Commit 5e40169f authored by Christophe JAILLET's avatar Christophe JAILLET Committed by Greg Kroah-Hartman
Browse files

tty: serial: fsl_lpuart: Constify struct lpuart_soc_data 



'struct lpuart_soc_data' are not modified in this driver.

Constifying these structures moves some data to a read-only section, so
increases overall security.

This also makes the code more consistent.

On a x86_64, with allmodconfig, as an example:
Before:
======
   text	   data	    bss	    dec	    hex	filename
 172668	  23470	    128	 196266	  2feaa	drivers/tty/serial/fsl_lpuart.o

After:
=====
   text	   data	    bss	    dec	    hex	filename
 172924	  23214	    128	 196266	  2feaa	drivers/tty/serial/fsl_lpuart.o

Signed-off-by: default avatarChristophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: default avatarSherry Sun <sherry.sun@nxp.com>
Link: https://lore.kernel.org/r/93dc860a06f92236db283c71be0640cc477b7291.1751092467.git.christophe.jaillet@wanadoo.fr


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d2db0d78

drivers/tty/serial/fsl_lpuart.c

+4 −4
Original line number Diff line number Diff line
@@ -318,27 +318,27 @@ static const struct lpuart_soc_data ls1028a_data = { 
	.rx_watermark = 0,

};



static struct lpuart_soc_data imx7ulp_data = {

static const struct lpuart_soc_data imx7ulp_data = {

	.devtype = IMX7ULP_LPUART,

	.iotype = UPIO_MEM32,

	.reg_off = IMX_REG_OFF,

	.rx_watermark = 1,

};



static struct lpuart_soc_data imx8ulp_data = {

static const struct lpuart_soc_data imx8ulp_data = {

	.devtype = IMX8ULP_LPUART,

	.iotype = UPIO_MEM32,

	.reg_off = IMX_REG_OFF,

	.rx_watermark = 3,

};



static struct lpuart_soc_data imx8qxp_data = {

static const struct lpuart_soc_data imx8qxp_data = {

	.devtype = IMX8QXP_LPUART,

	.iotype = UPIO_MEM32,

	.reg_off = IMX_REG_OFF,

	.rx_watermark = 7, /* A lower watermark is ideal for low baud rates. */

};

static struct lpuart_soc_data imxrt1050_data = {

static const struct lpuart_soc_data imxrt1050_data = {

	.devtype = IMXRT1050_LPUART,

	.iotype = UPIO_MEM32,

	.reg_off = IMX_REG_OFF,