The handling of large output bulk transfers is broken; the same user
page is read over and over again. Fixed with this patch.
Cc: sta...@kernel.org
Acked-by: Peter Stuge <pe...@stuge.se>
Acked-by: Hans de Goede <hdego...@redhat.com>
Acked-by: Alan Stern <st...@rowland.harvard.edu>
Signed-off-by: Henrik Rydberg <rydb...@euromail.se>
---
Hi Greg,
Here is the formal and third version of the patch. Version two still
made me nervous, so I moved the increment to where it is clear that
the buffer pointer is never referenced again later in the function. I
still kept the ACKS, hope that is alright with everyone.
Thanks,
Henrik
drivers/usb/core/devio.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index ebb8a9d..7f75343 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -1348,6 +1348,7 @@ static int proc_do_submiturb(struct dev_state *ps, struct
usbdevfs_urb *uurb,
ret = -EFAULT;
goto error;
}
+ uurb->buffer += u;
}
totlen -= u;
}
--
1.7.12.2
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