import PULS_20160108

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / arm / include / asm / syscall.h

diff --git a/arch/arm/include/asm/syscall.h b/arch/arm/include/asm/syscall.h
index f1d96d4e8092a652aeb84f5825082a8f9064cd20..ed805f1d3785691fdb79eb36fbaa56b355766a21 100644 (file)
--- a/arch/arm/include/asm/syscall.h
+++ b/arch/arm/include/asm/syscall.h
@@ -57,6 +57,9 @@ static inline void syscall_get_arguments(struct task_struct *task,
                                         unsigned int i, unsigned int n,
                                         unsigned long *args)
 {
+       if (n == 0)
+               return;
+
        if (i + n > SYSCALL_MAX_ARGS) {
                unsigned long *args_bad = args + SYSCALL_MAX_ARGS - i;
                unsigned int n_bad = n + i - SYSCALL_MAX_ARGS;
@@ -81,6 +84,9 @@ static inline void syscall_set_arguments(struct task_struct *task,
                                         unsigned int i, unsigned int n,
                                         const unsigned long *args)
 {
+       if (n == 0)
+               return;
+
        if (i + n > SYSCALL_MAX_ARGS) {
                pr_warning("%s called with max args %d, handling only %d\n",
                           __func__, i + n, SYSCALL_MAX_ARGS);
@@ -97,8 +103,7 @@ static inline void syscall_set_arguments(struct task_struct *task,
        memcpy(&regs->ARM_r0 + i, args, n * sizeof(args[0]));
 }
 
-static inline int syscall_get_arch(struct task_struct *task,
-                                  struct pt_regs *regs)
+static inline int syscall_get_arch(void)
 {
        /* ARM tasks don't change audit architectures on the fly. */
        return AUDIT_ARCH_ARM;