ARM: OMAP1: clock: Use IS_ERR_OR_NULL() to clean code

Use IS_ERR_OR_NULL() to make the code cleaner.

Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>
Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/mach-omap1/clock.c b/arch/arm/mach-omap1/clock.c
index bd5be82..9d4a0ab 100644 (file)
--- a/arch/arm/mach-omap1/clock.c
+++ b/arch/arm/mach-omap1/clock.c
@@ -612,7 +612,7 @@ int clk_enable(struct clk *clk)
        unsigned long flags;
        int ret;
 
-       if (clk == NULL || IS_ERR(clk))
+       if (IS_ERR_OR_NULL(clk))
                return -EINVAL;
 
        spin_lock_irqsave(&clockfw_lock, flags);
@@ -627,7 +627,7 @@ void clk_disable(struct clk *clk)
 {
        unsigned long flags;
 
-       if (clk == NULL || IS_ERR(clk))
+       if (IS_ERR_OR_NULL(clk))
                return;
 
        spin_lock_irqsave(&clockfw_lock, flags);
@@ -650,7 +650,7 @@ unsigned long clk_get_rate(struct clk *clk)
        unsigned long flags;
        unsigned long ret;
 
-       if (clk == NULL || IS_ERR(clk))
+       if (IS_ERR_OR_NULL(clk))
                return 0;
 
        spin_lock_irqsave(&clockfw_lock, flags);
@@ -670,7 +670,7 @@ long clk_round_rate(struct clk *clk, unsigned long rate)
        unsigned long flags;
        long ret;
 
-       if (clk == NULL || IS_ERR(clk))
+       if (IS_ERR_OR_NULL(clk))
                return 0;
 
        spin_lock_irqsave(&clockfw_lock, flags);
@@ -686,7 +686,7 @@ int clk_set_rate(struct clk *clk, unsigned long rate)
        unsigned long flags;
        int ret = -EINVAL;
 
-       if (clk == NULL || IS_ERR(clk))
+       if (IS_ERR_OR_NULL(clk))
                return ret;
 
        spin_lock_irqsave(&clockfw_lock, flags);
@@ -791,7 +791,7 @@ void clk_preinit(struct clk *clk)
 
 int clk_register(struct clk *clk)
 {
-       if (clk == NULL || IS_ERR(clk))
+       if (IS_ERR_OR_NULL(clk))
                return -EINVAL;
 
        /*
@@ -817,7 +817,7 @@ EXPORT_SYMBOL(clk_register);
 
 void clk_unregister(struct clk *clk)
 {
-       if (clk == NULL || IS_ERR(clk))
+       if (IS_ERR_OR_NULL(clk))
                return;
 
        mutex_lock(&clocks_mutex);