diff mbox

usb: r8a66597-udc disable interrupts on shutdown fix

Message ID 20090819142610.23156.17157.sendpatchset@rx1.opensource.se (mailing list archive)
State Accepted
Headers show

Commit Message

Magnus Damm Aug. 19, 2009, 2:26 p.m. UTC 
From: Magnus Damm <damm@igel.co.jp>

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@igel.co.jp>
---

 drivers/usb/gadget/r8a66597-udc.c |    9 +++++++++
 1 file changed, 9 insertions(+)

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diff mbox

Patch

--- 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);