Patch "drm/radeon: use post-decrement in error handling" has been added to the 4.4-stable tree

This is a note to let you know that I've just added the patch titled

drm/radeon: use post-decrement in error handling

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
drm-radeon-use-post-decrement-in-error-handling.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Rasmus Villemoes <[email protected]>
Date: Mon, 15 Feb 2016 19:41:47 +0100
Subject: drm/radeon: use post-decrement in error handling
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: Rasmus Villemoes <[email protected]>

commit bc3f5d8c4ca01555820617eb3b6c0857e4df710d upstream.

We need to use post-decrement to get the pci_map_page undone also for i==0, and to avoid some very unpleasant behaviour if pci_map_page failed already at i==0.

---
 drivers/gpu/drm/radeon/radeon_ttm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -758,7 +758,7 @@ static int radeon_ttm_tt_populate(struct
 						       0, PAGE_SIZE,
 						       PCI_DMA_BIDIRECTIONAL);
 		if (pci_dma_mapping_error(rdev->pdev, gtt->ttm.dma_address[i])) {
-			while (--i) {
+			while (i--) {
 				pci_unmap_page(rdev->pdev, gtt->ttm.dma_address[i],
 					       PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
 				gtt->ttm.dma_address[i] = 0;

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/drm-amdgpu-use-post-decrement-in-error-handling.patch queue-4.4/drm-radeon-use-post-decrement-in-error-handling.patch queue-4.4/drm-i915-fix-error-path-in-intel_setup_gmbus.patch