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serial: max310x: change confusing comment about Tx FIFO

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The comment wording can be confusing, as txlen will return the number of
bytes available in the FIFO, which can be less than the maximum theoretical
Tx FIFO size.

Change the comment so that it is unambiguous.

Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Link: https://lore.kernel.org/r/20231122175957.3875102-1-hugo@hugovil.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Hugo Villeneuve 2023-11-22 12:59:56 -05:00 committed by Greg Kroah-Hartman
parent fffa35a25b
commit 1be5f0819c
1 changed files with 1 additions and 1 deletions
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2
drivers/tty/serial/max310x.c
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@ -780,7 +780,7 @@ static void max310x_handle_tx(struct uart_port *port)
to_send = uart_circ_chars_pending(xmit);
until_end = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
if (likely(to_send)) {
/* Limit to size of TX FIFO */
/* Limit to space available in TX FIFO */
txlen = max310x_port_read(port, MAX310X_TXFIFOLVL_REG);
txlen = port->fifosize - txlen;
to_send = (to_send > txlen) ? txlen : to_send;