Hello. I wrote:

Feeding 32-bit length cast down to 'u16' to min() to calculate the FIFO count
in musb_host_tx() risks sending a short packet prematurely for transfer sizes
over 64 KB. And although data transfer size shouldn't exceed 65535 bytes for
the control endpoint, making musb_h_ep0_continue() more robust WRT URBs with
possibly oversized buffer will not hurt either...

Signed-off-by: Sergei Shtylyov <[email protected]>

[...]

Index: linux-2.6/drivers/usb/musb/musb_host.c
===================================================================
--- linux-2.6.orig/drivers/usb/musb/musb_host.c
+++ linux-2.6/drivers/usb/musb/musb_host.c
@@ -936,8 +936,8 @@ static bool musb_h_ep0_continue(struct m
        switch (musb->ep0_stage) {
        case MUSB_EP0_IN:
                fifo_dest = urb->transfer_buffer + urb->actual_length;
-               fifo_count = min(len, ((u16) (urb->transfer_buffer_length
-                                       - urb->actual_length)));
+               fifo_count = min_t(size_t, len, urb->transfer_buffer_length -
+                                  urb->actual_length);
                if (fifo_count < len)
                        urb->status = -EOVERFLOW;
@@ -970,9 +970,9 @@ static bool musb_h_ep0_continue(struct m
                }
                /* FALLTHROUGH */
        case MUSB_EP0_OUT:
-               fifo_count = min(qh->maxpacket, ((u16)
-                               (urb->transfer_buffer_length
-                               - urb->actual_length)));
+               fifo_count = min_t(size_t, qh->maxpacket,
+                                  urb->transfer_buffer_length       -

   Oops, tab ISO space before -. Do I need to repost?

WBR, Sergei

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