修改4g拨号为QMI,需要在系统里后台执行quectel-CM

hc

2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5

 kernel/arch/xtensa/platforms/iss/include/platform/simcall.h
..
..
@@ -66,19 +66,17 @@
66
66
 
67
67
 static inline int __simc(int a, int b, int c, int d)
68
68
 {
69
-	int ret;
70
69
 	register int a1 asm("a2") = a;
71
70
 	register int b1 asm("a3") = b;
72
71
 	register int c1 asm("a4") = c;
73
72
 	register int d1 asm("a5") = d;
74
73
 	__asm__ __volatile__ (
75
74
 			"simcall\n"
76
-			"mov %0, a2\n"
77
-			"mov %1, a3\n"
78
-			: "=a" (ret), "=a" (errno), "+r"(a1), "+r"(b1)
75
+			: "+r"(a1), "+r"(b1)
79
76
 			: "r"(c1), "r"(d1)
80
77
 			: "memory");
81
-	return ret;
78
+	errno = b1;
79
+	return a1;
82
80
 }
83
81
 
84
82
 static inline int simc_exit(int exit_code)
..
..
@@ -113,9 +111,9 @@
113
111
 
114
112
 static inline int simc_poll(int fd)
115
113
 {
116
-	struct timeval tv = { .tv_sec = 0, .tv_usec = 0 };
114
+	long timeval[2] = { 0, 0 };
117
115
 
118
-	return __simc(SYS_select_one, fd, XTISS_SELECT_ONE_READ, (int)&tv);
116
+	return __simc(SYS_select_one, fd, XTISS_SELECT_ONE_READ, (int)&timeval);
119
117
 }
120
118
 
121
119
 static inline int simc_lseek(int fd, uint32_t off, int whence)