From 8efc440549087de41abadf62f4bde1d827135338 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Mon, 6 May 2024 13:40:18 +0200 Subject: serial: sh-sci: describe locking requirements for invalidating RXDMA Make sure everyone knows that calling this function needs protection. Signed-off-by: Wolfram Sang Link: https://lore.kernel.org/r/20240506114016.30498-8-wsa+renesas@sang-engineering.com Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/sh-sci.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/tty') diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index 4d34950268b9..7a7bc18e4705 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -1257,6 +1257,7 @@ static int sci_dma_rx_find_active(struct sci_port *s) return -1; } +/* Must only be called with uart_port_lock taken */ static void sci_dma_rx_chan_invalidate(struct sci_port *s) { unsigned int i; -- cgit v1.2.3