Blackfin: kgdb_test: clean up code a bit

- document simple global symbols
- convert printk to pr_*
- clean up spurious whitespace
- use min_t()
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

arch/blackfin/kernel/kgdb_test.c

@@ -17,6 +17,7 @@
 
 #include <asm/blackfin.h>
 
+/* Symbols are here for kgdb test to poke directly */
 static char cmdline[256];
 static size_t len;
 
@@ -27,11 +28,10 @@ void kgdb_l1_test(void) __attribute__((l1_text));
 
 void kgdb_l1_test(void)
 {
-	printk(KERN_ALERT "L1(before change) : data variable addr = 0x%p, data value is %d\n", &num1, num1);
-	printk(KERN_ALERT "L1 : code function addr = 0x%p\n", kgdb_l1_test);
-	num1 = num1 + 10 ;
-	printk(KERN_ALERT "L1(after change) : data variable addr = 0x%p, data value is %d\n", &num1, num1);
-	return ;
+	pr_alert("L1(before change) : data variable addr = 0x%p, data value is %d\n", &num1, num1);
+	pr_alert("L1 : code function addr = 0x%p\n", kgdb_l1_test);
+	num1 = num1 + 10;
+	pr_alert("L1(after change) : data variable addr = 0x%p, data value is %d\n", &num1, num1);
 }
 #endif
 
@@ -42,11 +42,10 @@ void kgdb_l2_test(void) __attribute__((l2));
 
 void kgdb_l2_test(void)
 {
-	printk(KERN_ALERT "L2(before change) : data variable addr = 0x%p, data value is %d\n", &num2, num2);
-	printk(KERN_ALERT "L2 : code function addr = 0x%p\n", kgdb_l2_test);
-	num2 = num2 + 20 ;
-	printk(KERN_ALERT "L2(after change) : data variable addr = 0x%p, data value is %d\n", &num2, num2);
-	return ;
+	pr_alert("L2(before change) : data variable addr = 0x%p, data value is %d\n", &num2, num2);
+	pr_alert("L2 : code function addr = 0x%p\n", kgdb_l2_test);
+	num2 = num2 + 20;
+	pr_alert("L2(after change) : data variable addr = 0x%p, data value is %d\n", &num2, num2);
 }
 
 #endif
@@ -54,12 +53,13 @@ void kgdb_l2_test(void)
 
 int kgdb_test(char *name, int len, int count, int z)
 {
-	printk(KERN_ALERT "kgdb name(%d): %s, %d, %d\n", len, name, count, z);
+	pr_alert("kgdb name(%d): %s, %d, %d\n", len, name, count, z);
 	count = z;
 	return count;
 }
 
-static ssize_t kgdb_test_proc_read(struct file *file, char __user *buf,
+static ssize_t
+kgdb_test_proc_read(struct file *file, char __user *buf,
                     size_t count, loff_t *ppos)
 {
 	kgdb_test("hello world!", 12, 0x55, 0x10);
@@ -73,14 +73,11 @@ static ssize_t kgdb_test_proc_read(struct file *file, char __user *buf,
 	return 0;
 }
 
-static ssize_t kgdb_test_proc_write(struct file *file,
-		const char __user *buffer, size_t count, loff_t *pos)
+static ssize_t
+kgdb_test_proc_write(struct file *file, const char __user *buffer,
+                     size_t count, loff_t *pos)
 {
-	if (count >= 256)
-		len = 255;
-	else
-		len = count;
-
+	len = min_t(size_t, 255, count);
 	memcpy(cmdline, buffer, count);
 	cmdline[len] = 0;
 
@@ -100,6 +97,7 @@ static int __init kgdbtest_init(void)
 	entry = proc_create("kgdbtest", 0, NULL, &kgdb_test_proc_fops);
 	if (entry == NULL)
 		return -ENOMEM;
+
 	return 0;
 }