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LOONGSON_UART_BASE depends on EARLY_PRINTK || SERIAL_8250, but when neither of these Kconfig symbols is set, the kernel build has errors: ../arch/mips/loongson2ef/common/serial.c: In function 'serial_init': ../arch/mips/loongson2ef/common/serial.c:66:25: error: 'loongson_uart_base' undeclared (first use in this function) 66 | loongson_uart_base; ../arch/mips/loongson2ef/common/serial.c:66:25: note: each undeclared identifier is reported only once for each function it appears in ../arch/mips/loongson2ef/common/serial.c:68:41: error: '_loongson_uart_base' undeclared (first use in this function) 68 | (void __iomem *)_loongson_uart_base; Fix this by building serial.o only when one (or both) of these Kconfig symbols is enabled. Tested with: (a) EARLY_PRINTK=y, SERIAL_8250 not set; (b) EARLY_PRINTK=y, SERIAL_8250=y; (c) EARLY_PRINTK=y, SERIAL_8250=m. (d) EARLY_PRINTK not set, SERIAL_8250=y; (e) EARLY_PRINTK not set, SERIAL_8250=m; (f) EARLY_PRINTK not set, SERIAL_8250 not set. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reported-by: kernel test robot <lkp@intel.com> Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: linux-mips@vger.kernel.org Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
29 lines
579 B
Makefile
29 lines
579 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for loongson based machines.
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#
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obj-y += setup.o init.o env.o time.o reset.o irq.o \
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bonito-irq.o mem.o machtype.o platform.o
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obj-$(CONFIG_PCI) += pci.o
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#
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# Serial port support
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#
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obj-$(CONFIG_LOONGSON_UART_BASE) += serial.o
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obj-$(CONFIG_EARLY_PRINTK) += serial.o
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obj-$(CONFIG_LOONGSON_UART_BASE) += uart_base.o
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obj-$(CONFIG_LOONGSON_MC146818) += rtc.o
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#
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# Enable CS5536 Virtual Support Module(VSM) to virtulize the PCI configure
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# space
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#
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obj-$(CONFIG_CS5536) += cs5536/
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#
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# Suspend Support
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#
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obj-$(CONFIG_SUSPEND) += pm.o
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