crypto: ccp - Use only the relevant interrupt bits

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.

Cc: <stable@vger.kernel.org> # 4.9.x+

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

2 files changed, 7 insertions, 7 deletions

diff --git a/drivers/crypto/ccp/ccp-dev-v5.c b/drivers/crypto/ccp/ccp-dev-v5.c
index e03d06a54d4e..c7972e733e43 100644
--- a/drivers/crypto/ccp/ccp-dev-v5.c
+++ b/drivers/crypto/ccp/ccp-dev-v5.c
@@ -801,7 +801,7 @@ static int ccp5_init(struct ccp_device *ccp)
                 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");
@@ -882,7 +882,7 @@ static int ccp5_init(struct ccp_device *ccp)
         /* 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");
@@ -942,7 +942,7 @@ static void ccp5_destroy(struct ccp_device *ccp)
                 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);
@@ -1002,7 +1002,8 @@ static irqreturn_t ccp5_irq_handler(int irq, void *data)
                         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);
                 }
         }
diff --git a/drivers/crypto/ccp/ccp-dev.h b/drivers/crypto/ccp/ccp-dev.h
index 191274d41036..2dfec019a832 100644
--- 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