This is a note to let you know that I've just added the patch titled
usb: serial: mos7840: Fixup mos7840_chars_in_buffer()
to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-linus branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will hopefully also be merged in Linus's tree for the
next -rc kernel release.
If you have any questions about this process, please let me know.
>From 5c263b92f828af6a8cf54041db45ceae5af8f2ab Mon Sep 17 00:00:00 2001
From: Mark Ferrell <[email protected]>
Date: Tue, 24 Jul 2012 14:15:13 -0500
Subject: usb: serial: mos7840: Fixup mos7840_chars_in_buffer()
* Use the buffer content length as opposed to the total buffer size. This can
be a real problem when using the mos7840 as a usb serial-console as all
kernel output is truncated during boot.
Signed-off-by: Mark Ferrell <[email protected]>
Cc: stable <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/usb/serial/mos7840.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index 57eca24..009c1d9 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -1232,9 +1232,12 @@ static int mos7840_chars_in_buffer(struct tty_struct
*tty)
return 0;
spin_lock_irqsave(&mos7840_port->pool_lock, flags);
- for (i = 0; i < NUM_URBS; ++i)
- if (mos7840_port->busy[i])
- chars += URB_TRANSFER_BUFFER_SIZE;
+ for (i = 0; i < NUM_URBS; ++i) {
+ if (mos7840_port->busy[i]) {
+ struct urb *urb = mos7840_port->write_urb_pool[i];
+ chars += urb->transfer_buffer_length;
+ }
+ }
spin_unlock_irqrestore(&mos7840_port->pool_lock, flags);
dbg("%s - returns %d", __func__, chars);
return chars;
--
1.7.10.1.362.g242cab3
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