From: Alan Stern Date: Fri, 4 May 2007 15:55:54 +0000 (-0400) Subject: USB: Make device reset stop retrying after disconnect X-Git-Tag: v2.6.23-rc1~1083^2~124 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dd4dd19e8d13e1e9bf8295bf71f132b511b130bf;p=linux-2.6 USB: Make device reset stop retrying after disconnect This patch (as898) changes the port reset code in the hub driver. If a connect change occurs, it is reported the same way as a disconnect (which of course is what it really is). It also changes usb_reset_device(), to prevent the routine from futilely retrying the reset after a disconnect has occurred. Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index d37ad083d5..f4ef7c2509 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -1539,9 +1539,9 @@ static int hub_port_wait_reset(struct usb_hub *hub, int port1, if (!(portstatus & USB_PORT_STAT_CONNECTION)) return -ENOTCONN; - /* bomb out completely if something weird happened */ + /* bomb out completely if the connection bounced */ if ((portchange & USB_PORT_STAT_C_CONNECTION)) - return -EINVAL; + return -ENOTCONN; /* if we`ve finished resetting, then break out of the loop */ if (!(portstatus & USB_PORT_STAT_RESET) && @@ -2974,7 +2974,7 @@ int usb_reset_device(struct usb_device *udev) * Other endpoints will be handled by re-enumeration. */ ep0_reinit(udev); ret = hub_port_init(parent_hub, udev, port1, i); - if (ret >= 0) + if (ret >= 0 || ret == -ENOTCONN || ret == -ENODEV) break; } clear_bit(port1, parent_hub->busy_bits);