From b7871f64ad1aa958b2a102d4429dde87a74769e2 Mon Sep 17 00:00:00 2001
From: Dustin Brown <dustinb@codeaurora.org>
Date: Tue, 15 May 2018 16:31:38 -0700
Subject: [PATCH] qcacmn: Add qdf_status_from_os_return()

It is sometimes useful to reverse map an errno into a QDF_STATUS. For
this purpose, introduce qdf_status_from_os_return(), the logical inverse
operation of qdf_status_to_os_return().

Change-Id: I053f43867ef603c2654eca64fe76c7bd313e14e4
CRs-Fixed: 2242664
---
 qdf/inc/qdf_util.h         | 11 +++++++++
 qdf/linux/src/i_qdf_util.h | 50 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 61 insertions(+)

diff --git a/qdf/inc/qdf_util.h b/qdf/inc/qdf_util.h
index a66fbb5b8377..e5700e3c9d4d 100644
--- a/qdf/inc/qdf_util.h
+++ b/qdf/inc/qdf_util.h
@@ -128,6 +128,17 @@ static inline int qdf_status_to_os_return(QDF_STATUS status)
 	return __qdf_status_to_os_return(status);
 }
 
+/**
+ * qdf_status_from_os_return() - map OS specific return code to a QDF_STATUS
+ * @rc: the input return code to map
+ *
+ * Return: QDF_STATUS
+ */
+static inline QDF_STATUS qdf_status_from_os_return(int rc)
+{
+	return __qdf_status_from_os_return(rc);
+}
+
 /**
  * qdf_set_bit() - set bit in address
  * @nr: bit number to be set
diff --git a/qdf/linux/src/i_qdf_util.h b/qdf/linux/src/i_qdf_util.h
index e0917e763467..0f92aa1fea16 100644
--- a/qdf/linux/src/i_qdf_util.h
+++ b/qdf/linux/src/i_qdf_util.h
@@ -150,6 +150,56 @@ static inline int __qdf_status_to_os_return(QDF_STATUS status)
 	}
 }
 
+static inline QDF_STATUS __qdf_status_from_os_return(int rc)
+{
+	switch (rc) {
+	case 0:
+		return QDF_STATUS_SUCCESS;
+	case -ENOMEM:
+		return QDF_STATUS_E_NOMEM;
+	case -EAGAIN:
+		return QDF_STATUS_E_AGAIN;
+	case -EINVAL:
+		return QDF_STATUS_E_INVAL;
+	case -EFAULT:
+		return QDF_STATUS_E_FAULT;
+	case -EALREADY:
+		return QDF_STATUS_E_ALREADY;
+	case -EBADMSG:
+		return QDF_STATUS_E_BADMSG;
+	case -EBUSY:
+		return QDF_STATUS_E_BUSY;
+	case -ECANCELED:
+		return QDF_STATUS_E_CANCELED;
+	case -ECONNABORTED:
+		return QDF_STATUS_E_ABORTED;
+	case -EPERM:
+		return QDF_STATUS_E_PERM;
+	case -EEXIST:
+		return QDF_STATUS_E_EXISTS;
+	case -ENOENT:
+		return QDF_STATUS_E_NOENT;
+	case -E2BIG:
+		return QDF_STATUS_E_E2BIG;
+	case -ENOSPC:
+		return QDF_STATUS_E_NOSPC;
+	case -EADDRNOTAVAIL:
+		return QDF_STATUS_E_ADDRNOTAVAIL;
+	case -ENXIO:
+		return QDF_STATUS_E_ENXIO;
+	case -ENETDOWN:
+		return QDF_STATUS_E_NETDOWN;
+	case -EIO:
+		return QDF_STATUS_E_IO;
+	case -ENETRESET:
+		return QDF_STATUS_E_NETRESET;
+	case -EINPROGRESS:
+		return QDF_STATUS_E_PENDING;
+	default:
+		return QDF_STATUS_E_PERM;
+	}
+}
+
 /**
  * __qdf_set_bit() - set bit in address
  * @nr: bit number to be set