From: Mike Isely Date: Wed, 30 Aug 2006 03:07:07 +0000 (-0500) Subject: cypress_m8: improve control endpoint error handling X-Git-Tag: v3.12-rc1~33671^2~17 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=48298e50e0f7dfc7273ebfaa37ffd225428e83ed;p=kernel%2Fkernel-generic.git cypress_m8: improve control endpoint error handling Fix usb core function error return checks to look for negative errno values, not positive errno values. This bug had rendered those checks useless. Also remove attempted error recovery on control endpoints for EPIPE - with control endpoints EPIPE does not indicate a halted endpoint so trying to recover with usb_clear_halt() is not the correct action. Signed-off-by: Mike Isely Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c index 741dcec..12a265c 100644 --- a/drivers/usb/serial/cypress_m8.c +++ b/drivers/usb/serial/cypress_m8.c @@ -367,9 +367,7 @@ static int cypress_serial_control (struct usb_serial_port *port, unsigned baud_m if (tries++ >= 3) break; - if (retval == EPIPE) - usb_clear_halt(port->serial->dev, 0x00); - } while (retval != 8 && retval != ENODEV); + } while (retval != 8 && retval != -ENODEV); if (retval != 8) err("%s - failed sending serial line settings - %d", __FUNCTION__, retval); @@ -394,9 +392,7 @@ static int cypress_serial_control (struct usb_serial_port *port, unsigned baud_m if (tries++ >= 3) break; - if (retval == EPIPE) - usb_clear_halt(port->serial->dev, 0x00); - } while (retval != 5 && retval != ENODEV); + } while (retval != 5 && retval != -ENODEV); if (retval != 5) { err("%s - failed to retrieve serial line settings - %d", __FUNCTION__, retval);