parisc: Firmware: Fix returned path for PDC_MODULE_FIND on older machines

Older machines (like my 715/64) don't correctly initialize the
device path when returning from the PDC_MODULE_FIND firmware call.
Work around that shortcoming by initializing the path with the
known values.

Signed-off-by: Helge Deller <deller@gmx.de>

diff --git a/arch/parisc/kernel/firmware.c b/arch/parisc/kernel/firmware.c
index c69f6d5..0423434 100644 (file)
--- a/arch/parisc/kernel/firmware.c
+++ b/arch/parisc/kernel/firmware.c
@@ -464,7 +464,8 @@ int pdc_system_map_find_mods(struct pdc_system_map_mod_info *pdc_mod_info,
        unsigned long flags;
 
        spin_lock_irqsave(&pdc_lock, flags);
-       retval = mem_pdc_call(PDC_SYSTEM_MAP, PDC_FIND_MODULE, __pa(pdc_result), 
+       memcpy(pdc_result2, mod_path, sizeof(*mod_path));
+       retval = mem_pdc_call(PDC_SYSTEM_MAP, PDC_FIND_MODULE, __pa(pdc_result),
                              __pa(pdc_result2), mod_index);
        convert_to_wide(pdc_result);
        memcpy(pdc_mod_info, pdc_result, sizeof(*pdc_mod_info));