From: Ira Snyder <iws@ovro.caltech.edu>
Date: Thu, 3 Mar 2011 07:54:53 +0000 (+0000)
Subject: dmatest: fix automatic buffer unmap type
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b203bd3f6b9c3db3b1979c2ff79bb2b9be8f03a3;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

dmatest: fix automatic buffer unmap type

The dmatest code relies on the DMAEngine API to automatically call
dma_unmap_single() on src buffers. The flags it passes are incorrect,
fix them.

Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---

diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index 5589358b684d..7e1b0aa0ca50 100644
--- a/drivers/dma/dmatest.c
+++ b/drivers/dma/dmatest.c
@@ -285,7 +285,12 @@ static int dmatest_func(void *data)
 
 	set_user_nice(current, 10);
 
-	flags = DMA_CTRL_ACK | DMA_COMPL_SKIP_DEST_UNMAP | DMA_PREP_INTERRUPT;
+	/*
+	 * src buffers are freed by the DMAEngine code with dma_unmap_single()
+	 * dst buffers are freed by ourselves below
+	 */
+	flags = DMA_CTRL_ACK | DMA_PREP_INTERRUPT
+	      | DMA_COMPL_SKIP_DEST_UNMAP | DMA_COMPL_SRC_UNMAP_SINGLE;
 
 	while (!kthread_should_stop()
 	       && !(iterations && total_tests >= iterations)) {