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| author | Julian Bradfield <jcb+luu@inf.ed.ac.uk> | 2006-03-01 13:19:44 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-03-21 01:50:00 +0300 |
| commit | 96050b11f690878c19c1cd39970ab7325d91e18b (patch) | |
| tree | b89853fd019eb3c0ded4dfbe612a816cc90346d5 /drivers/usb | |
| parent | a5c44e29e5637b5e6fe59d225eb4f438688b3849 (diff) | |
| download | linux-96050b11f690878c19c1cd39970ab7325d91e18b.tar.xz | |
[PATCH] USB: PL2303 and TIOCMIWAIT
A while ago, I posted about TIOCMIWAIT not working with the PL2303
USB-serial adapter.
After a brief exchange with Greg, I tracked this to a missing wake-up
in the USB interrupt procedures. I got our systems staff to install
the enclosed very simple patch to our 2.6.12 kernels, and it all works
fine as expected. I guess this should also apply to the latest version
and go into the mainstream.
Apologies for the long delay in posting the result.
The routine being patched is pl2303_update_line_status
Signed-off-by: Julian Bradfield <jcb+luu@inf.ed.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/serial/pl2303.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index cf2213bae0e0..fb3b6b7b9065 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -826,6 +826,7 @@ static void pl2303_update_line_status(struct usb_serial_port *port, spin_lock_irqsave(&priv->lock, flags); priv->line_status = data[status_idx]; spin_unlock_irqrestore(&priv->lock, flags); + wake_up_interruptible (&priv->delta_msr_wait); exit: return; |