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Commit 0bb886d2 authored by Magnus Damm's avatar Magnus Damm Committed by Paul Mundt
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usb: r8a66597-udc disable interrupts on shutdown fix 



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: default avatarMagnus Damm <damm@igel.co.jp>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent ef5ce3b6

drivers/usb/gadget/r8a66597-udc.c

+9 −0
Original line number Diff line number Diff line
@@ -614,8 +614,17 @@ static void disable_controller(struct r8a66597 *r8a66597) 
	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);