Use helpers to obtain task pid in printks

The task_struct->pid member is going to be deprecated, so start
using the helpers (task_pid_nr/task_pid_vnr/task_pid_nr_ns) in
the kernel.

The first thing to start with is the pid, printed to dmesg - in
this case we may safely use task_pid_nr(). Besides, printks produce
more (much more) than a half of all the explicit pid usage.

[akpm@linux-foundation.org: git-drm went and changed lots of stuff]
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Cc: Dave Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index a702e2f..1ca6f46 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -113,13 +113,13 @@
 
 	if (count > HID_MIN_BUFFER_SIZE) {
 		printk(KERN_WARNING "hidraw: pid %d passed too large report\n",
-				current->pid);
+				task_pid_nr(current));
 		return -EINVAL;
 	}
 
 	if (count < 2) {
 		printk(KERN_WARNING "hidraw: pid %d passed too short report\n",
-				current->pid);
+				task_pid_nr(current));
 		return -EINVAL;
 	}