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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 <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Kuninori Morimoto 2011-12-08 18:29:22 -08:00 committed by Felipe Balbi
parent 3edeee3893
commit 31e00fd116
1 changed files with 14 additions and 0 deletions
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14
drivers/usb/renesas_usbhs/mod_host.c
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@ -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;
}