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| author | Johan Hovold <jhovold@gmail.com> | 2014-03-12 19:09:38 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <greg@kroah.com> | 2014-03-12 12:44:49 -0700 |
| commit | 5083fd7bdfe6760577235a724cf6dccae13652c2 (patch) | |
| tree | dacbaeeebe30e17afab70cbb344305e212a77ba0 /drivers/usb | |
| parent | d7c933ae7da0d0b112bfc7e86424d780aaeb2d2c (diff) | |
| download | linux-5083fd7bdfe6760577235a724cf6dccae13652c2.tar.gz linux-5083fd7bdfe6760577235a724cf6dccae13652c2.tar.bz2 linux-5083fd7bdfe6760577235a724cf6dccae13652c2.zip | |
USB: serial: make bulk_out_size a lower limit
Drivers are allowed to override the default bulk-out buffer size
(endpoint maximum packet size) in order to increase throughput, but it
does not make much sense to allow buffers smaller than the default.
Note that this is already how bulk_in_size is defined.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/serial/usb-serial.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 7c9dc28640bb..c68fc9fb7598 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -923,9 +923,8 @@ static int usb_serial_probe(struct usb_interface *interface, port = serial->port[i]; if (kfifo_alloc(&port->write_fifo, PAGE_SIZE, GFP_KERNEL)) goto probe_error; - buffer_size = serial->type->bulk_out_size; - if (!buffer_size) - buffer_size = usb_endpoint_maxp(endpoint); + buffer_size = max_t(int, serial->type->bulk_out_size, + usb_endpoint_maxp(endpoint)); port->bulk_out_size = buffer_size; port->bulk_out_endpointAddress = endpoint->bEndpointAddress; |