x86: prepare arch/x86/kernel/ldt_32/64.c for merging

White space and coding style cleanups.

Change unsigned to int. There is no win when we compare mincount against pc->size,
which is an int as well. Casting pc->size to unsigned just might hide real problems.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/ldt_32.c b/arch/x86/kernel/ldt_32.c
index e366c5f..bb15753 100644 (file)
--- a/arch/x86/kernel/ldt_32.c
+++ b/arch/x86/kernel/ldt_32.c
@@ -27,8 +27,7 @@ static void flush_ldt(void *null)
 
 static int alloc_ldt(mm_context_t *pc, int mincount, int reload)
 {
-       void *oldldt;
-       void *newldt;
+       void *oldldt, *newldt;
        int oldsize;
 
        if (mincount <= pc->size)

diff --git a/arch/x86/kernel/ldt_64.c b/arch/x86/kernel/ldt_64.c
index d72dc7a..9590393 100644 (file)
--- a/arch/x86/kernel/ldt_64.c
+++ b/arch/x86/kernel/ldt_64.c
@@ -18,7 +18,7 @@
 #include <asm/system.h>
 #include <asm/ldt.h>
 #include <asm/desc.h>
-#include <asm/proto.h>
+#include <asm/mmu_context.h>
 
 #ifdef CONFIG_SMP
 static void flush_ldt(void *null)
@@ -28,13 +28,12 @@ static void flush_ldt(void *null)
 }
 #endif
 
-static int alloc_ldt(mm_context_t *pc, unsigned mincount, int reload)
+static int alloc_ldt(mm_context_t *pc, int mincount, int reload)
 {
-       void *oldldt;
-       void *newldt;
-       unsigned oldsize;
+       void *oldldt, *newldt;
+       int oldsize;
 
-       if (mincount <= (unsigned)pc->size)
+       if (mincount <= pc->size)
                return 0;
        oldsize = pc->size;
        mincount = (mincount + 511) & (~511);
@@ -56,13 +55,14 @@ static int alloc_ldt(mm_context_t *pc, unsigned mincount, int reload)
        wmb();
        pc->size = mincount;
        wmb();
+
        if (reload) {
 #ifdef CONFIG_SMP
                cpumask_t mask;
 
                preempt_disable();
-               mask = cpumask_of_cpu(smp_processor_id());
                load_LDT(pc);
+               mask = cpumask_of_cpu(smp_processor_id());
                if (!cpus_equal(current->mm->cpu_vm_mask, mask))
                        smp_call_function(flush_ldt, NULL, 1, 1);
                preempt_enable();
@@ -115,7 +115,7 @@ int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
 void destroy_context(struct mm_struct *mm)
 {
        if (mm->context.size) {
-               if ((unsigned)mm->context.size * LDT_ENTRY_SIZE > PAGE_SIZE)
+               if (mm->context.size * LDT_ENTRY_SIZE > PAGE_SIZE)
                        vfree(mm->context.ldt);
                else
                        kfree(mm->context.ldt);
@@ -170,18 +170,16 @@ static int read_default_ldt(void __user *ptr, unsigned long bytecount)
 
 static int write_ldt(void __user *ptr, unsigned long bytecount, int oldmode)
 {
-       struct task_struct *me = current;
-       struct mm_struct *mm = me->mm;
+       struct mm_struct *mm = current->mm;
        __u32 entry_1, entry_2;
        int error;
        struct user_desc ldt_info;
 
        error = -EINVAL;
-
        if (bytecount != sizeof(ldt_info))
                goto out;
        error = -EFAULT;
-       if (copy_from_user(&ldt_info, ptr, bytecount))
+       if (copy_from_user(&ldt_info, ptr, sizeof(ldt_info)))
                goto out;
 
        error = -EINVAL;
@@ -195,7 +193,7 @@ static int write_ldt(void __user *ptr, unsigned long bytecount, int oldmode)
        }
 
        mutex_lock(&mm->context.lock);
-       if (ldt_info.entry_number >= (unsigned)mm->context.size) {
+       if (ldt_info.entry_number >= mm->context.size) {
                error = alloc_ldt(&current->mm->context,
                                  ldt_info.entry_number + 1, 1);
                if (error < 0)