[PATCH] usb: kfree() cleanups in drivers/usb/core/devio.c

Checking for NULL before calling kfree() is redundant. This patch removes
these redundant checks and also makes a few tiny whitespace changes.

Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index 923e518..6bfab4b 100644 (file)
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -213,12 +213,10 @@ static struct async *alloc_async(unsigned int numisoframes)
 
 static void free_async(struct async *as)
 {
-        if (as->urb->transfer_buffer)
-                kfree(as->urb->transfer_buffer);
-        if (as->urb->setup_packet)
-                kfree(as->urb->setup_packet);
+       kfree(as->urb->transfer_buffer);
+       kfree(as->urb->setup_packet);
        usb_free_urb(as->urb);
-        kfree(as);
+       kfree(as);
 }
 
 static inline void async_newpending(struct async *as)
@@ -938,17 +936,13 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
                return -EINVAL;
        }
        if (!(as = alloc_async(uurb->number_of_packets))) {
-               if (isopkt)
-                       kfree(isopkt);
-               if (dr)
-                       kfree(dr);
+               kfree(isopkt);
+               kfree(dr);
                return -ENOMEM;
        }
        if (!(as->urb->transfer_buffer = kmalloc(uurb->buffer_length, GFP_KERNEL))) {
-               if (isopkt)
-                       kfree(isopkt);
-               if (dr)
-                       kfree(dr);
+               kfree(isopkt);
+               kfree(dr);
                free_async(as);
                return -ENOMEM;
        }
@@ -967,8 +961,7 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
                as->urb->iso_frame_desc[u].length = isopkt[u].length;
                totlen += isopkt[u].length;
        }
-       if (isopkt)
-               kfree(isopkt);
+       kfree(isopkt);
        as->ps = ps;
         as->userurb = arg;
        if (uurb->endpoint & USB_DIR_IN)
@@ -1237,7 +1230,7 @@ static int proc_ioctl (struct dev_state *ps, void __user *arg)
                        return -ENOMEM;
                if ((_IOC_DIR(ctrl.ioctl_code) & _IOC_WRITE)) {
                        if (copy_from_user (buf, ctrl.data, size)) {
-                               kfree (buf);
+                               kfree(buf);
                                return -EFAULT;
                        }
                } else {
@@ -1246,8 +1239,7 @@ static int proc_ioctl (struct dev_state *ps, void __user *arg)
        }
 
        if (!connected(ps->dev)) {
-               if (buf)
-                       kfree(buf);
+               kfree(buf);
                return -ENODEV;
        }
 
@@ -1309,8 +1301,8 @@ static int proc_ioctl (struct dev_state *ps, void __user *arg)
                        && size > 0
                        && copy_to_user (ctrl.data, buf, size) != 0)
                retval = -EFAULT;
-       if (buf != NULL)
-               kfree (buf);
+
+       kfree(buf);
        return retval;
 }