ARM: mxs: remove now unused timer_clk argument from mxs_timer_init

With old mxs clock support removed, the timer_clk argument of
mxs_timer_init is unused now, so remove it.
Signed-off-by: NShawn Guo <shawn.guo@linaro.org>

arch/arm/mach-mxs/include/mach/common.h

@@ -11,11 +11,9 @@
 #ifndef __MACH_MXS_COMMON_H__
 #define __MACH_MXS_COMMON_H__
 
-struct clk;
-
 extern const u32 *mxs_get_ocotp(void);
 extern int mxs_reset_block(void __iomem *);
-extern void mxs_timer_init(struct clk *, int);
+extern void mxs_timer_init(int);
 extern void mxs_restart(char, const char *);
 extern int mxs_saif_clkmux_select(unsigned int clkmux);
 

arch/arm/mach-mxs/timer.c

@@ -244,14 +244,14 @@ static int __init mxs_clocksource_init(struct clk *timer_clk)
 	return 0;
 }
 
-void __init mxs_timer_init(struct clk *timer_clk, int irq)
+void __init mxs_timer_init(int irq)
 {
-	if (!timer_clk) {
-		timer_clk = clk_get_sys("timrot", NULL);
-		if (IS_ERR(timer_clk)) {
-			pr_err("%s: failed to get clk\n", __func__);
-			return;
-		}
+	struct clk *timer_clk;
+
+	timer_clk = clk_get_sys("timrot", NULL);
+	if (IS_ERR(timer_clk)) {
+		pr_err("%s: failed to get clk\n", __func__);
+		return;
 	}
 
 	clk_prepare_enable(timer_clk);

drivers/clk/mxs/clk-imx23.c

@@ -198,7 +198,7 @@ int __init mx23_clocks_init(void)
 	for (i = 0; i < ARRAY_SIZE(clks_init_on); i++)
 		clk_prepare_enable(clks[clks_init_on[i]]);
 
-	mxs_timer_init(NULL, MX23_INT_TIMER0);
+	mxs_timer_init(MX23_INT_TIMER0);
 
 	return 0;
 }

drivers/clk/mxs/clk-imx28.c

@@ -331,7 +331,7 @@ int __init mx28_clocks_init(void)
 	for (i = 0; i < ARRAY_SIZE(clks_init_on); i++)
 		clk_prepare_enable(clks[clks_init_on[i]]);
 
-	mxs_timer_init(NULL, MX28_INT_TIMER0);
+	mxs_timer_init(MX28_INT_TIMER0);
 
 	return 0;
 }