sh: fix r2d board detection

This patch fixes the R2D-PLUS and R2D-1 board detection code. Tested on two
R2D-PLUS and two R2D-1 boards.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 5 insertions, 2 deletions

diff --git a/arch/sh/boards/renesas/rts7751r2d/irq.c b/arch/sh/boards/renesas/rts7751r2d/irq.c
index dadc4aa5ae82..7cc2813adfe4 100644
--- a/arch/sh/boards/renesas/rts7751r2d/irq.c
+++ b/arch/sh/boards/renesas/rts7751r2d/irq.c
@@ -130,7 +130,7 @@ void __init init_rts7751r2d_IRQ(void)
 {
         struct intc_desc *d;
 
-        switch (ctrl_inw(PA_BVERREG)) {
+        switch (ctrl_inw(PA_VERREG) & 0xf0) {
 #ifdef CONFIG_RTS7751R2D_PLUS
         case 0x10:
                 printk(KERN_INFO "Using R2D-PLUS interrupt controller.\n");
@@ -139,13 +139,16 @@ void __init init_rts7751r2d_IRQ(void)
                 break;
 #endif
 #ifdef CONFIG_RTS7751R2D_1
-        case 0x11:
+        case 0x00: /* according to manual */
+        case 0x30: /* in reality */
                 printk(KERN_INFO "Using R2D-1 interrupt controller.\n");
                 d = &intc_desc_r2d_1;
                 memcpy(irl2irq, irl2irq_r2d_1, R2D_NR_IRL);
                 break;
 #endif
         default:
+                printk(KERN_INFO "Unknown R2D interrupt controller 0x%04x\n",
+                       ctrl_inw(PA_VERREG));
                 return;
         }