Merge tag 'for-linus-20170904' of git://git.infradead.org/linux-mtd

Pull MTD updates from Boris Brezillon:
 "General updates:
   - Constify pci_device_id in various drivers
   - Constify device_type
   - Remove pad control code from the Gemini driver
   - Use %pOF to print OF node full_name
   - Various fixes in the physmap_of driver
   - Remove unused vars in mtdswap
   - Check devm_kzalloc() return value in the spear_smi driver
   - Check clk_prepare_enable() return code in the st_spi_fsm driver
   - Create per MTD device debugfs enties

  NAND updates, from Boris Brezillon:
   - Fix memory leaks in the core
   - Remove unused NAND locking support
   - Rename nand.h into rawnand.h (preparing support for spi NANDs)
   - Use NAND_MAX_ID_LEN where appropriate
   - Fix support for 20nm Hynix chips
   - Fix support for Samsung and Hynix SLC NANDs
   - Various cleanup, improvements and fixes in the qcom driver
   - Fixes for bugs detected by various static code analysis tools
   - Fix mxc ooblayout definition
   - Add a new part_parsers to tmio and sharpsl platform data in order
     to define a custom list of partition parsers
   - Request the reset line in exclusive mode in the sunxi driver
   - Fix a build error in the orion-nand driver when compiled for ARMv4
   - Allow 64-bit mvebu platforms to select the PXA3XX driver

  SPI NOR updates, from Cyrille Pitchen and Marek Vasut:
   - add support to the JEDEC JESD216B specification (SFDP tables).
   - add support to the Intel Denverton SPI flash controller.
   - fix error recovery for Spansion/Cypress SPI NOR memories.
   - fix 4-byte address management for the Aspeed SPI controller.
   - add support to some Microchip SST26 memory parts
   - remove unneeded pinctrl header Write a message for tag:"

* tag 'for-linus-20170904' of git://git.infradead.org/linux-mtd: (74 commits)
  mtd: nand: complain loudly when chip->bits_per_cell is not correctly initialized
  mtd: nand: make Samsung SLC NAND usable again
  mtd: nand: tmio: Register partitions using the parsers
  mfd: tmio: Add partition parsers platform data
  mtd: nand: sharpsl: Register partitions using the parsers
  mtd: nand: sharpsl: Add partition parsers platform data
  mtd: nand: qcom: Support for IPQ8074 QPIC NAND controller
  mtd: nand: qcom: support for IPQ4019 QPIC NAND controller
  dt-bindings: qcom_nandc: IPQ8074 QPIC NAND documentation
  dt-bindings: qcom_nandc: IPQ4019 QPIC NAND documentation
  dt-bindings: qcom_nandc: fix the ipq806x device tree example
  mtd: nand: qcom: support for different DEV_CMD register offsets
  mtd: nand: qcom: QPIC data descriptors handling
  mtd: nand: qcom: enable BAM or ADM mode
  mtd: nand: qcom: erased codeword detection configuration
  mtd: nand: qcom: support for read location registers
  mtd: nand: qcom: support for passing flags in DMA helper functions
  mtd: nand: qcom: add BAM DMA descriptor handling
  mtd: nand: qcom: allocate BAM transaction
  mtd: nand: qcom: DMA mapping support for register read buffer
  ...

1 files changed, 4 insertions, 17 deletions

diff --git a/drivers/mtd/mtdswap.c b/drivers/mtd/mtdswap.c
index f12879a3d4ff..7d9080e33865 100644
--- a/drivers/mtd/mtdswap.c
+++ b/drivers/mtd/mtdswap.c
@@ -138,8 +138,6 @@ struct mtdswap_dev {
 
 	char *page_buf;
 	char *oob_buf;
-
-	struct dentry *debugfs_root;
 };
 
 struct mtdswap_oobdata {
@@ -1315,29 +1313,19 @@ static const struct file_operations mtdswap_fops = {
 
 static int mtdswap_add_debugfs(struct mtdswap_dev *d)
 {
-	struct gendisk *gd = d->mbd_dev->disk;
-	struct device *dev = disk_to_dev(gd);
-
-	struct dentry *root;
+	struct dentry *root = d->mtd->dbg.dfs_dir;
 	struct dentry *dent;
 
-	root = debugfs_create_dir(gd->disk_name, NULL);
-	if (IS_ERR(root))
+	if (!IS_ENABLED(CONFIG_DEBUG_FS))
 		return 0;
 
-	if (!root) {
-		dev_err(dev, "failed to initialize debugfs\n");
+	if (IS_ERR_OR_NULL(root))
 		return -1;
-	}
-
-	d->debugfs_root = root;
 
-	dent = debugfs_create_file("stats", S_IRUSR, root, d,
+	dent = debugfs_create_file("mtdswap_stats", S_IRUSR, root, d,
 				&mtdswap_fops);
 	if (!dent) {
 		dev_err(d->dev, "debugfs_create_file failed\n");
-		debugfs_remove_recursive(root);
-		d->debugfs_root = NULL;
 		return -1;
 	}
 
@@ -1540,7 +1528,6 @@ static void mtdswap_remove_dev(struct mtd_blktrans_dev *dev)
 {
 	struct mtdswap_dev *d = MTDSWAP_MBD_TO_MTDSWAP(dev);
 
-	debugfs_remove_recursive(d->debugfs_root);
 	del_mtd_blktrans_dev(dev);
 	mtdswap_cleanup(d);
 	kfree(d);