* 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 <mferrell@xxxxxxxxxxx>
---
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;
--
tg: (8a7298b..) usb/serial/mos7840/chars_in_buf (depends on: master)
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