Fix gcc-6 warnings

* ddb/db_elf.c (elf_db_sym_init): Turn `i' into unsigned.
* device/ds_routines.c (ds_device_open, device_writev_trap): Likewise.
* i386/i386/user_ldt.c (i386_set_ldt): Likewise for `i', `min_selector', and
`first_desc'.
(i386_get_ldt): Likewise for `ldt_count'.
(user_ldt_free): Likewise for `i'.
* i386/i386/xen.h (hyp_set_ldt): Turn `count' into unsigned long.
* i386/intel/pmap.c (pmap_bootstrap): Turn `i', `j' and 'n' into unsigned.
(pmap_clear_bootstrap_pagetable): Likewise for `i' and `j'.
* ipc/ipc_kmsg.c (ipc_msg_print): Turn `i' and `numwords' into unsigned.
* kern/boot_script.c (boot_script_parse_line): Likewise for `i'.
* kern/bootstrap.c (bootstrap_create): Likewise for `n' and `i'.
* kern/host.c (host_processors): Likewise for `i'.
* kern/ipc_tt.c (mach_ports_register): Likewise.
* kern/mach_clock.c (tickadj, bigadj): turn into unsigned.
* kern/processor.c (processor_set_things): Turn `i' into unsigned.
* kern/task.c (task_threads): Likewise.
* kern/thread.c (consider_thread_collect, stack_init): Likewise.
* kern/strings.c (memset): Turn `i' into size_t.
* vm/memory_object.c (memory_object_lock_request): Turn `i' into unsigned.
* xen/block.c (hyp_block_init): Use %u format for evt.
(device_open): Drop unused err variable.
(device_write): Turn `copy_npages', `i', `nbpages', and `j' into unsigned.
* xen/console.c (hypcnread, hypcnwrite, hypcnclose): Turn dev to dev_t.
(hypcnclose): Return void.
* xen/console.h (hypcnread, hypcnwrite, hypcnclose): Fix prototypes
accordingly.
* xen/evt.c (form_int_mask): Turn `i' into int.
* xen/net.c (hyp_net_init): Use %u format for evt.
(device_open): Remove unused `err' variable.

1 files changed, 2 insertions, 2 deletions

diff --git a/xen/net.c b/xen/net.c
index 7181d780..5a3f90d9 100644
--- a/xen/net.c
+++ b/xen/net.c
@@ -395,7 +395,7 @@ void hyp_net_init(void) {
 
 			/* Allocate an event channel and give it to backend.  */
 			nd->evt = evt = hyp_event_channel_alloc(domid);
-			i = sprintf(port_name, "%lu", evt);
+			i = sprintf(port_name, "%u", evt);
 			c = hyp_store_write(t, port_name, 5, VIF_PATH, "/", vifs[n], "/", "event-channel");
 			if (!c)
 				panic("eth: couldn't store event channel for VIF %s (%s)", vifs[n], hyp_store_error);
@@ -538,7 +538,7 @@ static io_return_t
 device_open (ipc_port_t reply_port, mach_msg_type_name_t reply_port_type,
 	    dev_mode_t mode, char *name, device_t *devp /* out */)
 {
-	int i, n, err = 0;
+	int i, n;
 	ipc_port_t port, notify;
 	struct net_data *nd;