Re: [PATCH] USB: cdc-acm: Prevent data loss when filling tty buffer.
From: Oliver Neukum
Date: Tue Mar 22 2011 - 03:43:10 EST
Am Montag, 21. März 2011, 16:52:25 schrieb Toby Gray:
> When sending large quantities of data through a CDC ACM channel it is possible
> for data to be lost when attempting to copy the data to the tty buffer. This
> occurs due to the return value from tty_insert_flip_string not being checked.
>
> This patch adds checking for how many bytes have been inserted into the tty
> buffer and returns any remaining bytes back to the filled read buffer list.
>
Have you tested whether the driver recovers from running out of buffers?
Other than that it is looking good to me.
Regards
Oliver
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/