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-rw-r--r--target/linux/xburst/patches-3.2/0009-dev-mem-Add-kernel-config-option-to-omit-this-device.patch124
1 files changed, 0 insertions, 124 deletions
diff --git a/target/linux/xburst/patches-3.2/0009-dev-mem-Add-kernel-config-option-to-omit-this-device.patch b/target/linux/xburst/patches-3.2/0009-dev-mem-Add-kernel-config-option-to-omit-this-device.patch
deleted file mode 100644
index 28388fba76..0000000000
--- a/target/linux/xburst/patches-3.2/0009-dev-mem-Add-kernel-config-option-to-omit-this-device.patch
+++ /dev/null
@@ -1,124 +0,0 @@
-From 4003b9a2c05f4d0d37535c3dffbf4a7b47d5c36c Mon Sep 17 00:00:00 2001
-From: Maarten ter Huurne <maarten@treewalker.org>
-Date: Wed, 8 Sep 2010 02:31:19 +0200
-Subject: [PATCH 09/21] /dev/mem: Add kernel config option to omit this
- device.
-
-Omitting this device prevents software from accessing the hardware directly, which can cause trouble if the kernel accesses the same hardware.
-It also saves some space on embedded systems.
----
- arch/x86/Kconfig.debug | 1 +
- drivers/char/Kconfig | 10 ++++++++++
- drivers/char/mem.c | 17 +++++++++++++++++
- 3 files changed, 28 insertions(+), 0 deletions(-)
-
---- a/arch/x86/Kconfig.debug
-+++ b/arch/x86/Kconfig.debug
-@@ -7,6 +7,7 @@ source "lib/Kconfig.debug"
-
- config STRICT_DEVMEM
- bool "Filter access to /dev/mem"
-+ depends on DEVMEM
- ---help---
- If this option is disabled, you allow userspace (root) access to all
- of memory, including kernel and userspace memory. Accidental
---- a/drivers/char/Kconfig
-+++ b/drivers/char/Kconfig
-@@ -6,6 +6,16 @@ menu "Character devices"
-
- source "drivers/tty/Kconfig"
-
-+config DEVMEM
-+ bool "/dev/mem virtual device support"
-+ default y
-+ help
-+ Say Y here if you want to support the /dev/mem device.
-+ Some X server drivers access the video hardware using this device.
-+ Accessing hardware directly from user space can be useful in some
-+ cases, but it is not without risks.
-+ When in doubt, say "N".
-+
- config DEVKMEM
- bool "/dev/kmem virtual device support"
- default y
---- a/drivers/char/mem.c
-+++ b/drivers/char/mem.c
-@@ -87,6 +87,8 @@ void __weak unxlate_dev_mem_ptr(unsigned
- {
- }
-
-+#ifdef CONFIG_DEVMEM
-+
- /*
- * This funcion reads the *physical* memory. The f_pos points directly to the
- * memory location.
-@@ -210,6 +212,10 @@ static ssize_t write_mem(struct file *fi
- return written;
- }
-
-+#endif
-+
-+#if defined(CONFIG_DEVMEM) || defined(CONFIG_DEVKMEM)
-+
- int __weak phys_mem_access_prot_allowed(struct file *file,
- unsigned long pfn, unsigned long size, pgprot_t *vma_prot)
- {
-@@ -331,6 +337,8 @@ static int mmap_mem(struct file *file, s
- return 0;
- }
-
-+#endif
-+
- #ifdef CONFIG_DEVKMEM
- static int mmap_kmem(struct file *file, struct vm_area_struct *vma)
- {
-@@ -694,6 +702,7 @@ static loff_t null_lseek(struct file *fi
- return file->f_pos = 0;
- }
-
-+#if defined(CONFIG_DEVMEM) || defined(CONFIG_DEVKMEM) || defined(CONFIG_DEVPORT)
- /*
- * The memory devices use the full 32/64 bits of the offset, and so we cannot
- * check against negative addresses: they are ok. The return value is weird,
-@@ -726,11 +735,15 @@ static loff_t memory_lseek(struct file *
- mutex_unlock(&file->f_path.dentry->d_inode->i_mutex);
- return ret;
- }
-+#endif
-
-+#if defined(CONFIG_DEVMEM) || defined(CONFIG_DEVKMEM) || \
-+ defined(CONFIG_DEVPORT) || defined(CONFIG_CRASH_DUMP)
- static int open_port(struct inode * inode, struct file * filp)
- {
- return capable(CAP_SYS_RAWIO) ? 0 : -EPERM;
- }
-+#endif
-
- #define zero_lseek null_lseek
- #define full_lseek null_lseek
-@@ -740,6 +753,7 @@ static int open_port(struct inode * inod
- #define open_kmem open_mem
- #define open_oldmem open_mem
-
-+#ifdef CONFIG_DEVMEM
- static const struct file_operations mem_fops = {
- .llseek = memory_lseek,
- .read = read_mem,
-@@ -748,6 +762,7 @@ static const struct file_operations mem_
- .open = open_mem,
- .get_unmapped_area = get_unmapped_area_mem,
- };
-+#endif
-
- #ifdef CONFIG_DEVKMEM
- static const struct file_operations kmem_fops = {
-@@ -851,7 +866,9 @@ static const struct memdev {
- const struct file_operations *fops;
- struct backing_dev_info *dev_info;
- } devlist[] = {
-+#ifdef CONFIG_DEVMEM
- [1] = { "mem", 0, &mem_fops, &directly_mappable_cdev_bdi },
-+#endif
- #ifdef CONFIG_DEVKMEM
- [2] = { "kmem", 0, &kmem_fops, &directly_mappable_cdev_bdi },
- #endif