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serial: ucc_uart: stub out soft_uart_init for !CONFIG_PPC32

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The Soft UART hack is only needed for some PPC-based SOCs. To allow
building this driver for non-PPC, guard soft_uart_init() and its
helpers by CONFIG_PPC32, and use a no-op soft_uart_init() otherwise.

Reviewed-by: Timur Tabi <timur@kernel.org>
Acked-by: Timur Tabi <timur@kernel.org>
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
This commit is contained in:
Rasmus Villemoes 2019-11-28 15:55:36 +01:00 committed by Li Yang
parent 96b6b6aaac
commit 002dedc5e9
1 changed files with 16 additions and 1 deletions
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17
drivers/tty/serial/ucc_uart.c
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@ -33,7 +33,10 @@
#include <linux/firmware.h>
#include <soc/fsl/cpm.h>
#include <asm/reg.h>
#ifdef CONFIG_PPC32
#include <asm/reg.h> /* mfspr, SPRN_SVR */
#endif
/*
* The GUMR flag for Soft UART. This would normally be defined in qe.h,
@ -1096,6 +1099,8 @@ static const struct uart_ops qe_uart_pops = {
.verify_port = qe_uart_verify_port,
};
#ifdef CONFIG_PPC32
/*
* Obtain the SOC model number and revision level
*
@ -1238,6 +1243,16 @@ static int soft_uart_init(struct platform_device *ofdev)
return 0;
}
#else /* !CONFIG_PPC32 */
static int soft_uart_init(struct platform_device *ofdev)
{
return 0;
}
#endif
static int ucc_uart_probe(struct platform_device *ofdev)
{
struct device_node *np = ofdev->dev.of_node;