change otg to host mode

hc

2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777

 kernel/arch/arm/include/asm/syscall.h
..
..
@@ -55,56 +55,25 @@
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 static inline void syscall_get_arguments(struct task_struct *task,
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 					 struct pt_regs *regs,
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-					 unsigned int i, unsigned int n,
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 					 unsigned long *args)
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 {
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-	if (n == 0)
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-		return;
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+	args[0] = regs->ARM_ORIG_r0;
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+	args++;
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-	if (i + n > SYSCALL_MAX_ARGS) {
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-		unsigned long *args_bad = args + SYSCALL_MAX_ARGS - i;
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-		unsigned int n_bad = n + i - SYSCALL_MAX_ARGS;
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-		pr_warn("%s called with max args %d, handling only %d\n",
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-			__func__, i + n, SYSCALL_MAX_ARGS);
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-		memset(args_bad, 0, n_bad * sizeof(args[0]));
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-		n = SYSCALL_MAX_ARGS - i;
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-	}
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-
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-	if (i == 0) {
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-		args[0] = regs->ARM_ORIG_r0;
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-		args++;
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-		i++;
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-		n--;
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-	}
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-
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-	memcpy(args, &regs->ARM_r0 + i, n * sizeof(args[0]));
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+	memcpy(args, &regs->ARM_r0 + 1, 5 * sizeof(args[0]));
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 }
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 static inline void syscall_set_arguments(struct task_struct *task,
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 					 struct pt_regs *regs,
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-					 unsigned int i, unsigned int n,
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 					 const unsigned long *args)
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 {
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-	if (n == 0)
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-		return;
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+	regs->ARM_ORIG_r0 = args[0];
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+	args++;
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-	if (i + n > SYSCALL_MAX_ARGS) {
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-		pr_warn("%s called with max args %d, handling only %d\n",
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-			__func__, i + n, SYSCALL_MAX_ARGS);
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-		n = SYSCALL_MAX_ARGS - i;
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-	}
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-
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-	if (i == 0) {
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-		regs->ARM_ORIG_r0 = args[0];
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-		args++;
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-		i++;
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-		n--;
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-	}
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-
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-	memcpy(&regs->ARM_r0 + i, args, n * sizeof(args[0]));
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+	memcpy(&regs->ARM_r0 + 1, args, 5 * sizeof(args[0]));
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 }
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-static inline int syscall_get_arch(void)
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+static inline int syscall_get_arch(struct task_struct *task)
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 {
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 	/* ARM tasks don't change audit architectures on the fly. */
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 	return AUDIT_ARCH_ARM;