serial: sirf: correct the fifo empty_bit

Signed-off-by: Qipan Li <Qipan.Li@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
git-mirror · May 31, 2015 · 86459b0 · 86459b0
1 parent 326707e
commit 86459b0
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/tty/serial/sirfsoc_uart.h b/drivers/tty/serial/sirfsoc_uart.h
@@ -117,7 +117,7 @@ u32 uart_usp_ff_empty_mask(struct uart_port *port)
 {
 	u32 empty_bit;
 
-	empty_bit = ilog2(port->fifosize);
+	empty_bit = ilog2(port->fifosize) + 1;
 	return (1 << empty_bit);
 }
 struct sirfsoc_uart_register sirfsoc_usp = {