Fix wrong comparison in uiomux_phys_to_virt()

uio_map_phys_to_virt() returns a void pointer value or NULL, not unsigned long value -1. This patch fixes checking return value of uio_map_phys_to_virt() in uiomux_phys_to_virt().
kfish · Mar 19, 2010 · ce9b703 · ce9b703
1 parent 84b1be6
commit ce9b703
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/libuiomux/uiomux.c b/src/libuiomux/uiomux.c
@@ -657,12 +657,12 @@ uiomux_phys_to_virt(struct uiomux *uiomux, uiomux_resource_t blockmask,
 
 	if ((ret =
 	     uio_map_phys_to_virt(&block->uio->mem,
-				  phys_address)) != (unsigned long) -1)
+				  phys_address)) != NULL)
 		return ret;
 
 	if ((ret =
 	     uio_map_phys_to_virt(&block->uio->mmio,
-				  phys_address)) != (unsigned long) -1)
+				  phys_address)) != NULL)
 		return ret;
 
 	return NULL;