Patch "crypto: ccp - Fix DMA operations when IOMMU is enabled" has been added to the 4.9-stable tree

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

crypto: ccp - Fix DMA operations when IOMMU is enabled

to the 4.9-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:
crypto-ccp-fix-dma-operations-when-iommu-is-enabled.patch
and it can be found in the queue-4.9 subdirectory.

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

From: Gary R Hook <[email protected]>
Date: Fri, 27 Jan 2017 15:28:45 -0600
Subject: crypto: ccp - Fix DMA operations when IOMMU is enabled

From: Gary R Hook <[email protected]>

commit 500c0106e638e08c2c661c305ed57d6b67e10908 upstream.

An I/O page fault occurs when the IOMMU is enabled on a system that supports the v5 CCP. DMA operations use a Request ID value that does not match what is expected by the IOMMU, resulting in the I/O page fault. Setting the Request ID value to 0 corrects this issue.

---
 drivers/crypto/ccp/ccp-dev-v5.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -955,7 +955,7 @@ static irqreturn_t ccp5_irq_handler(int
 static void ccp5_config(struct ccp_device *ccp)
 {
 	/* Public side */
-	iowrite32(0x00001249, ccp->io_regs + CMD5_REQID_CONFIG_OFFSET);
+	iowrite32(0x0, ccp->io_regs + CMD5_REQID_CONFIG_OFFSET);
 }
 
 static void ccp5other_config(struct ccp_device *ccp)

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

queue-4.9/crypto-ccp-fix-double-add-when-creating-new-dma-command.patch queue-4.9/crypto-ccp-fix-dma-operations-when-iommu-is-enabled.patch