From: Magnus Damm <damm@xxxxxxxxxx>
This patch improves the disable_controller() function in the
r8a66597-udc driver to disable all interrupts and also clear
status flags. With this patch in place the driver survives
kexec.
Signed-off-by: Magnus Damm <damm@xxxxxxxxxx>
---
drivers/usb/gadget/r8a66597-udc.c | 9 +++++++++
1 file changed, 9 insertions(+)
--- 0005/drivers/usb/gadget/r8a66597-udc.c
+++ work/drivers/usb/gadget/r8a66597-udc.c 2009-08-19 22:04:26.000000000 +0900
@@ -614,8 +614,17 @@ static void disable_controller(struct r8
if (r8a66597->pdata->on_chip) {
r8a66597_bset(r8a66597, SCKE, SYSCFG0);
+ /* disable interrupts */
r8a66597_write(r8a66597, 0, INTENB0);
r8a66597_write(r8a66597, 0, INTENB1);
+ r8a66597_write(r8a66597, 0, BRDYENB);
+ r8a66597_write(r8a66597, 0, BEMPENB);
+ r8a66597_write(r8a66597, 0, NRDYENB);
+
+ /* clear status */
+ r8a66597_write(r8a66597, 0, BRDYSTS);
+ r8a66597_write(r8a66597, 0, NRDYSTS);
+ r8a66597_write(r8a66597, 0, BEMPSTS);
r8a66597_bclr(r8a66597, USBE, SYSCFG0);
r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
--
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