USB: "sparse" cleanups for usb gadgets
This removes complaints about the gadget stack which are generated by
the currrent "sparse": it doesn't like the fact that zero is the null
pointer. (Last I checked, C guarantees that's correct ...)
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/gadget/config.c b/drivers/usb/gadget/config.c
index d18901b..c6760ae 100644
--- a/drivers/usb/gadget/config.c
+++ b/drivers/usb/gadget/config.c
@@ -50,7 +50,7 @@
return -EINVAL;
/* fill buffer from src[] until null descriptor ptr */
- for (; 0 != *src; src++) {
+ for (; NULL != *src; src++) {
unsigned len = (*src)->bLength;
if (len > buflen)
diff --git a/drivers/usb/gadget/epautoconf.c b/drivers/usb/gadget/epautoconf.c
index 6042364..3aa46cf 100644
--- a/drivers/usb/gadget/epautoconf.c
+++ b/drivers/usb/gadget/epautoconf.c
@@ -71,7 +71,7 @@
u16 max;
/* endpoint already claimed? */
- if (0 != ep->driver_data)
+ if (NULL != ep->driver_data)
return 0;
/* only support ep0 for portable CONTROL traffic */
diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c
index a337673..593e235 100644
--- a/drivers/usb/gadget/ether.c
+++ b/drivers/usb/gadget/ether.c
@@ -1723,7 +1723,8 @@
size += sizeof (struct rndis_packet_msg_type);
size -= size % dev->out_ep->maxpacket;
- if ((skb = alloc_skb (size + NET_IP_ALIGN, gfp_flags)) == 0) {
+ skb = alloc_skb(size + NET_IP_ALIGN, gfp_flags);
+ if (skb == NULL) {
DEBUG (dev, "no rx skb\n");
goto enomem;
}
diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c
index e60745ff..173004f 100644
--- a/drivers/usb/gadget/inode.c
+++ b/drivers/usb/gadget/inode.c
@@ -964,7 +964,7 @@
}
if (len > sizeof (dev->rbuf))
req->buf = kmalloc(len, GFP_ATOMIC);
- if (req->buf == 0) {
+ if (req->buf == NULL) {
req->buf = dev->rbuf;
return -ENOMEM;
}
@@ -1394,7 +1394,7 @@
dev->setup_abort = 0;
if (dev->state == STATE_DEV_UNCONNECTED) {
#ifdef CONFIG_USB_GADGET_DUALSPEED
- if (gadget->speed == USB_SPEED_HIGH && dev->hs_config == 0) {
+ if (gadget->speed == USB_SPEED_HIGH && dev->hs_config == NULL) {
spin_unlock(&dev->lock);
ERROR (dev, "no high speed config??\n");
return -EINVAL;
diff --git a/drivers/usb/gadget/m66592-udc.c b/drivers/usb/gadget/m66592-udc.c
index 700dda8..4b27d12 100644
--- a/drivers/usb/gadget/m66592-udc.c
+++ b/drivers/usb/gadget/m66592-udc.c
@@ -1299,7 +1299,7 @@
req->req.actual = 0;
req->req.status = -EINPROGRESS;
- if (ep->desc == 0) /* control */
+ if (ep->desc == NULL) /* control */
start_ep0(ep, req);
else {
if (request && !ep->busy)
diff --git a/drivers/usb/gadget/zero.c b/drivers/usb/gadget/zero.c
index a2e6e3f..fcfe869 100644
--- a/drivers/usb/gadget/zero.c
+++ b/drivers/usb/gadget/zero.c
@@ -653,7 +653,8 @@
result = usb_ep_enable (ep, d);
if (result == 0) {
ep->driver_data = dev;
- if (source_sink_start_ep (ep, gfp_flags) != 0) {
+ if (source_sink_start_ep(ep, gfp_flags)
+ != NULL) {
dev->in_ep = ep;
continue;
}
@@ -667,7 +668,8 @@
result = usb_ep_enable (ep, d);
if (result == 0) {
ep->driver_data = dev;
- if (source_sink_start_ep (ep, gfp_flags) != 0) {
+ if (source_sink_start_ep(ep, gfp_flags)
+ != NULL) {
dev->out_ep = ep;
continue;
}