1 files changed, 8 insertions, 10 deletions

diff --git a/arch/mips/alchemy/mtx-1/board_setup.c b/arch/mips/alchemy/mtx-1/board_setup.c
index 52d883d37dd7..6398fa95905c 100644
--- a/arch/mips/alchemy/mtx-1/board_setup.c
+++ b/arch/mips/alchemy/mtx-1/board_setup.c
@@ -60,9 +60,11 @@ static void mtx1_reset(char *c)
 
 static void mtx1_power_off(void)
 {
-        printk(KERN_ALERT "It's now safe to remove power\n");
         while (1)
-                asm volatile (".set mips3 ; wait ; .set mips1");
+                asm volatile (
+                "       .set    mips32                                  \n"
+                "       wait                                            \n"
+                "       .set    mips0                                   \n");
 }
 
 void __init board_setup(void)
@@ -105,14 +107,10 @@ void __init board_setup(void)
 int
 mtx1_pci_idsel(unsigned int devsel, int assert)
 {
-#define MTX_IDSEL_ONLY_0_AND_3 0
-#if MTX_IDSEL_ONLY_0_AND_3
-        if (devsel != 0 && devsel != 3) {
-                printk(KERN_ERR "*** not 0 or 3\n");
-                return 0;
-        }
-#endif
-
+        /* This function is only necessary to support a proprietary Cardbus
+         * adapter on the mtx-1 "singleboard" variant. It triggers a custom
+         * logic chip connected to EXT_IO3 (GPIO1) to suppress IDSEL signals.
+         */
         if (assert && devsel != 0)
                 /* Suppress signal to Cardbus */
                 alchemy_gpio_set_value(1, 0);   /* set EXT_IO3 OFF */