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 <kuninori.morimoto.gx@xxxxxxxxxxx> --- v1 -> v2 - log comment was changed drivers/usb/renesas_usbhs/mod_host.c | 14 ++++++++++++++ 1 files changed, 14 insertions(+), 0 deletions(-) diff --git a/drivers/usb/renesas_usbhs/mod_host.c b/drivers/usb/renesas_usbhs/mod_host.c index 3455cb3..a970653 100644 --- a/drivers/usb/renesas_usbhs/mod_host.c +++ b/drivers/usb/renesas_usbhs/mod_host.c @@ -1248,6 +1248,14 @@ 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; } @@ -1262,6 +1270,12 @@ 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; } -- 1.7.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
