[PATCH] ppc32: fix several warnings

Fixes some annoying warnings due to unitialized variables.
Signed-off-by: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/ppc/kernel/signal.c

@@ -270,7 +270,7 @@ save_user_regs(struct pt_regs *regs, struct mcontext __user *frame, int sigret)
 static int
 restore_user_regs(struct pt_regs *regs, struct mcontext __user *sr, int sig)
 {
-	unsigned long save_r2;
+	unsigned long save_r2 = 0;
 #if defined(CONFIG_ALTIVEC) || defined(CONFIG_SPE)
 	unsigned long msr;
 #endif

arch/ppc/mm/44x_mmu.c

@@ -72,7 +72,7 @@ unsigned int tlb_44x_hwater = 62;
 static void __init
 ppc44x_pin_tlb(int slot, unsigned int virt, unsigned int phys)
 {
-	unsigned long attrib;
+	unsigned long attrib = 0;
 
 	__asm__ __volatile__("\
 	clrrwi	%2,%2,10\n\

arch/ppc/syslib/ppc4xx_pic.c

@@ -256,7 +256,7 @@ static void
 ppc4xx_uic_end(unsigned int irq)
 {
 	int bit, word;
-	unsigned int tr_bits;
+	unsigned int tr_bits = 0;
 
 	bit = irq & 0x1f;
 	word = irq >> 5;

arch/ppc/syslib/todc_time.c

@@ -277,9 +277,9 @@ todc_time_init(void)
 ulong
 todc_get_rtc_time(void)
 {
-	uint	year, mon, day, hour, min, sec;
+	uint	year = 0, mon = 0, day = 0, hour = 0, min = 0, sec = 0;
 	uint	limit, i;
-	u_char	save_control, uip;
+	u_char	save_control, uip = 0;
 
 	spin_lock(&rtc_lock);
 	save_control = todc_read_val(todc_info->control_a);
@@ -361,7 +361,7 @@ int
 todc_set_rtc_time(unsigned long nowtime)
 {
 	struct rtc_time	tm;
-	u_char		save_control, save_freq_select;
+	u_char		save_control, save_freq_select = 0;
 
 	spin_lock(&rtc_lock);
 	to_tm(nowtime, &tm);
@@ -416,7 +416,7 @@ todc_set_rtc_time(unsigned long nowtime)
  */
 static unsigned char __init todc_read_timereg(int addr)
 {
-	unsigned char save_control, val;
+	unsigned char save_control = 0, val;
 
 	switch (todc_info->rtc_type) {
 		case TODC_TYPE_DS1557: