crypto: qat - check if PF is running

Before VF sends a signal to PF it should check if PF
is still running.

Tested-by: Suman Bangalore Sathyanarayana <sumanx.bangalore.sathyanarayana@intel.com>
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/qat/qat_common/adf_common_drv.h

@@ -67,7 +67,7 @@
 #define ADF_STATUS_AE_INITIALISED 4
 #define ADF_STATUS_AE_UCODE_LOADED 5
 #define ADF_STATUS_AE_STARTED 6
-#define ADF_STATUS_ORPHAN_TH_RUNNING 7
+#define ADF_STATUS_PF_RUNNING 7
 #define ADF_STATUS_IRQ_ALLOCATED 8
 
 enum adf_dev_reset_mode {

drivers/crypto/qat/qat_common/adf_vf2pf_msg.c

@@ -66,6 +66,7 @@ int adf_vf2pf_init(struct adf_accel_dev *accel_dev)
 			"Failed to send Init event to PF\n");
 		return -EFAULT;
 	}
+	set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
 	return 0;
 }
 EXPORT_SYMBOL_GPL(adf_vf2pf_init);
@@ -83,8 +84,9 @@ void adf_vf2pf_shutdown(struct adf_accel_dev *accel_dev)
 	u32 msg = (ADF_VF2PF_MSGORIGIN_SYSTEM |
 	    (ADF_VF2PF_MSGTYPE_SHUTDOWN << ADF_VF2PF_MSGTYPE_SHIFT));
 
-	if (adf_iov_putmsg(accel_dev, msg, 0))
-		dev_err(&GET_DEV(accel_dev),
-			"Failed to send Shutdown event to PF\n");
+	if (test_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status))
+		if (adf_iov_putmsg(accel_dev, msg, 0))
+			dev_err(&GET_DEV(accel_dev),
+				"Failed to send Shutdown event to PF\n");
 }
 EXPORT_SYMBOL_GPL(adf_vf2pf_shutdown);

drivers/crypto/qat/qat_common/adf_vf_isr.c

@@ -135,6 +135,8 @@ static void adf_pf2vf_bh_handler(void *data)
 		dev_dbg(&GET_DEV(accel_dev),
 			"Restarting msg received from PF 0x%x\n", msg);
 
+		clear_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
+
 		stop_data = kzalloc(sizeof(*stop_data), GFP_ATOMIC);
 		if (!stop_data) {
 			dev_err(&GET_DEV(accel_dev),