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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-11-14 08:11:29 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-11-14 08:11:29 +0100
commit8a0a8e1c42fdf656e7b729e9c468c2caa687adb7 (patch)
treebde58e16dd5e6912deccac7e41b9a95f05187ea6 /arch/sparc/lib/user_fixup.c
parentbb2d387c4d90f5b400b94a0fcb5aaef31dfc0789 (diff)
parenta25f0944ba9b1d8a6813fd6f1a86f1bd59ac25a6 (diff)
downloadlinux-8a0a8e1c42fdf656e7b729e9c468c2caa687adb7.tar.gz
linux-8a0a8e1c42fdf656e7b729e9c468c2caa687adb7.tar.xz
Merge 4.9-rc5 into usb-next
We want/need the USB fixes in here as well, for testing and merge issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/sparc/lib/user_fixup.c')
-rw-r--r--arch/sparc/lib/user_fixup.c71
1 files changed, 0 insertions, 71 deletions
diff --git a/arch/sparc/lib/user_fixup.c b/arch/sparc/lib/user_fixup.c
deleted file mode 100644
index ac96ae236709..000000000000
--- a/arch/sparc/lib/user_fixup.c
+++ /dev/null
@@ -1,71 +0,0 @@
-/* user_fixup.c: Fix up user copy faults.
- *
- * Copyright (C) 2004 David S. Miller <davem@redhat.com>
- */
-
-#include <linux/compiler.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/module.h>
-
-#include <asm/uaccess.h>
-
-/* Calculating the exact fault address when using
- * block loads and stores can be very complicated.
- *
- * Instead of trying to be clever and handling all
- * of the cases, just fix things up simply here.
- */
-
-static unsigned long compute_size(unsigned long start, unsigned long size, unsigned long *offset)
-{
- unsigned long fault_addr = current_thread_info()->fault_address;
- unsigned long end = start + size;
-
- if (fault_addr < start || fault_addr >= end) {
- *offset = 0;
- } else {
- *offset = fault_addr - start;
- size = end - fault_addr;
- }
- return size;
-}
-
-unsigned long copy_from_user_fixup(void *to, const void __user *from, unsigned long size)
-{
- unsigned long offset;
-
- size = compute_size((unsigned long) from, size, &offset);
- if (likely(size))
- memset(to + offset, 0, size);
-
- return size;
-}
-EXPORT_SYMBOL(copy_from_user_fixup);
-
-unsigned long copy_to_user_fixup(void __user *to, const void *from, unsigned long size)
-{
- unsigned long offset;
-
- return compute_size((unsigned long) to, size, &offset);
-}
-EXPORT_SYMBOL(copy_to_user_fixup);
-
-unsigned long copy_in_user_fixup(void __user *to, void __user *from, unsigned long size)
-{
- unsigned long fault_addr = current_thread_info()->fault_address;
- unsigned long start = (unsigned long) to;
- unsigned long end = start + size;
-
- if (fault_addr >= start && fault_addr < end)
- return end - fault_addr;
-
- start = (unsigned long) from;
- end = start + size;
- if (fault_addr >= start && fault_addr < end)
- return end - fault_addr;
-
- return size;
-}
-EXPORT_SYMBOL(copy_in_user_fixup);