change otg to host mode

hc

2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777

 kernel/arch/x86/include/asm/asm.h
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@@ -7,9 +7,11 @@
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 # define __ASM_FORM_RAW(x)     x
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 # define __ASM_FORM_COMMA(x) x,
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 #else
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-# define __ASM_FORM(x)	" " #x " "
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-# define __ASM_FORM_RAW(x)     #x
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-# define __ASM_FORM_COMMA(x) " " #x ","
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+#include <linux/stringify.h>
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+
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+# define __ASM_FORM(x)	" " __stringify(x) " "
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+# define __ASM_FORM_RAW(x)     __stringify(x)
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+# define __ASM_FORM_COMMA(x) " " __stringify(x) ","
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 #endif
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 #ifndef __x86_64__
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@@ -130,46 +132,26 @@
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 # define _ASM_EXTABLE(from, to)					\
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 	_ASM_EXTABLE_HANDLE(from, to, ex_handler_default)
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+# define _ASM_EXTABLE_UA(from, to)				\
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+	_ASM_EXTABLE_HANDLE(from, to, ex_handler_uaccess)
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+
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+# define _ASM_EXTABLE_CPY(from, to)				\
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+	_ASM_EXTABLE_HANDLE(from, to, ex_handler_copy)
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+
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 # define _ASM_EXTABLE_FAULT(from, to)				\
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 	_ASM_EXTABLE_HANDLE(from, to, ex_handler_fault)
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-# define _ASM_EXTABLE_EX(from, to)				\
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-	_ASM_EXTABLE_HANDLE(from, to, ex_handler_ext)
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-
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-# define _ASM_EXTABLE_REFCOUNT(from, to)			\
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-	_ASM_EXTABLE_HANDLE(from, to, ex_handler_refcount)
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-
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-# define _ASM_NOKPROBE(entry)					\
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+# ifdef CONFIG_KPROBES
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+#  define _ASM_NOKPROBE(entry)					\
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 	.pushsection "_kprobe_blacklist","aw" ;			\
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 	_ASM_ALIGN ;						\
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 	_ASM_PTR (entry);					\
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 	.popsection
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+# else
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+#  define _ASM_NOKPROBE(entry)
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+# endif
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-.macro ALIGN_DESTINATION
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-	/* check for bad alignment of destination */
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-	movl %edi,%ecx
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-	andl $7,%ecx
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-	jz 102f				/* already aligned */
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-	subl $8,%ecx
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-	negl %ecx
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-	subl %ecx,%edx
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-100:	movb (%rsi),%al
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-101:	movb %al,(%rdi)
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-	incq %rsi
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-	incq %rdi
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-	decl %ecx
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-	jnz 100b
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-102:
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-	.section .fixup,"ax"
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-103:	addl %ecx,%edx			/* ecx is zerorest also */
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-	jmp copy_user_handle_tail
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-	.previous
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-
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-	_ASM_EXTABLE(100b,103b)
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-	_ASM_EXTABLE(101b,103b)
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-	.endm
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-
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-#else
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+#else /* ! __ASSEMBLY__ */
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 # define _EXPAND_EXTABLE_HANDLE(x) #x
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 # define _ASM_EXTABLE_HANDLE(from, to, handler)			\
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 	" .pushsection \"__ex_table\",\"a\"\n"			\
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@@ -182,19 +164,17 @@
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 # define _ASM_EXTABLE(from, to)					\
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 	_ASM_EXTABLE_HANDLE(from, to, ex_handler_default)
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+# define _ASM_EXTABLE_UA(from, to)				\
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+	_ASM_EXTABLE_HANDLE(from, to, ex_handler_uaccess)
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+
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+# define _ASM_EXTABLE_CPY(from, to)				\
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+	_ASM_EXTABLE_HANDLE(from, to, ex_handler_copy)
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+
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 # define _ASM_EXTABLE_FAULT(from, to)				\
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 	_ASM_EXTABLE_HANDLE(from, to, ex_handler_fault)
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-# define _ASM_EXTABLE_EX(from, to)				\
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-	_ASM_EXTABLE_HANDLE(from, to, ex_handler_ext)
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-
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-# define _ASM_EXTABLE_REFCOUNT(from, to)			\
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-	_ASM_EXTABLE_HANDLE(from, to, ex_handler_refcount)
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-
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 /* For C file, we already have NOKPROBE_SYMBOL macro */
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-#endif
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-#ifndef __ASSEMBLY__
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 /*
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  * This output constraint should be used for any inline asm which has a "call"
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  * instruction.  Otherwise the asm may be inserted before the frame pointer
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@@ -203,6 +183,6 @@
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  */
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 register unsigned long current_stack_pointer asm(_ASM_SP);
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 #define ASM_CALL_CONSTRAINT "+r" (current_stack_pointer)
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-#endif
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+#endif /* __ASSEMBLY__ */
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 #endif /* _ASM_X86_ASM_H */