Merge tag 'char-misc-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here is the large set of char/misc driver patches for 5.8-rc1

  Included in here are:

   - habanalabs driver updates, loads

   - mhi bus driver updates

   - extcon driver updates

   - clk driver updates (approved by the clock maintainer)

   - firmware driver updates

   - fpga driver updates

   - gnss driver updates

   - coresight driver updates

   - interconnect driver updates

   - parport driver updates (it's still alive!)

   - nvmem driver updates

   - soundwire driver updates

   - visorbus driver updates

   - w1 driver updates

   - various misc driver updates

  In short, loads of different driver subsystem updates along with the
  drivers as well.

  All have been in linux-next for a while with no reported issues"

* tag 'char-misc-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (233 commits)
  habanalabs: correctly cast u64 to void*
  habanalabs: initialize variable to default value
  extcon: arizona: Fix runtime PM imbalance on error
  extcon: max14577: Add proper dt-compatible strings
  extcon: adc-jack: Fix an error handling path in 'adc_jack_probe()'
  extcon: remove redundant assignment to variable idx
  w1: omap-hdq: print dev_err if irq flags are not cleared
  w1: omap-hdq: fix interrupt handling which did show spurious timeouts
  w1: omap-hdq: fix return value to be -1 if there is a timeout
  w1: omap-hdq: cleanup to add missing newline for some dev_dbg
  /dev/mem: Revoke mappings when a driver claims the region
  misc: xilinx-sdfec: convert get_user_pages() --> pin_user_pages()
  misc: xilinx-sdfec: cleanup return value in xsdfec_table_write()
  misc: xilinx-sdfec: improve get_user_pages_fast() error handling
  nvmem: qfprom: remove incorrect write support
  habanalabs: handle MMU cache invalidation timeout
  habanalabs: don't allow hard reset with open processes
  habanalabs: GAUDI does not support soft-reset
  habanalabs: add print for soft reset due to event
  habanalabs: improve MMU cache invalidation code
  ...

1 files changed, 9 insertions, 33 deletions

diff --git a/drivers/misc/genwqe/card_utils.c b/drivers/misc/genwqe/card_utils.c
index 2e1c4d2905e8..60460a053b2d 100644
--- a/drivers/misc/genwqe/card_utils.c
+++ b/drivers/misc/genwqe/card_utils.c
@@ -515,30 +515,6 @@ int genwqe_free_sync_sgl(struct genwqe_dev *cd, struct genwqe_sgl *sgl)
 }
 
 /**
- * genwqe_free_user_pages() - Give pinned pages back
- *
- * Documentation of get_user_pages is in mm/gup.c:
- *
- * If the page is written to, set_page_dirty (or set_page_dirty_lock,
- * as appropriate) must be called after the page is finished with, and
- * before put_page is called.
- */
-static int genwqe_free_user_pages(struct page **page_list,
-			unsigned int nr_pages, int dirty)
-{
-	unsigned int i;
-
-	for (i = 0; i < nr_pages; i++) {
-		if (page_list[i] != NULL) {
-			if (dirty)
-				set_page_dirty_lock(page_list[i]);
-			put_page(page_list[i]);
-		}
-	}
-	return 0;
-}
-
-/**
  * genwqe_user_vmap() - Map user-space memory to virtual kernel memory
  * @cd:         pointer to genwqe device
  * @m:          mapping params
@@ -597,18 +573,18 @@ int genwqe_user_vmap(struct genwqe_dev *cd, struct dma_mapping *m, void *uaddr,
 	m->dma_list = (dma_addr_t *)(m->page_list + m->nr_pages);
 
 	/* pin user pages in memory */
-	rc = get_user_pages_fast(data & PAGE_MASK, /* page aligned addr */
+	rc = pin_user_pages_fast(data & PAGE_MASK, /* page aligned addr */
 				 m->nr_pages,
 				 m->write ? FOLL_WRITE : 0,	/* readable/writable */
 				 m->page_list);	/* ptrs to pages */
 	if (rc < 0)
-		goto fail_get_user_pages;
+		goto fail_pin_user_pages;
 
-	/* assumption: get_user_pages can be killed by signals. */
+	/* assumption: pin_user_pages can be killed by signals. */
 	if (rc < m->nr_pages) {
-		genwqe_free_user_pages(m->page_list, rc, m->write);
+		unpin_user_pages_dirty_lock(m->page_list, rc, m->write);
 		rc = -EFAULT;
-		goto fail_get_user_pages;
+		goto fail_pin_user_pages;
 	}
 
 	rc = genwqe_map_pages(cd, m->page_list, m->nr_pages, m->dma_list);
@@ -618,9 +594,9 @@ int genwqe_user_vmap(struct genwqe_dev *cd, struct dma_mapping *m, void *uaddr,
 	return 0;
 
  fail_free_user_pages:
-	genwqe_free_user_pages(m->page_list, m->nr_pages, m->write);
+	unpin_user_pages_dirty_lock(m->page_list, m->nr_pages, m->write);
 
- fail_get_user_pages:
+ fail_pin_user_pages:
 	kfree(m->page_list);
 	m->page_list = NULL;
 	m->dma_list = NULL;
@@ -650,8 +626,8 @@ int genwqe_user_vunmap(struct genwqe_dev *cd, struct dma_mapping *m)
 		genwqe_unmap_pages(cd, m->dma_list, m->nr_pages);
 
 	if (m->page_list) {
-		genwqe_free_user_pages(m->page_list, m->nr_pages, m->write);
-
+		unpin_user_pages_dirty_lock(m->page_list, m->nr_pages,
+					    m->write);
 		kfree(m->page_list);
 		m->page_list = NULL;
 		m->dma_list = NULL;