk/ata.c (grub_ata_pciinit): Handle errors rised by
	grub_ata_device_initialize() calls.

Index: disk/ata.c
===================================================================
--- disk/ata.c	(revision 1929)
+++ disk/ata.c	(working copy)
@@ -542,6 +542,16 @@ grub_ata_pciinit (int bus, int device, i
 	{
 	  grub_ata_device_initialize (controller * 2 + i, 0, rega, regb);
 	  grub_ata_device_initialize (controller * 2 + i, 1, rega, regb);
+
+	  /* Most errors rised by grub_ata_device_initialize() are harmless.
+	     They just indicate this particular drive is not responding, most
+	     likely because it doesn't exist.  We might want to ignore specific
+	     error types here, instead of printing them.  */
+	  if (grub_errno)
+	    {
+	      grub_print_error ();
+	      grub_errno = GRUB_ERR_NONE;
+	    }
 	}
     }