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usb: renesas_usbhs: disable attch irq after device attached

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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;
}