Patch "crypto: ccp - Use only the relevant interrupt bits" has been added to the 4.9-stable tree

[<gregkh@linuxfoundation.org>]

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

    crypto: ccp - Use only the relevant interrupt bits

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-use-only-the-relevant-interrupt-bits.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 <stable@vger.kernel.org> know about it.


>From 56467cb11cf8ae4db9003f54b3d3425b5f07a10a Mon Sep 17 00:00:00 2001
From: Gary R Hook <gary.hook@amd.com>
Date: Thu, 20 Apr 2017 15:24:09 -0500
Subject: crypto: ccp - Use only the relevant interrupt bits

From: Gary R Hook <gary.hook@amd.com>

commit 56467cb11cf8ae4db9003f54b3d3425b5f07a10a upstream.

Each CCP queue can product interrupts for 4 conditions:
operation complete, queue empty, error, and queue stopped.
This driver only works with completion and error events.

Signed-off-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/crypto/ccp/ccp-dev-v5.c |    9 +++++----
 drivers/crypto/ccp/ccp-dev.h    |    5 ++---
 2 files changed, 7 insertions(+), 7 deletions(-)

--- a/drivers/crypto/ccp/ccp-dev-v5.c
+++ b/drivers/crypto/ccp/ccp-dev-v5.c
@@ -740,7 +740,7 @@ static int ccp5_init(struct ccp_device *
 		ioread32(cmd_q->reg_status);
 
 		/* Clear the interrupts */
-		iowrite32(ALL_INTERRUPTS, cmd_q->reg_interrupt_status);
+		iowrite32(SUPPORTED_INTERRUPTS, cmd_q->reg_interrupt_status);
 	}
 
 	dev_dbg(dev, "Requesting an IRQ...\n");
@@ -824,7 +824,7 @@ static int ccp5_init(struct ccp_device *
 	/* Enable interrupts */
 	for (i = 0; i < ccp->cmd_q_count; i++) {
 		cmd_q = &ccp->cmd_q[i];
-		iowrite32(ALL_INTERRUPTS, cmd_q->reg_int_enable);
+		iowrite32(SUPPORTED_INTERRUPTS, cmd_q->reg_int_enable);
 	}
 
 	dev_dbg(dev, "Registering device...\n");
@@ -884,7 +884,7 @@ static void ccp5_destroy(struct ccp_devi
 		iowrite32(cmd_q->qcontrol & ~CMD5_Q_RUN, cmd_q->reg_control);
 
 		/* Disable the interrupts */
-		iowrite32(ALL_INTERRUPTS, cmd_q->reg_interrupt_status);
+		iowrite32(SUPPORTED_INTERRUPTS, cmd_q->reg_interrupt_status);
 
 		/* Clear the interrupt status */
 		iowrite32(0x00, cmd_q->reg_int_enable);
@@ -944,7 +944,8 @@ static irqreturn_t ccp5_irq_handler(int
 			cmd_q->int_rcvd = 1;
 
 			/* Acknowledge the interrupt and wake the kthread */
-			iowrite32(ALL_INTERRUPTS, cmd_q->reg_interrupt_status);
+			iowrite32(SUPPORTED_INTERRUPTS,
+				  cmd_q->reg_interrupt_status);
 			wake_up_interruptible(&cmd_q->int_queue);
 		}
 	}
--- a/drivers/crypto/ccp/ccp-dev.h
+++ b/drivers/crypto/ccp/ccp-dev.h
@@ -109,9 +109,8 @@
 #define INT_COMPLETION			0x1
 #define INT_ERROR			0x2
 #define INT_QUEUE_STOPPED		0x4
-#define ALL_INTERRUPTS			(INT_COMPLETION| \
-					 INT_ERROR| \
-					 INT_QUEUE_STOPPED)
+#define	INT_EMPTY_QUEUE			0x8
+#define SUPPORTED_INTERRUPTS		(INT_COMPLETION | INT_ERROR)
 
 #define LSB_REGION_WIDTH		5
 #define MAX_LSB_CNT			8


Patches currently in stable-queue which might be from gary.hook@amd.com are

queue-4.9/crypto-ccp-use-only-the-relevant-interrupt-bits.patch
queue-4.9/crypto-ccp-change-isr-handler-method-for-a-v3-ccp.patch
queue-4.9/crypto-ccp-change-isr-handler-method-for-a-v5-ccp.patch