From a5969cabbb4660eab42b6ef0412cbbd1200cf14d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 12 Oct 2024 07:10:09 +0000
Subject: [PATCH] 修改led为gpio
---
kernel/arch/x86/include/asm/checksum_32.h | 43 +++++++++++++++----------------------------
1 files changed, 15 insertions(+), 28 deletions(-)
diff --git a/kernel/arch/x86/include/asm/checksum_32.h b/kernel/arch/x86/include/asm/checksum_32.h
index 7a659c7..17da953 100644
--- a/kernel/arch/x86/include/asm/checksum_32.h
+++ b/kernel/arch/x86/include/asm/checksum_32.h
@@ -27,9 +27,7 @@
* better 64-bit) boundary
*/
-asmlinkage __wsum csum_partial_copy_generic(const void *src, void *dst,
- int len, __wsum sum,
- int *src_err_ptr, int *dst_err_ptr);
+asmlinkage __wsum csum_partial_copy_generic(const void *src, void *dst, int len);
/*
* Note: when you get a NULL pointer exception here this means someone
@@ -38,24 +36,21 @@
* If you use these functions directly please don't forget the
* access_ok().
*/
-static inline __wsum csum_partial_copy_nocheck(const void *src, void *dst,
- int len, __wsum sum)
+static inline __wsum csum_partial_copy_nocheck(const void *src, void *dst, int len)
{
- return csum_partial_copy_generic(src, dst, len, sum, NULL, NULL);
+ return csum_partial_copy_generic(src, dst, len);
}
-static inline __wsum csum_partial_copy_from_user(const void __user *src,
- void *dst,
- int len, __wsum sum,
- int *err_ptr)
+static inline __wsum csum_and_copy_from_user(const void __user *src,
+ void *dst, int len)
{
__wsum ret;
might_sleep();
- stac();
- ret = csum_partial_copy_generic((__force void *)src, dst,
- len, sum, err_ptr, NULL);
- clac();
+ if (!user_access_begin(src, len))
+ return 0;
+ ret = csum_partial_copy_generic((__force void *)src, dst, len);
+ user_access_end();
return ret;
}
@@ -173,27 +168,19 @@
/*
* Copy and checksum to user
*/
-#define HAVE_CSUM_COPY_USER
static inline __wsum csum_and_copy_to_user(const void *src,
void __user *dst,
- int len, __wsum sum,
- int *err_ptr)
+ int len)
{
__wsum ret;
might_sleep();
- if (access_ok(VERIFY_WRITE, dst, len)) {
- stac();
- ret = csum_partial_copy_generic(src, (__force void *)dst,
- len, sum, NULL, err_ptr);
- clac();
- return ret;
- }
+ if (!user_access_begin(dst, len))
+ return 0;
- if (len)
- *err_ptr = -EFAULT;
-
- return (__force __wsum)-1; /* invalid checksum */
+ ret = csum_partial_copy_generic(src, (__force void *)dst, len);
+ user_access_end();
+ return ret;
}
#endif /* _ASM_X86_CHECKSUM_32_H */
--
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