This is a note to let you know that I've just added the patch titled
USB: mos7840: fix broken TIOCMIWAIT
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 e670c6af12517d08a403487b1122eecf506021cf Mon Sep 17 00:00:00 2001
From: Johan Hovold <[email protected]>
Date: Tue, 19 Mar 2013 09:21:19 +0100
Subject: USB: mos7840: fix broken TIOCMIWAIT
Make sure waiting processes are woken on modem-status changes.
Currently processes are only woken on termios changes regardless of
whether the modem status has changed.
Cc: stable <[email protected]>
Signed-off-by: Johan Hovold <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/usb/serial/mos7840.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index 809fb32..1b83b01 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -423,6 +423,9 @@ static void mos7840_handle_new_msr(struct moschip_port
*port, __u8 new_msr)
icount->rng++;
smp_wmb();
}
+
+ mos7840_port->delta_msr_cond = 1;
+ wake_up_interruptible(&mos7840_port->delta_msr_wait);
}
}
@@ -2017,8 +2020,6 @@ static void mos7840_change_port_settings(struct
tty_struct *tty,
mos7840_port->read_urb_busy = false;
}
}
- wake_up(&mos7840_port->delta_msr_wait);
- mos7840_port->delta_msr_cond = 1;
dev_dbg(&port->dev, "%s - mos7840_port->shadowLCR is End %x\n",
__func__,
mos7840_port->shadowLCR);
}
--
1.8.0.rc0.18.gf84667d
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