add wifi6 8852be driver

hc

2024-12-19 9370bb92b2d16684ee45cf24e879c93c509162da

 kernel/arch/s390/include/asm/uaccess.h
..
..
@@ -31,9 +31,8 @@
31
31
 #define USER_DS		(2)
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 #define USER_DS_SACF	(3)
33
33
 
34
-#define get_ds()        (KERNEL_DS)
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 #define get_fs()        (current->thread.mm_segment)
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-#define segment_eq(a,b) (((a) & 2) == ((b) & 2))
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+#define uaccess_kernel() ((get_fs() & 2) == KERNEL_DS)
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36
 
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 void set_fs(mm_segment_t fs);
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38
 
..
..
@@ -48,7 +47,7 @@
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 	__range_ok((unsigned long)(addr), (size));	\
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 })
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49
 
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-#define access_ok(type, addr, size) __access_ok(addr, size)
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+#define access_ok(addr, size) __access_ok(addr, size)
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51
 
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 unsigned long __must_check
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53
 raw_copy_from_user(void *to, const void __user *from, unsigned long n);
..
..
@@ -60,6 +59,9 @@
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 #define INLINE_COPY_FROM_USER
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 #define INLINE_COPY_TO_USER
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 #endif
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+
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+int __put_user_bad(void) __attribute__((noreturn));
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+int __get_user_bad(void) __attribute__((noreturn));
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65
 
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 #ifdef CONFIG_HAVE_MARCH_Z10_FEATURES
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67
 
..
..
@@ -110,6 +112,9 @@
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 					(unsigned long *)x,
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 					size, spec);
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 		break;
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+	default:
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+		__put_user_bad();
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+		break;
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 	}
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 	return rc;
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 }
..
..
@@ -139,6 +144,9 @@
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 		rc = __put_get_user_asm((unsigned long *)x,
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 					(unsigned long __user *)ptr,
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 					size, spec);
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+		break;
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+	default:
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+		__get_user_bad();
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 		break;
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151
 	}
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 	return rc;
..
..
@@ -180,7 +188,7 @@
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 	default:						\
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 		__put_user_bad();				\
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 		break;						\
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-	 }							\
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+	}							\
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 	__builtin_expect(__pu_err, 0);				\
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 })
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194
 
..
..
@@ -190,8 +198,6 @@
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 	__put_user(x, ptr);					\
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 })
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200
 
193
-
194
-int __put_user_bad(void) __attribute__((noreturn));
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201
 
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 #define __get_user(x, ptr)					\
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 ({								\
..
..
@@ -239,8 +245,6 @@
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 	__get_user(x, ptr);					\
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246
 })
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247
 
242
-int __get_user_bad(void) __attribute__((noreturn));
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-
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 unsigned long __must_check
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249
 raw_copy_in_user(void __user *to, const void __user *from, unsigned long n);
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250
 
..
..
@@ -277,6 +281,117 @@
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 }
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282
 
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 int copy_to_user_real(void __user *dest, void *src, unsigned long count);
280
-void s390_kernel_write(void *dst, const void *src, size_t size);
284
+void *s390_kernel_write(void *dst, const void *src, size_t size);
285
+
286
+#define HAVE_GET_KERNEL_NOFAULT
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+
288
+int __noreturn __put_kernel_bad(void);
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+
290
+#define __put_kernel_asm(val, to, insn)					\
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+({									\
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+	int __rc;							\
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+									\
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+	asm volatile(							\
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+		"0:   " insn "  %2,%1\n"				\
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+		"1:	xr	%0,%0\n"				\
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+		"2:\n"							\
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+		".pushsection .fixup, \"ax\"\n"				\
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+		"3:	lhi	%0,%3\n"				\
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+		"	jg	2b\n"					\
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+		".popsection\n"						\
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+		EX_TABLE(0b,3b) EX_TABLE(1b,3b)				\
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+		: "=d" (__rc), "+Q" (*(to))				\
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+		: "d" (val), "K" (-EFAULT)				\
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+		: "cc");						\
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+	__rc;								\
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+})
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+
309
+#define __put_kernel_nofault(dst, src, type, err_label)			\
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+do {									\
311
+	u64 __x = (u64)(*((type *)(src)));				\
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+	int __pk_err;							\
313
+									\
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+	switch (sizeof(type)) {						\
315
+	case 1:								\
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+		__pk_err = __put_kernel_asm(__x, (type *)(dst), "stc"); \
317
+		break;							\
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+	case 2:								\
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+		__pk_err = __put_kernel_asm(__x, (type *)(dst), "sth"); \
320
+		break;							\
321
+	case 4:								\
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+		__pk_err = __put_kernel_asm(__x, (type *)(dst), "st");	\
323
+		break;							\
324
+	case 8:								\
325
+		__pk_err = __put_kernel_asm(__x, (type *)(dst), "stg"); \
326
+		break;							\
327
+	default:							\
328
+		__pk_err = __put_kernel_bad();				\
329
+		break;							\
330
+	}								\
331
+	if (unlikely(__pk_err))						\
332
+		goto err_label;						\
333
+} while (0)
334
+
335
+int __noreturn __get_kernel_bad(void);
336
+
337
+#define __get_kernel_asm(val, from, insn)				\
338
+({									\
339
+	int __rc;							\
340
+									\
341
+	asm volatile(							\
342
+		"0:   " insn "  %1,%2\n"				\
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+		"1:	xr	%0,%0\n"				\
344
+		"2:\n"							\
345
+		".pushsection .fixup, \"ax\"\n"				\
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+		"3:	lhi	%0,%3\n"				\
347
+		"	jg	2b\n"					\
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+		".popsection\n"						\
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+		EX_TABLE(0b,3b) EX_TABLE(1b,3b)				\
350
+		: "=d" (__rc), "+d" (val)				\
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+		: "Q" (*(from)), "K" (-EFAULT)				\
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+		: "cc");						\
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+	__rc;								\
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+})
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+
356
+#define __get_kernel_nofault(dst, src, type, err_label)			\
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+do {									\
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+	int __gk_err;							\
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+									\
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+	switch (sizeof(type)) {						\
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+	case 1: {							\
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+		u8 __x = 0;						\
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+									\
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+		__gk_err = __get_kernel_asm(__x, (type *)(src), "ic");	\
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+		*((type *)(dst)) = (type)__x;				\
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+		break;							\
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+	};								\
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+	case 2: {							\
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+		u16 __x = 0;						\
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+									\
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+		__gk_err = __get_kernel_asm(__x, (type *)(src), "lh");	\
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+		*((type *)(dst)) = (type)__x;				\
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+		break;							\
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+	};								\
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+	case 4: {							\
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+		u32 __x = 0;						\
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+									\
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+		__gk_err = __get_kernel_asm(__x, (type *)(src), "l");	\
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+		*((type *)(dst)) = (type)__x;				\
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+		break;							\
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+	};								\
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+	case 8: {							\
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+		u64 __x = 0;						\
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+									\
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+		__gk_err = __get_kernel_asm(__x, (type *)(src), "lg");	\
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+		*((type *)(dst)) = (type)__x;				\
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+		break;							\
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+	};								\
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+	default:							\
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+		__gk_err = __get_kernel_bad();				\
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+		break;							\
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+	}								\
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+	if (unlikely(__gk_err))						\
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+		goto err_label;						\
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+} while (0)
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 #endif /* __S390_UACCESS_H */