3 files changed, 12 insertions, 53 deletions

diff --git a/arch/xtensa/include/asm/pci.h b/arch/xtensa/include/asm/pci.h
index 66410acf18b..4609b0f15f1 100644
--- a/arch/xtensa/include/asm/pci.h
+++ b/arch/xtensa/include/asm/pci.h
@@ -56,14 +56,6 @@ struct pci_dev;
 
 #define PCI_DMA_BUS_IS_PHYS	(1)
 
-/* pci_unmap_{page,single} is a no-op, so */
-#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
-#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
-#define pci_unmap_addr(PTR, ADDR_NAME)		(0)
-#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL)	do { } while (0)
-#define pci_ubnmap_len(PTR, LEN_NAME)		(0)
-#define pci_unmap_len_set(PTR, LEN_NAME, VAL)	do { } while (0)
-
 /* Map a range of PCI memory or I/O space for a device into user space */
 int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
                         enum pci_mmap_state mmap_state, int write_combine);
diff --git a/arch/xtensa/include/asm/ptrace.h b/arch/xtensa/include/asm/ptrace.h
index 905e1e61965..3c549f79872 100644
--- a/arch/xtensa/include/asm/ptrace.h
+++ b/arch/xtensa/include/asm/ptrace.h
@@ -113,6 +113,7 @@ struct pt_regs {
 
 #include <variant/core.h>
 
+# define arch_has_single_step()	(1)
 # define task_pt_regs(tsk) ((struct pt_regs*) \
   (task_stack_page(tsk) + KERNEL_STACK_SIZE - (XCHAL_NUM_AREGS-16)*4) - 1)
 # define user_mode(regs) (((regs)->ps & 0x00000020)!=0)
diff --git a/arch/xtensa/kernel/ptrace.c b/arch/xtensa/kernel/ptrace.c
index 9486882ef0a..9d4e1ceb3f0 100644
--- a/arch/xtensa/kernel/ptrace.c
+++ b/arch/xtensa/kernel/ptrace.c
@@ -30,6 +30,17 @@
 #include <asm/elf.h>
 #include <asm/coprocessor.h>
 
+
+void user_enable_single_step(struct task_struct *child)
+{
+	child->ptrace |= PT_SINGLESTEP;
+}
+
+void user_disable_single_step(struct task_struct *child)
+{
+	child->ptrace &= ~PT_SINGLESTEP;
+}
+
 /*
  * Called by kernel/ptrace.c when detaching to disable single stepping.
  */
@@ -268,51 +279,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 		ret = ptrace_pokeusr(child, addr, data);
 		break;
 
-	/* continue and stop at next (return from) syscall */
-
-	case PTRACE_SYSCALL:
-	case PTRACE_CONT: /* restart after signal. */
-	{
-		ret = -EIO;
-		if (!valid_signal(data))
-			break;
-		if (request == PTRACE_SYSCALL)
-			set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-		else
-			clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-		child->exit_code = data;
-		/* Make sure the single step bit is not set. */
-		child->ptrace &= ~PT_SINGLESTEP;
-		wake_up_process(child);
-		ret = 0;
-		break;
-	}
-
-	/*
-	 * make the child exit.  Best I can do is send it a sigkill.
-	 * perhaps it should be put in the status that it wants to
-	 * exit.
-	 */
-	case PTRACE_KILL:
-		ret = 0;
-		if (child->exit_state == EXIT_ZOMBIE)	/* already dead */
-			break;
-		child->exit_code = SIGKILL;
-		child->ptrace &= ~PT_SINGLESTEP;
-		wake_up_process(child);
-		break;
-
-	case PTRACE_SINGLESTEP:
-		ret = -EIO;
-		if (!valid_signal(data))
-			break;
-		clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-		child->ptrace |= PT_SINGLESTEP;
-		child->exit_code = data;
-		wake_up_process(child);
-		ret = 0;
-		break;
-
 	case PTRACE_GETREGS:
 		ret = ptrace_getregs(child, (void __user *) data);
 		break;