V4L/DVB (9093): gspca: Cleanup code and small changes.

- convert some #define to enum.
- remove some comments.
- return ENOMEM on memory allocation failure.

Signed-off-by: Erik Andren <erik.andren@gmail.com>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

3 files changed, 11 insertions, 14 deletions

diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index 02824fc101d5..9db3d899aa61 100644
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -237,7 +237,7 @@ static void bulk_irq(struct urb *urb
  * On LAST_PACKET, a new frame is returned.
  */
 struct gspca_frame *gspca_frame_add(struct gspca_dev *gspca_dev,
-                                    int packet_type,
+                                    enum gspca_packet_type packet_type,
                                     struct gspca_frame *frame,
                                     const __u8 *data,
                                     int len)
@@ -317,7 +317,6 @@ static void *rvmalloc(unsigned long size)
         void *mem;
         unsigned long adr;
 
-/*      size = PAGE_ALIGN(size);        (already done) */
         mem = vmalloc_32(size);
         if (mem != NULL) {
                 adr = (unsigned long) mem;
@@ -937,7 +936,6 @@ static int vidioc_querycap(struct file *file, void  *priv,
 
         memset(cap, 0, sizeof *cap);
         strncpy(cap->driver, gspca_dev->sd_desc->name, sizeof cap->driver);
-/*      strncpy(cap->card, gspca_dev->cam.dev_name, sizeof cap->card); */
         if (gspca_dev->dev->product != NULL) {
                 strncpy(cap->card, gspca_dev->dev->product,
                         sizeof cap->card);
@@ -1571,7 +1569,6 @@ static int vidioc_qbuf(struct file *file, void *priv,
         }
 
         frame->v4l2_buf.flags |= V4L2_BUF_FLAG_QUEUED;
-/*      frame->v4l2_buf.flags &= ~V4L2_BUF_FLAG_DONE; */
 
         if (frame->v4l2_buf.memory == V4L2_MEMORY_USERPTR) {
                 frame->v4l2_buf.m.userptr = v4l2_buf->m.userptr;
@@ -1836,22 +1833,21 @@ int gspca_dev_probe(struct usb_interface *intf,
         if (dev_size < sizeof *gspca_dev)
                 dev_size = sizeof *gspca_dev;
         gspca_dev = kzalloc(dev_size, GFP_KERNEL);
-        if (gspca_dev == NULL) {
+        if (!gspca_dev) {
                 err("couldn't kzalloc gspca struct");
-                return -EIO;
+                return -ENOMEM;
         }
         kref_init(&gspca_dev->kref);
         gspca_dev->usb_buf = kmalloc(USB_BUF_SZ, GFP_KERNEL);
         if (!gspca_dev->usb_buf) {
                 err("out of memory");
-                ret = -EIO;
+                ret = -ENOMEM;
                 goto out;
         }
         gspca_dev->dev = dev;
         gspca_dev->iface = interface->bInterfaceNumber;
         gspca_dev->nbalt = intf->num_altsetting;
         gspca_dev->sd_desc = sd_desc;
-/*      gspca_dev->users = 0;                   (done by kzalloc) */
         gspca_dev->nbufread = 2;
 
         /* configure the subdriver and initialize the USB device */
diff --git a/drivers/media/video/gspca/gspca.h b/drivers/media/video/gspca/gspca.h
index f9006542c58f..4779dd0b06da 100644
--- a/drivers/media/video/gspca/gspca.h
+++ b/drivers/media/video/gspca/gspca.h
@@ -106,10 +106,12 @@ struct sd_desc {
 };
 
 /* packet types when moving from iso buf to frame buf */
-#define DISCARD_PACKET  0
-#define FIRST_PACKET    1
-#define INTER_PACKET    2
-#define LAST_PACKET     3
+enum gspca_packet_type {
+        DISCARD_PACKET,
+        FIRST_PACKET,
+        INTER_PACKET,
+        LAST_PACKET
+};
 
 struct gspca_frame {
         __u8 *data;                     /* frame buffer */
@@ -175,7 +177,7 @@ int gspca_dev_probe(struct usb_interface *intf,
                 struct module *module);
 void gspca_disconnect(struct usb_interface *intf);
 struct gspca_frame *gspca_frame_add(struct gspca_dev *gspca_dev,
-                                    int packet_type,
+                                    enum gspca_packet_type packet_type,
                                     struct gspca_frame *frame,
                                     const __u8 *data,
                                     int len);
diff --git a/drivers/media/video/gspca/m5602/m5602_core.c b/drivers/media/video/gspca/m5602/m5602_core.c
index 559495e2d11e..ac105ef4aa6a 100644
--- a/drivers/media/video/gspca/m5602/m5602_core.c
+++ b/drivers/media/video/gspca/m5602/m5602_core.c
@@ -146,7 +146,6 @@ int m5602_probe_sensor(struct sd *sd)
                 return 0;
         }
 
-
         /* More sensor probe function goes here */
         info("Failed to find a sensor");
         sd->sensor = NULL;