serial: sh-sci: Improve comments for DMA timeout calculation

Reformat, grammar improvements, use "ms" instead of "msec".

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 340700a..cfef543 100644 (file)
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -2015,13 +2015,13 @@ static void sci_set_termios(struct uart_port *port, struct ktermios *termios,
 #ifdef CONFIG_SERIAL_SH_SCI_DMA
        /*
         * Calculate delay for 2 DMA buffers (4 FIFO).
-        * See serial_core.c::uart_update_timeout(). With 10
-        * bits (CS8), 250Hz, 115200 baud and 64 bytes FIFO, the above function
-        * calculates 1 jiffie for the data plus 5 jiffies for the "slop(e)."
-        * Then below we calculate 5 jiffies (20ms) for 2 DMA buffers (4 FIFO
-        * sizes), but when performing a faster transfer, value obtained by
-        * this formula is may not enough. Therefore, if value is smaller than
-        * 20msec, this sets 20msec as timeout of DMA.
+        * See serial_core.c::uart_update_timeout().
+        * With 10 bits (CS8), 250Hz, 115200 baud and 64 bytes FIFO, the above
+        * function calculates 1 jiffie for the data plus 5 jiffies for the
+        * "slop(e)." Then below we calculate 5 jiffies (20ms) for 2 DMA
+        * buffers (4 FIFO sizes), but when performing a faster transfer, the
+        * value obtained by this formula is too small. Therefore, if the value
+        * is smaller than 20ms, use 20ms as the timeout value for DMA.
         */
        if (s->chan_rx) {
                unsigned int bits;