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| author | Mike Frysinger <vapier@gentoo.org> | 2009-12-18 16:33:03 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-03-02 14:53:24 -0800 |
| commit | c312659c5ff1e54bac2d91e1ce1005d58784a7b5 (patch) | |
| tree | 4f8bc4dad83ec6473d51f8ea950ce78ac82a22ad /drivers/usb/serial/cypress_m8.c | |
| parent | 2805eb13c3b5be7bd6ec7380502bc054b570afd5 (diff) | |
| download | linux-c312659c5ff1e54bac2d91e1ce1005d58784a7b5.tar.gz linux-c312659c5ff1e54bac2d91e1ce1005d58784a7b5.tar.bz2 linux-c312659c5ff1e54bac2d91e1ce1005d58784a7b5.zip | |
USB: cypress_m8: allow unstable baud rates
I've got a crappy cypress converter here, and while running at higher
baud rates craps out on throughput, it works fine with lower ones.
While it'd be nice to simply use a lower baud rate, not all devices
can be configured this way, and it is possible to (slowly) interact
at higher rates by sending a byte at a time. So let people force
higher rates when they need it via a module parameter.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/serial/cypress_m8.c')
| -rw-r--r-- | drivers/usb/serial/cypress_m8.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c index 47a18193abad..60c200230bc8 100644 --- a/drivers/usb/serial/cypress_m8.c +++ b/drivers/usb/serial/cypress_m8.c @@ -73,6 +73,7 @@ static int debug; static int stats; static int interval; +static int unstable_bauds; /* * Version Information @@ -291,6 +292,9 @@ static int analyze_baud_rate(struct usb_serial_port *port, speed_t new_rate) struct cypress_private *priv; priv = usb_get_serial_port_data(port); + if (unstable_bauds) + return new_rate; + /* * The general purpose firmware for the Cypress M8 allows for * a maximum speed of 57600bps (I have no idea whether DeLorme @@ -1643,3 +1647,5 @@ module_param(stats, bool, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(stats, "Enable statistics or not"); module_param(interval, int, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(interval, "Overrides interrupt interval"); +module_param(unstable_bauds, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(unstable_bauds, "Allow unstable baud rates"); |