From 6f2ba170ae3fdacdde568cc7b2be3d33a848c1d7 Mon Sep 17 00:00:00 2001
From: Aman Priyadarshi <aman.eureka@gmail.com>
Date: Tue, 26 Jul 2016 15:38:14 +0000
Subject: [PATCH] Fixed write crashes, write support working. Tested on win2k3
 sp2 vmware sata

svn path=/branches/GSoC_2016/AHCI/; revision=72005
---
 drivers/storage/storahci/storahci.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/storage/storahci/storahci.c b/drivers/storage/storahci/storahci.c
index af75b87a89a..1f76d433be4 100644
--- a/drivers/storage/storahci/storahci.c
+++ b/drivers/storage/storahci/storahci.c
@@ -1800,7 +1800,6 @@ UCHAR DeviceRequestReadWrite (
     {
         SrbExtension->Flags |= ATA_FLAGS_DATA_OUT;
         SrbExtension->CommandReg = IDE_COMMAND_WRITE_DMA;
-        //NT_ASSERT(FALSE);
     }
 
     SrbExtension->FeaturesLow = 0;
@@ -1813,7 +1812,15 @@ UCHAR DeviceRequestReadWrite (
     if (PortExtension->DeviceParams.Lba48BitMode)
     {
         SrbExtension->Flags |= ATA_FLAGS_48BIT_COMMAND;
-        SrbExtension->CommandReg = IDE_COMMAND_READ_DMA_EXT;
+
+        if (IsReading)
+        {
+            SrbExtension->CommandReg = IDE_COMMAND_READ_DMA_EXT;
+        }
+        else
+        {
+            SrbExtension->CommandReg = IDE_COMMAND_WRITE_DMA_EXT;
+        }
 
         SrbExtension->LBA3 = (StartOffset >> 24) & 0xFF;
         SrbExtension->LBA4 = (StartOffset >> 32) & 0xFF;