[PATCH] ARM: 2846/1: proper handling of CKEN for pxafb

Patch from Nicolas Pitre

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 6 insertions, 2 deletions

diff --git a/drivers/video/pxafb.c b/drivers/video/pxafb.c
index 16e37a535d85..30112816420c 100644
--- a/drivers/video/pxafb.c
+++ b/drivers/video/pxafb.c
@@ -717,6 +717,9 @@ static void pxafb_enable_controller(struct pxafb_info *fbi)
         DPRINTK("reg_lccr2 0x%08x\n", (unsigned int) fbi->reg_lccr2);
         DPRINTK("reg_lccr3 0x%08x\n", (unsigned int) fbi->reg_lccr3);
 
+        /* enable LCD controller clock */
+        pxa_set_cken(CKEN16_LCD, 1);
+
         /* Sequence from 11.7.10 */
         LCCR3 = fbi->reg_lccr3;
         LCCR2 = fbi->reg_lccr2;
@@ -750,6 +753,9 @@ static void pxafb_disable_controller(struct pxafb_info *fbi)
 
         schedule_timeout(20 * HZ / 1000);
         remove_wait_queue(&fbi->ctrlr_wait, &wait);
+
+        /* disable LCD controller clock */
+        pxa_set_cken(CKEN16_LCD, 0);
 }
 
 /*
@@ -1299,8 +1305,6 @@ int __init pxafb_probe(struct device *dev)
                 ret = -ENOMEM;
                 goto failed;
         }
-        /* enable LCD controller clock */
-        pxa_set_cken(CKEN16_LCD, 1);
 
         ret = request_irq(IRQ_LCD, pxafb_handle_irq, SA_INTERRUPT, "LCD", fbi);
         if (ret) {