[PATCH] USBATM: -EILSEQ workaround

Don't throttle on -EILSEQ urb status if requested by a minidriver.
It seems the ueagle modems are buggy, giving -EILSEQ when they
have no data to send.  The ueagle change will be sent separately
by the ueagle guys.  Patch by Matthieu Castet.

Signed-off-by: Duncan Sands <baldrick@free.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2 files changed, 5 insertions, 1 deletions

diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c
index c925e3a42672..5d339af16248 100644
--- a/drivers/usb/atm/usbatm.c
+++ b/drivers/usb/atm/usbatm.c
@@ -270,7 +270,10 @@ static void usbatm_complete(struct urb *urb, struct pt_regs *regs)
 
         spin_unlock_irqrestore(&channel->lock, flags);
 
-        if (unlikely(urb->status)) {
+        if (unlikely(urb->status) &&
+                        (!(channel->usbatm->flags & UDSL_IGNORE_EILSEQ) ||
+                         urb->status != -EILSEQ ))
+        {
                 if (printk_ratelimit())
                         atm_warn(channel->usbatm, "%s: urb 0x%p failed (%d)!\n",
                                 __func__, urb, urb->status);
diff --git a/drivers/usb/atm/usbatm.h b/drivers/usb/atm/usbatm.h
index bdff534b941d..1cf4767007de 100644
--- a/drivers/usb/atm/usbatm.h
+++ b/drivers/usb/atm/usbatm.h
@@ -88,6 +88,7 @@
 
 #define UDSL_SKIP_HEAVY_INIT    (1<<0)
 #define UDSL_USE_ISOC           (1<<1)
+#define UDSL_IGNORE_EILSEQ      (1<<2)
 
 
 /* mini driver */