Merge tag 'char-misc-4.17-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are four small bugfixes for some char/misc drivers. Well, really
  three fixes and one fix for one of those fixes due to problems found
  by 0-day.

  This resolves some reported issues with the hwtracing drivers, and a
  reported regression for the thunderbolt subsystem. All of these have
  been in linux-next for a while now with no reported problems"

* tag 'char-misc-4.17-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  hwtracing: stm: fix build error on some arches
  intel_th: Use correct device when freeing buffers
  stm class: Use vmalloc for the master map
  thunderbolt: Handle NULL boot ACL entries properly

drivers/hwtracing/intel_th/msu.c

@@ -733,8 +733,8 @@ static int msc_buffer_win_alloc(struct msc *msc, unsigned int nr_blocks)
 		/* Reset the page to write-back before releasing */
 		set_memory_wb((unsigned long)win->block[i].bdesc, 1);
 #endif
-		dma_free_coherent(msc_dev(msc), size, win->block[i].bdesc,
-				  win->block[i].addr);
+		dma_free_coherent(msc_dev(msc)->parent->parent, size,
+				  win->block[i].bdesc, win->block[i].addr);
 	}
 	kfree(win);
 
@@ -769,7 +769,7 @@ static void msc_buffer_win_free(struct msc *msc, struct msc_window *win)
 		/* Reset the page to write-back before releasing */
 		set_memory_wb((unsigned long)win->block[i].bdesc, 1);
 #endif
-		dma_free_coherent(msc_dev(win->msc), PAGE_SIZE,
+		dma_free_coherent(msc_dev(win->msc)->parent->parent, PAGE_SIZE,
 				  win->block[i].bdesc, win->block[i].addr);
 	}
 

drivers/hwtracing/stm/core.c

@@ -19,6 +19,7 @@
 #include <linux/stm.h>
 #include <linux/fs.h>
 #include <linux/mm.h>
+#include <linux/vmalloc.h>
 #include "stm.h"
 
 #include <uapi/linux/stm.h>
@@ -674,7 +675,7 @@ static void stm_device_release(struct device *dev)
 {
 	struct stm_device *stm = to_stm_device(dev);
 
-	kfree(stm);
+	vfree(stm);
 }
 
 int stm_register_device(struct device *parent, struct stm_data *stm_data,
@@ -691,7 +692,7 @@ int stm_register_device(struct device *parent, struct stm_data *stm_data,
 		return -EINVAL;
 
 	nmasters = stm_data->sw_end - stm_data->sw_start + 1;
-	stm = kzalloc(sizeof(*stm) + nmasters * sizeof(void *), GFP_KERNEL);
+	stm = vzalloc(sizeof(*stm) + nmasters * sizeof(void *));
 	if (!stm)
 		return -ENOMEM;
 
@@ -744,7 +745,7 @@ int stm_register_device(struct device *parent, struct stm_data *stm_data,
 	/* matches device_initialize() above */
 	put_device(&stm->dev);
 err_free:
-	kfree(stm);
+	vfree(stm);
 
 	return err;
 }

drivers/thunderbolt/icm.c

@@ -1255,7 +1255,7 @@ static int icm_ar_get_boot_acl(struct tb *tb, uuid_t *uuids, size_t nuuids)
 			/* Map empty entries to null UUID */
 			uuid[0] = 0;
 			uuid[1] = 0;
-		} else {
+		} else if (uuid[0] != 0 || uuid[1] != 0) {
 			/* Upper two DWs are always one's */
 			uuid[2] = 0xffffffff;
 			uuid[3] = 0xffffffff;