From: leonidk <leonidk@ad392aa1-c5ef-ae45-8dd8-e69d62a5ef86>
Date: Mon, 10 Apr 2006 17:52:50 +0000 (+0000)
Subject: [MTHCA] fixed a bug in release resources
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=d23a856cf8b4ea5c37511c03f85f41045e9a85cd;p=~shefty%2Frdma-win.git

[MTHCA] fixed a bug in release resources

git-svn-id: svn://openib.tc.cornell.edu/gen1@305 ad392aa1-c5ef-ae45-8dd8-e69d62a5ef86
---

diff --git a/trunk/hw/mthca/kernel/mthca_memfree.c b/trunk/hw/mthca/kernel/mthca_memfree.c
index ad469f0b..6949da6f 100644
--- a/trunk/hw/mthca/kernel/mthca_memfree.c
+++ b/trunk/hw/mthca/kernel/mthca_memfree.c
@@ -456,6 +456,8 @@ out:
 void mthca_unmap_user_db(struct mthca_dev *dev, struct mthca_uar *uar,
 			 struct mthca_user_db_table *db_tab, int index)
 {
+	u8 status;
+	int ix = index / MTHCA_DB_REC_PER_PAGE;
 	UNREFERENCED_PARAMETER(uar);
 	
 	if (!mthca_is_memfree(dev))
@@ -468,7 +470,12 @@ void mthca_unmap_user_db(struct mthca_dev *dev, struct mthca_uar *uar,
 
 	down(&db_tab->mutex);
 
-	--db_tab->page[index / MTHCA_DB_REC_PER_PAGE].refcount;
+	if (!--db_tab->page[ix].refcount) {
+		mthca_UNMAP_ICM(dev, mthca_uarc_virt(dev, uar, ix), 1, &status);
+		pci_unmap_sg(dev, &db_tab->page[ix].mem, 1, PCI_DMA_TODEVICE);
+		put_page(&db_tab->page[ix].mem);
+		db_tab->page[ix].uvirt = 0;
+	}
 
 	up(&db_tab->mutex);
 }