change wifi driver to cypress

hc

2024-01-05 071106ecf68c401173c58808b1cf5f68cc50d390

 kernel/arch/s390/include/asm/extable.h
..
..
@@ -1,12 +1,20 @@
1
1
 /* SPDX-License-Identifier: GPL-2.0 */
2
2
 #ifndef __S390_EXTABLE_H
3
3
 #define __S390_EXTABLE_H
4
+
5
+#include <asm/ptrace.h>
6
+#include <linux/compiler.h>
7
+
4
8
 /*
5
- * The exception table consists of pairs of addresses: the first is the
6
- * address of an instruction that is allowed to fault, and the second is
7
- * the address at which the program should continue.  No registers are
8
- * modified, so it is entirely up to the continuation code to figure out
9
- * what to do.
9
+ * The exception table consists of three addresses:
10
+ *
11
+ * - Address of an instruction that is allowed to fault.
12
+ * - Address at which the program should continue.
13
+ * - Optional address of handler that takes pt_regs * argument and runs in
14
+ *   interrupt context.
15
+ *
16
+ * No registers are modified, so it is entirely up to the continuation code
17
+ * to figure out what to do.
10
18
  *
11
19
  * All the routines below use bits of fixup code that are out of line
12
20
  * with the main instruction path.  This means when everything is well,
..
..
@@ -17,13 +25,57 @@
17
25
 struct exception_table_entry
18
26
 {
19
27
 	int insn, fixup;
28
+	long handler;
20
29
 };
30
+
31
+extern struct exception_table_entry *__start_dma_ex_table;
32
+extern struct exception_table_entry *__stop_dma_ex_table;
33
+
34
+const struct exception_table_entry *s390_search_extables(unsigned long addr);
21
35
 
22
36
 static inline unsigned long extable_fixup(const struct exception_table_entry *x)
23
37
 {
24
38
 	return (unsigned long)&x->fixup + x->fixup;
25
39
 }
26
40
 
41
+typedef bool (*ex_handler_t)(const struct exception_table_entry *,
42
+			     struct pt_regs *);
43
+
44
+static inline ex_handler_t
45
+ex_fixup_handler(const struct exception_table_entry *x)
46
+{
47
+	if (likely(!x->handler))
48
+		return NULL;
49
+	return (ex_handler_t)((unsigned long)&x->handler + x->handler);
50
+}
51
+
52
+static inline bool ex_handle(const struct exception_table_entry *x,
53
+			     struct pt_regs *regs)
54
+{
55
+	ex_handler_t handler = ex_fixup_handler(x);
56
+
57
+	if (unlikely(handler))
58
+		return handler(x, regs);
59
+	regs->psw.addr = extable_fixup(x);
60
+	return true;
61
+}
62
+
27
63
 #define ARCH_HAS_RELATIVE_EXTABLE
28
64
 
65
+static inline void swap_ex_entry_fixup(struct exception_table_entry *a,
66
+				       struct exception_table_entry *b,
67
+				       struct exception_table_entry tmp,
68
+				       int delta)
69
+{
70
+	a->fixup = b->fixup + delta;
71
+	b->fixup = tmp.fixup - delta;
72
+	a->handler = b->handler;
73
+	if (a->handler)
74
+		a->handler += delta;
75
+	b->handler = tmp.handler;
76
+	if (b->handler)
77
+		b->handler -= delta;
78
+}
79
+#define swap_ex_entry_fixup swap_ex_entry_fixup
80
+
29
81
 #endif