When comparing a pointer, it's clearer to compare it to NULL than to 0.
Here is the semantic patch:
@@
expression *E;
@@
E ==
- 0
+ NULL
@@
expression *E;
@@
- 0
+ NULL
== E
@@
expression *E;
@@
E !=
- 0
+ NULL
@@
expression *E;
@@
- 0
+ NULL
!= E
PS: I have performed the same transformation on the whole kernel
and it affects around 300 files. I will send the remaining patches
if you are interested in.
Signed-off-by: Yoann Padioleau <[EMAIL PROTECTED]>
config.c | 2 +-
ether.c | 2 +-
goku_udc.c | 2 +-
inode.c | 2 +-
lh7a40x_udc.c | 2 +-
m66592-udc.c | 2 +-
net2280.c | 8 ++++----
pxa2xx_udc.c | 4 ++--
pxa2xx_udc.h | 2 +-
s3c2410_udc.c | 2 +-
10 files changed, 14 insertions(+), 14 deletions(-)
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 @@ usb_descriptor_fillbuf(void *buf, unsign
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/ether.c b/drivers/usb/gadget/ether.c
index dbaf867..2005b74 100644
--- a/drivers/usb/gadget/ether.c
+++ b/drivers/usb/gadget/ether.c
@@ -1719,7 +1719,7 @@ rx_submit (struct eth_dev *dev, struct u
size += sizeof (struct rndis_packet_msg_type);
size -= size % dev->out_ep->maxpacket;
- if ((skb = alloc_skb (size + NET_IP_ALIGN, gfp_flags)) == 0) {
+ if ((skb = alloc_skb (size + NET_IP_ALIGN, gfp_flags)) == NULL) {
DEBUG (dev, "no rx skb\n");
goto enomem;
}
diff --git a/drivers/usb/gadget/goku_udc.c b/drivers/usb/gadget/goku_udc.c
index 349b816..55fb650 100644
--- a/drivers/usb/gadget/goku_udc.c
+++ b/drivers/usb/gadget/goku_udc.c
@@ -776,7 +776,7 @@ #endif
} /* else pio or dma irq handler advances the queue. */
- if (likely(req != 0))
+ if (likely(req != NULL))
list_add_tail(&req->queue, &ep->queue);
if (likely(!list_empty(&ep->queue))
diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c
index e60745f..dcad83b 100644
--- a/drivers/usb/gadget/inode.c
+++ b/drivers/usb/gadget/inode.c
@@ -1394,7 +1394,7 @@ gadgetfs_setup (struct usb_gadget *gadge
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/lh7a40x_udc.c b/drivers/usb/gadget/lh7a40x_udc.c
index e78c2dd..49ceb1b 100644
--- a/drivers/usb/gadget/lh7a40x_udc.c
+++ b/drivers/usb/gadget/lh7a40x_udc.c
@@ -1202,7 +1202,7 @@ static int lh7a40x_queue(struct usb_ep *
}
/* pio or dma irq handler advances the queue. */
- if (likely(req != 0))
+ if (likely(req != NULL))
list_add_tail(&req->queue, &ep->queue);
spin_unlock_irqrestore(&dev->lock, flags);
diff --git a/drivers/usb/gadget/m66592-udc.c b/drivers/usb/gadget/m66592-udc.c
index 0174a32..6e8d5d9 100644
--- a/drivers/usb/gadget/m66592-udc.c
+++ b/drivers/usb/gadget/m66592-udc.c
@@ -1278,7 +1278,7 @@ static int m66592_queue(struct usb_ep *_
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/net2280.c b/drivers/usb/gadget/net2280.c
index c3d364e..aa53a50 100644
--- a/drivers/usb/gadget/net2280.c
+++ b/drivers/usb/gadget/net2280.c
@@ -2120,7 +2120,7 @@ #endif
return;
/* manual DMA queue advance after short OUT */
- if (likely (ep->dma != 0)) {
+ if (likely (ep->dma != NULL)) {
if (t & (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT)) {
u32 count;
int stopped = ep->stopped;
@@ -2380,7 +2380,7 @@ #define w_length le16_to_cpu(u.r.wLength
/* hw handles device and interface status */
if (u.r.bRequestType != (USB_DIR_IN|USB_RECIP_ENDPOINT))
goto delegate;
- if ((e = get_ep_by_addr (dev, w_index)) == 0
+ if ((e = get_ep_by_addr (dev, w_index)) == NULL
|| w_length > 2)
goto do_stall;
@@ -2408,7 +2408,7 @@ #define w_length le16_to_cpu(u.r.wLength
if (w_value != USB_ENDPOINT_HALT
|| w_length != 0)
goto do_stall;
- if ((e = get_ep_by_addr (dev, w_index)) == 0)
+ if ((e = get_ep_by_addr (dev, w_index)) == NULL)
goto do_stall;
clear_halt (e);
allow_status (ep);
@@ -2425,7 +2425,7 @@ #define w_length le16_to_cpu(u.r.wLength
if (w_value != USB_ENDPOINT_HALT
|| w_length != 0)
goto do_stall;
- if ((e = get_ep_by_addr (dev, w_index)) == 0)
+ if ((e = get_ep_by_addr (dev, w_index)) == NULL)
goto do_stall;
set_halt (e);
allow_status (ep);
diff --git a/drivers/usb/gadget/pxa2xx_udc.c b/drivers/usb/gadget/pxa2xx_udc.c
index 63b9521..b63710d 100644
--- a/drivers/usb/gadget/pxa2xx_udc.c
+++ b/drivers/usb/gadget/pxa2xx_udc.c
@@ -688,7 +688,7 @@ pxa2xx_ep_queue(struct usb_ep *_ep, stru
/* kickstart this i/o queue? */
if (list_empty(&ep->queue) && !ep->stopped) {
- if (ep->desc == 0 /* ep0 */) {
+ if (ep->desc == NULL /* ep0 */) {
unsigned length = _req->length;
switch (dev->ep0state) {
@@ -742,7 +742,7 @@ pxa2xx_ep_queue(struct usb_ep *_ep, stru
}
/* pio or dma irq handler advances the queue. */
- if (likely (req != 0))
+ if (likely (req != NULL))
list_add_tail(&req->queue, &ep->queue);
local_irq_restore(flags);
diff --git a/drivers/usb/gadget/pxa2xx_udc.h b/drivers/usb/gadget/pxa2xx_udc.h
index 0e5d0e6..ff25984 100644
--- a/drivers/usb/gadget/pxa2xx_udc.h
+++ b/drivers/usb/gadget/pxa2xx_udc.h
@@ -232,7 +232,7 @@ dump_state(struct pxa2xx_udc *dev)
dev->stats.read.bytes, dev->stats.read.ops);
for (i = 1; i < PXA_UDC_NUM_ENDPOINTS; i++) {
- if (dev->ep [i].desc == 0)
+ if (dev->ep [i].desc == NULL)
continue;
DMSG ("udccs%d = %02x\n", i, *dev->ep->reg_udccs);
}
diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c
index 0be80c6..281b69d 100644
--- a/drivers/usb/gadget/s3c2410_udc.c
+++ b/drivers/usb/gadget/s3c2410_udc.c
@@ -1294,7 +1294,7 @@ static int s3c2410_udc_queue(struct usb_
}
/* pio or dma irq handler advances the queue. */
- if (likely (req != 0))
+ if (likely (req != NULL))
list_add_tail(&req->queue, &ep->queue);
local_irq_restore(flags);
-
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