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Commit 651f5e49 authored by Kuninori Morimoto's avatar Kuninori Morimoto Committed by Felipe Balbi
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usb: gadget: renesas_usbhs: tidyup INTENB0 method 



This patch tidyup Interrupt Enable Register 0 (INTENB0)
which has relationship with picky BEMPENB/BRDYENB.

 - add explain comment
 - ignore nonsense 0 write case

Signed-off-by: default avatarKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 0c6ef985

drivers/usb/renesas_usbhs/mod.c

+10 −1
Original line number Diff line number Diff line
@@ -292,6 +292,14 @@ void usbhs_irq_callback_update(struct usbhs_priv *priv, struct usbhs_mod *mod) 
	u16 intenb0 = 0;

	struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv);



	/*

	 * BEMPENB/BRDYENB are picky.

	 * below method is required

	 *

	 *  - clear  INTSTS0

	 *  - update BEMPENB/BRDYENB

	 *  - update INTSTS0

	 */

	usbhs_write(priv, INTENB0, 0);



	usbhs_write(priv, BEMPENB, 0);
@@ -324,5 +332,6 @@ void usbhs_irq_callback_update(struct usbhs_priv *priv, struct usbhs_mod *mod) 
		}

	}



	if (intenb0)

		usbhs_write(priv, INTENB0, intenb0);

}