From 8894298105f4cb41dfa41e0b0d3c40c3f7b92c44 Mon Sep 17 00:00:00 2001 From: Phil Elwell Date: Thu, 19 Sep 2024 18:22:24 +0100 Subject: [PATCH] serial: pl011: Request a memory width of 1 byte In order to avoid losing residue bytes when a receive is terminated early, set the destination width to single bytes. Link: https://github.com/raspberrypi/linux/issues/6365 Signed-off-by: Phil Elwell --- drivers/tty/serial/amba-pl011.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -468,6 +468,7 @@ static void pl011_dma_probe(struct uart_ .src_addr = uap->port.mapbase + pl011_reg_to_offset(uap, REG_DR), .src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE, + .dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE, .direction = DMA_DEV_TO_MEM, .src_maxburst = uap->fifosize >> 2, .device_fc = false,