From: 黄涛 <huangtao@rock-chips.com>
Date: Sat, 30 Jul 2011 14:16:34 +0000 (+0800)
Subject: Revert "binder: Fix memory corruption via page aliasing"
X-Git-Tag: firefly_0821_release~10019
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=2870cfe3d5c8de918dfa244a980b424c0fa5231c;p=firefly-linux-kernel-4.4.55.git

Revert "binder: Fix memory corruption via page aliasing"

This reverts commit 6bdee543a3281e7d53e2902fedae529ced5e0c7e.
---

diff --git a/drivers/staging/android/binder.c b/drivers/staging/android/binder.c
index 17e5c24eae16..cd53c64f7395 100644
--- a/drivers/staging/android/binder.c
+++ b/drivers/staging/android/binder.c
@@ -3026,14 +3026,11 @@ static void binder_deferred_release(struct binder_proc *proc)
 		int i;
 		for (i = 0; i < proc->buffer_size / PAGE_SIZE; i++) {
 			if (proc->pages[i]) {
-				void *page_addr = proc->buffer + i * PAGE_SIZE;
 				binder_debug(BINDER_DEBUG_BUFFER_ALLOC,
 					     "binder_release: %d: "
 					     "page %d at %p not freed\n",
 					     proc->pid, i,
-					     page_addr);
-				unmap_kernel_range((unsigned long)page_addr,
-					PAGE_SIZE);
+					     proc->buffer + i * PAGE_SIZE);
 				__free_page(proc->pages[i]);
 				page_count++;
 			}