On Wed, 10 Oct 2012 15:05:06 +0200 Jarkko Huijts <jarkko.huijts@xxxxxxxxxxxxxxxxx> wrote: > From: Jarkko Huijts <jarkko.huijts@xxxxxxxxx> > > The driver does not wait until the hardware buffer (for data from the PC to the > UART line) is drained when tcdrain or close is called in an application. > Solution: Implement a chars_in_buffer function that checks both the software > and hardware buffer. If the TEMT (TX empty) bit of the line status register > indicates the hw buffer is not empty, let the function return at least 1. This > has been verified to work correctly with an FT232RL. The check on the hw buffer > can not be done for the original SIO device. > > Signed-off-by: Jarkko Huijts <jarkko.huijts@xxxxxxxxx> Acked-by: Alan Cox <alan@xxxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
