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Subject[PATCH 3.4 006/176] USB: keyspan: fix overrun-error reporting
Date
From: Johan Hovold <johan@kernel.org>

3.4.107-rc1 review patch. If anyone has any objections, please let me know.

------------------


commit 855515a6d3731242d85850a206f2ec084c917338 upstream.

Fix reporting of overrun errors, which are not associated with a
character. Instead insert a null character and report only once.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Johan Hovold <johan@kernel.org>
[lizf: Backported to 3.4:
- s/&port->port/tty
- adjust context
- adjust indentation]
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
drivers/usb/serial/keyspan.c | 19 +++++++++----------
1 file changed, 9 insertions(+), 10 deletions(-)

diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c
index 5704ced..0879ac7 100644
--- a/drivers/usb/serial/keyspan.c
+++ b/drivers/usb/serial/keyspan.c
@@ -323,12 +323,11 @@ static void usa26_indat_callback(struct urb *urb)
if ((data[0] & 0x80) == 0) {
/* no errors on individual bytes, only
possible overrun err */
- if (data[0] & RXERROR_OVERRUN)
- err = TTY_OVERRUN;
- else
- err = 0;
+ if (data[0] & RXERROR_OVERRUN) {
+ tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ }
for (i = 1; i < urb->actual_length ; ++i)
- tty_insert_flip_char(tty, data[i], err);
+ tty_insert_flip_char(tty, data[i], TTY_NORMAL);
} else {
/* some bytes had errors, every byte has status */
dbg("%s - RX error!!!!", __func__);
@@ -859,13 +858,13 @@ static void usa90_indat_callback(struct urb *urb)
if ((data[0] & 0x80) == 0) {
/* no errors on individual bytes, only
possible overrun err*/
- if (data[0] & RXERROR_OVERRUN)
- err = TTY_OVERRUN;
- else
- err = 0;
+ if (data[0] & RXERROR_OVERRUN) {
+ tty_insert_flip_char(tty, 0,
+ TTY_OVERRUN);
+ }
for (i = 1; i < urb->actual_length ; ++i)
tty_insert_flip_char(tty, data[i],
- err);
+ TTY_NORMAL);
} else {
/* some bytes had errors, every byte has status */
dbg("%s - RX error!!!!", __func__);
--
1.9.1


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