1 files changed, 15 insertions, 4 deletions

diff --git a/arch/arm/plat-omap/mux.c b/arch/arm/plat-omap/mux.c
index 6c798d288688..75211f20ccb3 100644
--- a/arch/arm/plat-omap/mux.c
+++ b/arch/arm/plat-omap/mux.c
@@ -83,10 +83,21 @@ int __init_or_module omap_cfg_reg(const unsigned long index)
                         reg |= OMAP24XX_PULL_ENA;
                 if(cfg->pu_pd_val)
                         reg |= OMAP24XX_PULL_UP;
-#ifdef CONFIG_OMAP_MUX_DEBUG
-                printk("Muxing %s (0x%08x): 0x%02x -> 0x%02x\n",
-                       cfg->name, OMAP24XX_L4_BASE + cfg->mux_reg,
-                       omap_readb(OMAP24XX_L4_BASE + cfg->mux_reg), reg);
+#if defined(CONFIG_OMAP_MUX_DEBUG) || defined(CONFIG_OMAP_MUX_WARNINGS)
+                {
+                        u8 orig = omap_readb(OMAP24XX_L4_BASE + cfg->mux_reg);
+                        u8 debug = 0;
+
+#ifdef  CONFIG_OMAP_MUX_DEBUG
+                        debug = cfg->debug;
+#endif
+                        warn = (orig != reg);
+                        if (debug || warn)
+                                printk("MUX: setup %s (0x%08x): 0x%02x -> 0x%02x\n",
+                                                cfg->name,
+                                                OMAP24XX_L4_BASE + cfg->mux_reg,
+                                                orig, reg);
+                }
 #endif
                 omap_writeb(reg, OMAP24XX_L4_BASE + cfg->mux_reg);