clk: pistachio: Add a pll_lock() helper for clarity

This commit adds a pll_lock() helper making the code more readable.
Cosmetic change only, no functionality changes.

Signed-off-by: Andrew Bresticker <[e-mail]>
Signed-off-by: Ezequiel Garcia <[e-mail]>
Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/pistachio/clk-pll.c

···
 	writel(val, pll->base + reg);
 }
 
+static inline void pll_lock(struct pistachio_clk_pll *pll)
+{
+	while (!(pll_readl(pll, PLL_STATUS) & PLL_STATUS_LOCK))
+		cpu_relax();
+}
+
 static inline u32 do_div_round_closest(u64 dividend, u32 divisor)
 {
 	dividend += divisor / 2;
···
 		(params->postdiv2 << PLL_FRAC_CTRL2_POSTDIV2_SHIFT);
 	pll_writel(pll, val, PLL_CTRL2);
 
-	while (!(pll_readl(pll, PLL_STATUS) & PLL_STATUS_LOCK))
-		cpu_relax();
+	pll_lock(pll);
 
 	if (!was_enabled)
 		pll_gf40lp_frac_disable(hw);
···
 		(params->postdiv2 << PLL_INT_CTRL1_POSTDIV2_SHIFT);
 	pll_writel(pll, val, PLL_CTRL1);
 
-	while (!(pll_readl(pll, PLL_STATUS) & PLL_STATUS_LOCK))
-		cpu_relax();
+	pll_lock(pll);
 
 	if (!was_enabled)
 		pll_gf40lp_laint_disable(hw);