forked from Minki/linux
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: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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@ -614,8 +614,17 @@ static void disable_controller(struct r8a66597 *r8a66597)
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if (r8a66597->pdata->on_chip) {
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r8a66597_bset(r8a66597, SCKE, SYSCFG0);
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/* disable interrupts */
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r8a66597_write(r8a66597, 0, INTENB0);
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r8a66597_write(r8a66597, 0, INTENB1);
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r8a66597_write(r8a66597, 0, BRDYENB);
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r8a66597_write(r8a66597, 0, BEMPENB);
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r8a66597_write(r8a66597, 0, NRDYENB);
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/* clear status */
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r8a66597_write(r8a66597, 0, BRDYSTS);
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r8a66597_write(r8a66597, 0, NRDYSTS);
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r8a66597_write(r8a66597, 0, BEMPSTS);
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r8a66597_bclr(r8a66597, USBE, SYSCFG0);
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r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
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