From: Nick Ewalt <nicholasewalt@google.com>
Date: Mon, 17 Sep 2018 12:39:02 +0000 (-0700)
Subject: staging: gasket: fix gasket_free_coherent_memory metadata frees
X-Git-Tag: v4.20-rc1~72^2~367
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=c3873a5c741f75847ae50a3f566fea2c171c1054;p=linux.git

staging: gasket: fix gasket_free_coherent_memory metadata frees

Free gasket_coherent_page_entries metadata memory, update data
structures accordingly.

Signed-off-by: Nick Ewalt <nicholasewalt@google.com>
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/gasket/gasket_page_table.c b/drivers/staging/gasket/gasket_page_table.c
index 33d98043953a..c1ce8f984f8e 100644
--- a/drivers/staging/gasket/gasket_page_table.c
+++ b/drivers/staging/gasket/gasket_page_table.c
@@ -1353,6 +1353,11 @@ int gasket_free_coherent_memory(struct gasket_dev *gasket_dev, u64 size,
 		gasket_dev->coherent_buffer.virt_base = NULL;
 		gasket_dev->coherent_buffer.phys_base = 0;
 	}
+
+	kfree(gasket_dev->page_table[index]->coherent_pages);
+	gasket_dev->page_table[index]->coherent_pages = NULL;
+	gasket_dev->page_table[index]->num_coherent_pages = 0;
+
 	return 0;
 }