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Commit 600624ec authored by Andy Duan's avatar Andy Duan Committed by Greg Kroah-Hartman
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tty: serial: fsl_lpuart: fix the wrong mapbase value 



[ Upstream commit d5c38948448abc2bb6b36dbf85a554bf4748885e ]

Register offset needs to be applied on mapbase also.
dma_tx/rx_request use the physical address of UARTDATA.
Register offset is currently only applied to membase (the
corresponding virtual addr) but not on mapbase.

Fixes: 24b1e5f0 ("tty: serial: lpuart: add imx7ulp support")
Reviewed-by: default avatarLeonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: default avatarAdriana Reus <adriana.reus@nxp.com>
Signed-off-by: default avatarSherry Sun <sherry.sun@nxp.com>
Signed-off-by: default avatarAndy Duan <fugang.duan@nxp.com>
Link: https://lore.kernel.org/r/20210819021033.32606-1-sherry.sun@nxp.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent d4269f83

drivers/tty/serial/fsl_lpuart.c

+1 −1
Original line number Diff line number Diff line
@@ -2164,7 +2164,7 @@ static int lpuart_probe(struct platform_device *pdev) 
		return PTR_ERR(sport->port.membase);



	sport->port.membase += sdata->reg_off;

	sport->port.mapbase = res->start;

	sport->port.mapbase = res->start + sdata->reg_off;

	sport->port.dev = &pdev->dev;

	sport->port.type = PORT_LPUART;

	ret = platform_get_irq(pdev, 0);