From 96b8cea9be12e75622775b99ded5cd8cc4be6c8f Mon Sep 17 00:00:00 2001
From: Yingying Tang <yintang@codeaurora.org>
Date: Mon, 6 Mar 2017 18:14:14 +0800
Subject: [PATCH] qcacmn: Fix  "__aeabi_uldivmod" symbol error

There is an unknown symbol error "__aeabi_uldivmod" due to
a division operation between uint64 value in wlan driver.
Add qdf API to use do_div to avoid "__aeabi_uldivmod" symbol
error.

Change-Id: I24e51990ff9e0ecea327ad9c71266fd768d62a6c
CRs-Fixed: 2013952
---
 qdf/inc/qdf_util.h         | 13 +++++++++++++
 qdf/linux/src/i_qdf_util.h | 15 +++++++++++++++
 2 files changed, 28 insertions(+)

diff --git a/qdf/inc/qdf_util.h b/qdf/inc/qdf_util.h
index b5b19f22cd..c2c4823d1e 100644
--- a/qdf/inc/qdf_util.h
+++ b/qdf/inc/qdf_util.h
@@ -602,6 +602,19 @@ int qdf_set_dma_coherent_mask(struct device *dev, uint8_t addr_bits)
 	return __qdf_set_dma_coherent_mask(dev, addr_bits);
 }
 
+/**
+ * qdf_do_div() - wrapper function for kernel macro(do_div).
+ * @dividend: Dividend value
+ * @divisor : Divisor value
+ *
+ * Return: Quotient
+ */
+static inline
+uint64_t qdf_do_div(uint64_t dividend, uint32_t divisor)
+{
+	return __qdf_do_div(dividend, divisor);
+}
+
 /**
  * qdf_get_random_bytes() - returns nbytes bytes of random
  * data
diff --git a/qdf/linux/src/i_qdf_util.h b/qdf/linux/src/i_qdf_util.h
index e419dd6498..6068291823 100644
--- a/qdf/linux/src/i_qdf_util.h
+++ b/qdf/linux/src/i_qdf_util.h
@@ -422,4 +422,19 @@ void __qdf_get_random_bytes(void *buf, int nbytes)
 	return get_random_bytes(buf, nbytes);
 }
 
+/**
+ * __qdf_do_div() - wrapper function for kernel macro(do_div).
+ * @dividend: Dividend value
+ * @divisor : Divisor value
+ *
+ * Return: Quotient
+ */
+static inline
+uint64_t __qdf_do_div(uint64_t dividend, uint32_t divisor)
+{
+	do_div(dividend, divisor);
+	/*do_div macro updates dividend with Quotient of dividend/divisor */
+	return dividend;
+}
+
 #endif /*_I_QDF_UTIL_H*/