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authorJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>2011-11-12 16:46:13 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2011-11-14 15:52:11 -0800
commit770f0baaee0c511d0d466082e72815ed861e301f (patch)
treea3cb28c6f14dd7bc7dfab545660f46659ce56a38 /drivers
parent5dc2470c602da8851907ec18942cd876c3b4ecc1 (diff)
downloadvexpress-lsk-770f0baaee0c511d0d466082e72815ed861e301f.tar.gz
USB: at91: at91-ohci: fix set/get power
in commit aa6e52a35 we introduce the support of overcurrent notification but the set and get of the power without checking if the gpio is valid or not Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/usb/host/ohci-at91.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c
index ba3a46b78b7..95a9fec38e8 100644
--- a/drivers/usb/host/ohci-at91.c
+++ b/drivers/usb/host/ohci-at91.c
@@ -223,6 +223,9 @@ static void ohci_at91_usb_set_power(struct at91_usbh_data *pdata, int port, int
if (port < 0 || port >= 2)
return;
+ if (pdata->vbus_pin[port] <= 0)
+ return;
+
gpio_set_value(pdata->vbus_pin[port], !pdata->vbus_pin_inverted ^ enable);
}
@@ -231,6 +234,9 @@ static int ohci_at91_usb_get_power(struct at91_usbh_data *pdata, int port)
if (port < 0 || port >= 2)
return -EINVAL;
+ if (pdata->vbus_pin[port] <= 0)
+ return -EINVAL;
+
return gpio_get_value(pdata->vbus_pin[port]) ^ !pdata->vbus_pin_inverted;
}