crypto: qat - move PFVF compat checker to a function

Move the code that implements VF version compatibility on the PF side to
a separate function so that it can be reused when doing VM live
migration.

This does not introduce any functional change.
Signed-off-by: Xin Zeng <xin.zeng@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/intel/qat/qat_common/adf_pfvf_pf_proto.c

@@ -242,13 +242,7 @@ static int adf_handle_vf2pf_msg(struct adf_accel_dev *accel_dev, u8 vf_nr,
 			"VersionRequest received from VF%d (vers %d) to PF (vers %d)\n",
 			vf_nr, vf_compat_ver, ADF_PFVF_COMPAT_THIS_VERSION);
 
-		if (vf_compat_ver == 0)
-			compat = ADF_PF2VF_VF_INCOMPATIBLE;
-		else if (vf_compat_ver <= ADF_PFVF_COMPAT_THIS_VERSION)
-			compat = ADF_PF2VF_VF_COMPATIBLE;
-		else
-			compat = ADF_PF2VF_VF_COMPAT_UNKNOWN;
-
+		compat = adf_vf_compat_checker(vf_compat_ver);
 		vf_info->vf_compat_ver = vf_compat_ver;
 
 		resp->type = ADF_PF2VF_MSGTYPE_VERSION_RESP;

drivers/crypto/intel/qat/qat_common/adf_pfvf_utils.h

@@ -28,4 +28,15 @@ u32 adf_pfvf_csr_msg_of(struct adf_accel_dev *accel_dev, struct pfvf_message msg
 struct pfvf_message adf_pfvf_message_of(struct adf_accel_dev *accel_dev, u32 raw_msg,
 					const struct pfvf_csr_format *fmt);
 
+static inline u8 adf_vf_compat_checker(u8 vf_compat_ver)
+{
+	if (vf_compat_ver == 0)
+		return ADF_PF2VF_VF_INCOMPATIBLE;
+
+	if (vf_compat_ver <= ADF_PFVF_COMPAT_THIS_VERSION)
+		return ADF_PF2VF_VF_COMPATIBLE;
+
+	return ADF_PF2VF_VF_COMPAT_UNKNOWN;
+}
+
 #endif /* ADF_PFVF_UTILS_H */