From 31e00fd116cab296da2d12bc0b82a30a9fbdd681 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Thu, 8 Dec 2011 18:29:22 -0800 Subject: [PATCH] usb: renesas_usbhs: disable attch irq after device attached attch interrupt might happen infinitely on some USB hub (self power?). This patch disable attch irq after device attached, and enable it again when detach irq happen. Signed-off-by: Kuninori Morimoto Signed-off-by: Felipe Balbi --- drivers/usb/renesas_usbhs/mod_host.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/usb/renesas_usbhs/mod_host.c b/drivers/usb/renesas_usbhs/mod_host.c index 72ee8e55e717..c947d0aca9bf 100644 --- a/drivers/usb/renesas_usbhs/mod_host.c +++ b/drivers/usb/renesas_usbhs/mod_host.c @@ -1245,6 +1245,14 @@ static int usbhsh_irq_attch(struct usbhs_priv *priv, usbhsh_port_stat_set(hpriv, USB_PORT_STAT_CONNECTION); usbhsh_port_stat_set(hpriv, USB_PORT_STAT_C_CONNECTION << 16); + /* + * attch interrupt might happen infinitely on some device + * (on self power USB hub ?) + * disable it here. + */ + hpriv->mod.irq_attch = NULL; + usbhs_irq_callback_update(priv, &hpriv->mod); + return 0; } @@ -1259,6 +1267,12 @@ static int usbhsh_irq_dtch(struct usbhs_priv *priv, usbhsh_port_stat_clear(hpriv, USB_PORT_STAT_CONNECTION); usbhsh_port_stat_set(hpriv, USB_PORT_STAT_C_CONNECTION << 16); + /* + * enable attch interrupt again + */ + hpriv->mod.irq_attch = usbhsh_irq_attch; + usbhs_irq_callback_update(priv, &hpriv->mod); + return 0; } -- 2.20.1