isdn/gigaset: unify function return values
Various functions in the Gigaset driver were using different
conventions for the meaning of their int return values.
Align them to the usual negative error numbers convention.
Inspired-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/isdn/gigaset/bas-gigaset.c b/drivers/isdn/gigaset/bas-gigaset.c
index d651523..3b9278b 100644
--- a/drivers/isdn/gigaset/bas-gigaset.c
+++ b/drivers/isdn/gigaset/bas-gigaset.c
@@ -2077,16 +2077,14 @@
/* Free hardware dependent part of the B channel structure
* parameter:
* bcs B channel structure
- * return value:
- * !=0 on success
*/
-static int gigaset_freebcshw(struct bc_state *bcs)
+static void gigaset_freebcshw(struct bc_state *bcs)
{
struct bas_bc_state *ubc = bcs->hw.bas;
int i;
if (!ubc)
- return 0;
+ return;
/* kill URBs and tasklets before freeing - better safe than sorry */
ubc->running = 0;
@@ -2104,14 +2102,13 @@
kfree(ubc->isooutbuf);
kfree(ubc);
bcs->hw.bas = NULL;
- return 1;
}
/* Initialize hardware dependent part of the B channel structure
* parameter:
* bcs B channel structure
* return value:
- * !=0 on success
+ * 0 on success, error code < 0 on failure
*/
static int gigaset_initbcshw(struct bc_state *bcs)
{
@@ -2121,7 +2118,7 @@
bcs->hw.bas = ubc = kmalloc(sizeof(struct bas_bc_state), GFP_KERNEL);
if (!ubc) {
pr_err("out of memory\n");
- return 0;
+ return -ENOMEM;
}
ubc->running = 0;
@@ -2138,7 +2135,7 @@
pr_err("out of memory\n");
kfree(ubc);
bcs->hw.bas = NULL;
- return 0;
+ return -ENOMEM;
}
tasklet_init(&ubc->sent_tasklet,
write_iso_tasklet, (unsigned long) bcs);
@@ -2163,7 +2160,7 @@
ubc->stolen0s = 0;
tasklet_init(&ubc->rcvd_tasklet,
read_iso_tasklet, (unsigned long) bcs);
- return 1;
+ return 0;
}
static void gigaset_reinitbcshw(struct bc_state *bcs)
@@ -2186,6 +2183,12 @@
cs->hw.bas = NULL;
}
+/* Initialize hardware dependent part of the cardstate structure
+ * parameter:
+ * cs cardstate structure
+ * return value:
+ * 0 on success, error code < 0 on failure
+ */
static int gigaset_initcshw(struct cardstate *cs)
{
struct bas_cardstate *ucs;
@@ -2193,13 +2196,13 @@
cs->hw.bas = ucs = kmalloc(sizeof *ucs, GFP_KERNEL);
if (!ucs) {
pr_err("out of memory\n");
- return 0;
+ return -ENOMEM;
}
ucs->int_in_buf = kmalloc(IP_MSGSIZE, GFP_KERNEL);
if (!ucs->int_in_buf) {
kfree(ucs);
pr_err("out of memory\n");
- return 0;
+ return -ENOMEM;
}
ucs->urb_cmd_in = NULL;
@@ -2218,7 +2221,7 @@
init_waitqueue_head(&ucs->waitqueue);
INIT_WORK(&ucs->int_in_wq, int_in_work);
- return 1;
+ return 0;
}
/* freeurbs
@@ -2378,18 +2381,20 @@
/* save address of controller structure */
usb_set_intfdata(interface, cs);
- if (!gigaset_start(cs))
+ rc = gigaset_start(cs);
+ if (rc < 0)
goto error;
return 0;
allocerr:
dev_err(cs->dev, "could not allocate URBs\n");
+ rc = -ENOMEM;
error:
freeurbs(cs);
usb_set_intfdata(interface, NULL);
gigaset_freecs(cs);
- return -ENODEV;
+ return rc;
}
/* gigaset_disconnect