The driver already won't initialize a channel with a circular buffer;
the check in pl08x_prep_channel_resources() sees to that. Remove
circular buffer support for the time being.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>