From 50a212ec906f7524620675f0c57357691c26c81f Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 16 Oct 2024 01:20:19 +0000
Subject: [PATCH] 修改GPIO导出默认初始值
---
kernel/include/linux/compiler-gcc.h | 108 +++++++++++------------------------------------------
1 files changed, 23 insertions(+), 85 deletions(-)
diff --git a/kernel/include/linux/compiler-gcc.h b/kernel/include/linux/compiler-gcc.h
index 15aca9a..ae2de4e 100644
--- a/kernel/include/linux/compiler-gcc.h
+++ b/kernel/include/linux/compiler-gcc.h
@@ -10,8 +10,9 @@
+ __GNUC_MINOR__ * 100 \
+ __GNUC_PATCHLEVEL__)
-#if GCC_VERSION < 40600
-# error Sorry, your compiler is too old - please upgrade it.
+/* https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58145 */
+#if GCC_VERSION < 40900
+# error Sorry, your version of GCC is too old - please use 4.9 or newer.
#elif defined(CONFIG_ARM64) && GCC_VERSION < 50100
/*
* https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63293
@@ -45,37 +46,17 @@
(typeof(ptr)) (__ptr + (off)); \
})
-/*
- * A trick to suppress uninitialized variable warning without generating any
- * code
- */
-#define uninitialized_var(x) x = x
-
-#ifdef __CHECKER__
-#define __must_be_array(a) 0
-#else
-/* &a[0] degrades to a pointer: a different type from an array */
-#define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0]))
-#endif
-
#ifdef CONFIG_RETPOLINE
-#define __noretpoline __attribute__((indirect_branch("keep")))
+#define __noretpoline __attribute__((__indirect_branch__("keep")))
#endif
#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
-#define __optimize(level) __attribute__((__optimize__(level)))
-
#define __compiletime_object_size(obj) __builtin_object_size(obj, 0)
-#ifndef __CHECKER__
-#define __compiletime_warning(message) __attribute__((warning(message)))
-#define __compiletime_error(message) __attribute__((error(message)))
-
-#ifdef LATENT_ENTROPY_PLUGIN
+#if defined(LATENT_ENTROPY_PLUGIN) && !defined(__CHECKER__)
#define __latent_entropy __attribute__((latent_entropy))
#endif
-#endif /* __CHECKER__ */
/*
* calling noreturn functions, __builtin_unreachable() and __builtin_trap()
@@ -90,10 +71,6 @@
* Mark a position in code as unreachable. This can be used to
* suppress control flow warnings after asm blocks that transfer
* control elsewhere.
- *
- * Early snapshots of gcc 4.5 don't support this and we can't detect
- * this in the preprocessor, but we can live with this because they're
- * unreleased. Really, we need to have autoconf for the kernel.
*/
#define unreachable() \
do { \
@@ -102,41 +79,12 @@
__builtin_unreachable(); \
} while (0)
-/* Mark a function definition as prohibited from being cloned. */
-#define __noclone __attribute__((__noclone__, __optimize__("no-tracer")))
-
#if defined(RANDSTRUCT_PLUGIN) && !defined(__CHECKER__)
#define __randomize_layout __attribute__((randomize_layout))
#define __no_randomize_layout __attribute__((no_randomize_layout))
/* This anon struct can add padding, so only enable it under randstruct. */
#define randomized_struct_fields_start struct {
#define randomized_struct_fields_end } __randomize_layout;
-#endif
-
-/*
- * When used with Link Time Optimization, gcc can optimize away C functions or
- * variables which are referenced only from assembly code. __visible tells the
- * optimizer that something else uses this function or variable, thus preventing
- * this.
- */
-#define __visible __attribute__((externally_visible))
-
-/* gcc version specific checks */
-
-#if GCC_VERSION >= 40900 && !defined(__CHECKER__)
-/*
- * __assume_aligned(n, k): Tell the optimizer that the returned
- * pointer can be assumed to be k modulo n. The second argument is
- * optional (default 0), so we use a variadic macro to make the
- * shorthand.
- *
- * Beware: Do not apply this to functions which may return
- * ERR_PTRs. Also, it is probably unwise to apply it to functions
- * returning extra information in the low bits (but in that case the
- * compiler should see some alignment anyway, when the return value is
- * massaged by 'flags = ptr & 3; ptr &= ~3;').
- */
-#define __assume_aligned(a, ...) __attribute__((__assume_aligned__(a, ## __VA_ARGS__)))
#endif
/*
@@ -157,9 +105,7 @@
#if defined(CONFIG_ARCH_USE_BUILTIN_BSWAP) && !defined(__CHECKER__)
#define __HAVE_BUILTIN_BSWAP32__
#define __HAVE_BUILTIN_BSWAP64__
-#if GCC_VERSION >= 40800
#define __HAVE_BUILTIN_BSWAP16__
-#endif
#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP && !__CHECKER__ */
#if GCC_VERSION >= 70000
@@ -170,40 +116,32 @@
#define KASAN_ABI_VERSION 3
#endif
-/*
- * Older GCCs (< 5) don't support __has_attribute, so instead of checking
- * __has_attribute(__no_sanitize_address__) do a GCC version check.
- */
-#ifndef __has_attribute
-# define __has_attribute(x) __GCC4_has_attribute_##x
-# define __GCC4_has_attribute___no_sanitize_address__ (__GNUC_MINOR__ >= 8)
-#endif
-
#if __has_attribute(__no_sanitize_address__)
#define __no_sanitize_address __attribute__((no_sanitize_address))
#else
#define __no_sanitize_address
#endif
+#if defined(__SANITIZE_THREAD__) && __has_attribute(__no_sanitize_thread__)
+#define __no_sanitize_thread __attribute__((no_sanitize_thread))
+#else
+#define __no_sanitize_thread
+#endif
+
+#if __has_attribute(__no_sanitize_undefined__)
+#define __no_sanitize_undefined __attribute__((no_sanitize_undefined))
+#else
+#define __no_sanitize_undefined
+#endif
+
+#if defined(CONFIG_KCOV) && __has_attribute(__no_sanitize_coverage__)
+#define __no_sanitize_coverage __attribute__((no_sanitize_coverage))
+#else
+#define __no_sanitize_coverage
+#endif
+
#if GCC_VERSION >= 50100
-/*
- * Mark structures as requiring designated initializers.
- * https://gcc.gnu.org/onlinedocs/gcc/Designated-Inits.html
- */
-#define __designated_init __attribute__((designated_init))
#define COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW 1
-#endif
-
-#if GCC_VERSION >= 90100
-#define __copy(symbol) __attribute__((__copy__(symbol)))
-#endif
-
-#if !defined(__noclone)
-#define __noclone /* not needed */
-#endif
-
-#if !defined(__no_sanitize_address)
-#define __no_sanitize_address
#endif
/*
--
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