kernel_5.10 no rt

hc

2023-12-11 6778948f9de86c3cfaf36725a7c87dcff9ba247f

 kernel/arch/m68k/include/asm/raw_io.h
..
..
@@ -80,14 +80,14 @@
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 	({ u16 __v = le16_to_cpu(*(__force volatile u16 *) (addr)); __v; })
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 #define rom_out_8(addr, b)	\
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-	({u8 __w, __v = (b);  u32 _addr = ((u32) (addr)); \
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+	(void)({u8 __maybe_unused __w, __v = (b);  u32 _addr = ((u32) (addr)); \
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 	__w = ((*(__force volatile u8 *)  ((_addr | 0x10000) + (__v<<1)))); })
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 #define rom_out_be16(addr, w)	\
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-	({u16 __w, __v = (w); u32 _addr = ((u32) (addr)); \
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+	(void)({u16 __maybe_unused __w, __v = (w); u32 _addr = ((u32) (addr)); \
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 	__w = ((*(__force volatile u16 *) ((_addr & 0xFFFF0000UL) + ((__v & 0xFF)<<1)))); \
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 	__w = ((*(__force volatile u16 *) ((_addr | 0x10000) + ((__v >> 8)<<1)))); })
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 #define rom_out_le16(addr, w)	\
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-	({u16 __w, __v = (w); u32 _addr = ((u32) (addr)); \
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+	(void)({u16 __maybe_unused __w, __v = (w); u32 _addr = ((u32) (addr)); \
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 	__w = ((*(__force volatile u16 *) ((_addr & 0xFFFF0000UL) + ((__v >> 8)<<1)))); \
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 	__w = ((*(__force volatile u16 *) ((_addr | 0x10000) + ((__v & 0xFF)<<1)))); })
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..
..
@@ -107,12 +107,43 @@
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 }
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 static inline void raw_outsb(volatile u8 __iomem *port, const u8 *buf,
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-			     unsigned int len)
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+			     unsigned int nr)
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 {
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-	unsigned int i;
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+	unsigned int tmp;
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-        for (i = 0; i < len; i++)
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-		out_8(port, *buf++);
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+	if (nr & 15) {
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+		tmp = (nr & 15) - 1;
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+		asm volatile (
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+			"1: moveb %0@+,%2@; dbra %1,1b"
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+			: "=a" (buf), "=d" (tmp)
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+			: "a" (port), "0" (buf),
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+			  "1" (tmp));
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+	}
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+	if (nr >> 4) {
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+		tmp = (nr >> 4) - 1;
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+		asm volatile (
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+			"1: "
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+			"moveb %0@+,%2@; "
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+			"moveb %0@+,%2@; "
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+			"moveb %0@+,%2@; "
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+			"moveb %0@+,%2@; "
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+			"moveb %0@+,%2@; "
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+			"moveb %0@+,%2@; "
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+			"moveb %0@+,%2@; "
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+			"moveb %0@+,%2@; "
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+			"moveb %0@+,%2@; "
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+			"moveb %0@+,%2@; "
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+			"moveb %0@+,%2@; "
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+			"moveb %0@+,%2@; "
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+			"moveb %0@+,%2@; "
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+			"moveb %0@+,%2@; "
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+			"moveb %0@+,%2@; "
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+			"moveb %0@+,%2@; "
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+			"dbra %1,1b"
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+			: "=a" (buf), "=d" (tmp)
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+			: "a" (port), "0" (buf),
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+			  "1" (tmp));
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+	}
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 }
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 static inline void raw_insw(volatile u16 __iomem *port, u16 *buf, unsigned int nr)