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Include linux/processor.h to fix build error: arch/mips/sgi-ip30/ip30-console.c: In function ‘prom_putchar’: arch/mips/sgi-ip30/ip30-console.c:21:17: error: implicit declaration of function ‘cpu_relax’ [-Werror=implicit-function-declaration] 21 | cpu_relax(); Cc: stable@vger.kernel.org Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
26 lines
466 B
C
26 lines
466 B
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/io.h>
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#include <linux/processor.h>
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#include <asm/sn/ioc3.h>
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#include <asm/setup.h>
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static inline struct ioc3_uartregs *console_uart(void)
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{
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struct ioc3 *ioc3;
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ioc3 = (struct ioc3 *)((void *)(0x900000001f600000));
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return &ioc3->sregs.uarta;
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}
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void prom_putchar(char c)
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{
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struct ioc3_uartregs *uart = console_uart();
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while ((readb(&uart->iu_lsr) & 0x20) == 0)
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cpu_relax();
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writeb(c, &uart->iu_thr);
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}
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