usb: renesas_usbhs: fixup interrupt status clear method

When interrupt happened, renesas_usbhs driver gets irq status
by usbhs_status_get_each_irq(), and cleared all status by using 0.
But, this method is incorrect,
since extra interrupt might occur between them.
This patch cleared corresponding bits only

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/renesas_usbhs/mod.c b/drivers/usb/renesas_usbhs/mod.c
index 35c5208..61933a9 100644 (file)
--- a/drivers/usb/renesas_usbhs/mod.c
+++ b/drivers/usb/renesas_usbhs/mod.c
@@ -273,9 +273,9 @@ static irqreturn_t usbhs_interrupt(int irq, void *data)
        usbhs_write(priv, INTSTS0, ~irq_state.intsts0 & INTSTS0_MAGIC);
        usbhs_write(priv, INTSTS1, ~irq_state.intsts1 & INTSTS1_MAGIC);
 
-       usbhs_write(priv, BRDYSTS, 0);
-       usbhs_write(priv, NRDYSTS, 0);
-       usbhs_write(priv, BEMPSTS, 0);
+       usbhs_write(priv, BRDYSTS, ~irq_state.brdysts);
+       usbhs_write(priv, NRDYSTS, ~irq_state.nrdysts);
+       usbhs_write(priv, BEMPSTS, ~irq_state.bempsts);
 
        /*
         * call irq callback functions