intel_th: msu: Use the real device in case of IOMMU domain allocation

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

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>

1 files changed, 6 insertions, 6 deletions

diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c
index dbbe31df74df..dfb57eaa9f22 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;