[GIT PULL 08/15] intel_th: msu: Use the real device in case of IOMMU domain allocation

From: Alexander Shishkin
Date: Fri Aug 25 2017 - 12:35:26 EST


When allocating DMA buffers for the MSU, use the real device instead
of GTH.

Signed-off-by: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
---
drivers/hwtracing/intel_th/msu.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c
index dbbe31df74..dfb57eaa9f 100644
--- a/drivers/hwtracing/intel_th/msu.c
+++ b/drivers/hwtracing/intel_th/msu.c
@@ -709,17 +709,17 @@ static int msc_buffer_win_alloc(struct msc *msc, unsigned int nr_blocks)
}

for (i = 0; i < nr_blocks; i++) {
- win->block[i].bdesc = dma_alloc_coherent(msc_dev(msc), size,
- &win->block[i].addr,
- GFP_KERNEL);
+ win->block[i].bdesc =
+ dma_alloc_coherent(msc_dev(msc)->parent->parent, size,
+ &win->block[i].addr, GFP_KERNEL);
+
+ if (!win->block[i].bdesc)
+ goto err_nomem;

#ifdef CONFIG_X86
/* Set the page as uncached */
set_memory_uc((unsigned long)win->block[i].bdesc, 1);
#endif
-
- if (!win->block[i].bdesc)
- goto err_nomem;
}

win->msc = msc;
--
2.14.1