Merge tag 'for-linus-20171120' of git://git.infradead.org/linux-mtd

Pull MTD updates from Richard Weinberger:
 "General changes:
   -  Unconfuse get_unmapped_area and point/unpoint driver methods
   -  New partition parser: sharpslpart
   -  Kill GENERIC_IO
   -  Various fixes

  NAND changes:
   -  Add a flag to mark NANDs that require 3 address cycles to encode a
      page address
   -  Set a default ECC/free layout when NAND_ECC_NONE is requested
   -  Fix a bug in panic_nand_write()
   -  Another batch of cleanups for the denali driver
   -  Fix PM support in the atmel driver
   -  Remove support for platform data in the omap driver
   -  Fix subpage write in the omap driver
   -  Fix irq handling in the mtk driver
   -  Change link order of mtk_ecc and mtk_nand drivers to speed up boot
      time
   -  Change log level of ECC error messages in the mxc driver
   -  Patch the pxa3xx driver to support Armada 8k platforms
   -  Add BAM DMA support to the qcom driver
   -  Convert gpio-nand to the GPIO desc API
   -  Fix ECC handling in the mt29f driver

  SPI-NOR changes:
   -  Introduce system power management support
   -  New mechanism to select the proper .quad_enable() hook by JEDEC
      ID, when needed, instead of only by manufacturer ID
   -  Add support to new memory parts from Gigadevice, Winbond, Macronix
      and Everspin
   -  Maintainance for Cadence, Intel, Mediatek and STM32 drivers"

*  tag 'for-linus-20171120' of git://git.infradead.org/linux-mtd: (85 commits)
  mtd: Avoid probe failures when mtd->dbg.dfs_dir is invalid
  mtd: sharpslpart: Add sharpslpart partition parser
  mtd: Add sanity checks in mtd_write/read_oob()
  mtd: remove the get_unmapped_area method
  mtd: implement mtd_get_unmapped_area() using the point method
  mtd: chips/map_rom.c: implement point and unpoint methods
  mtd: chips/map_ram.c: implement point and unpoint methods
  mtd: mtdram: properly handle the phys argument in the point method
  mtd: mtdswap: fix spelling mistake: 'TRESHOLD' -> 'THRESHOLD'
  mtd: slram: use memremap() instead of ioremap()
  kconfig: kill off GENERIC_IO option
  mtd: Fix C++ comment in include/linux/mtd/mtd.h
  mtd: constify mtd_partition
  mtd: plat-ram: Replace manual resource management by devm
  mtd: nand: Fix writing mtdoops to nand flash.
  mtd: intel-spi: Add Intel Lewisburg PCH SPI super SKU PCI ID
  mtd: nand: mtk: fix infinite ECC decode IRQ issue
  mtd: spi-nor: Add support for mr25h128
  mtd: nand: mtk: change the compile sequence of mtk_nand.o and mtk_ecc.o
  mtd: spi-nor: enable 4B opcodes for mx66l51235l
  ...

8 files changed, 11 insertions, 41 deletions

diff --git a/drivers/mtd/maps/cfi_flagadm.c b/drivers/mtd/maps/cfi_flagadm.c
index d504b3d1791d..70f488628464 100644
--- a/drivers/mtd/maps/cfi_flagadm.c
+++ b/drivers/mtd/maps/cfi_flagadm.c
@@ -61,7 +61,7 @@ static struct map_info flagadm_map = {
 		.bankwidth =	2,
 };
 
-static struct mtd_partition flagadm_parts[] = {
+static const struct mtd_partition flagadm_parts[] = {
 	{
 		.name =		"Bootloader",
 		.offset	=	FLASH_PARTITION0_ADDR,
diff --git a/drivers/mtd/maps/impa7.c b/drivers/mtd/maps/impa7.c
index 15bbda03be65..a0b8fa7849a9 100644
--- a/drivers/mtd/maps/impa7.c
+++ b/drivers/mtd/maps/impa7.c
@@ -47,7 +47,7 @@ static struct map_info impa7_map[NUM_FLASHBANKS] = {
 /*
  * MTD partitioning stuff
  */
-static struct mtd_partition partitions[] =
+static const struct mtd_partition partitions[] =
 {
 	{
 		.name = "FileSystem",
diff --git a/drivers/mtd/maps/netsc520.c b/drivers/mtd/maps/netsc520.c
index 81dc2598bc0a..3528497f96c7 100644
--- a/drivers/mtd/maps/netsc520.c
+++ b/drivers/mtd/maps/netsc520.c
@@ -52,7 +52,7 @@
 /* partition_info gives details on the logical partitions that the split the
  * single flash device into. If the size if zero we use up to the end of the
  * device. */
-static struct mtd_partition partition_info[]={
+static const struct mtd_partition partition_info[] = {
     {
 	    .name = "NetSc520 boot kernel",
 	    .offset = 0,
diff --git a/drivers/mtd/maps/nettel.c b/drivers/mtd/maps/nettel.c
index a577ef8553d0..729579fb654f 100644
--- a/drivers/mtd/maps/nettel.c
+++ b/drivers/mtd/maps/nettel.c
@@ -107,7 +107,7 @@ static struct map_info nettel_amd_map = {
 	.bankwidth = AMD_BUSWIDTH,
 };
 
-static struct mtd_partition nettel_amd_partitions[] = {
+static const struct mtd_partition nettel_amd_partitions[] = {
 	{
 		.name = "SnapGear BIOS config",
 		.offset = 0x000e0000,
diff --git a/drivers/mtd/maps/plat-ram.c b/drivers/mtd/maps/plat-ram.c
index 51572895c02c..6d9a4d6f9839 100644
--- a/drivers/mtd/maps/plat-ram.c
+++ b/drivers/mtd/maps/plat-ram.c
@@ -43,7 +43,6 @@ struct platram_info {
 	struct device		*dev;
 	struct mtd_info		*mtd;
 	struct map_info		 map;
-	struct resource		*area;
 	struct platdata_mtd_ram	*pdata;
 };
 
@@ -97,16 +96,6 @@ static int platram_remove(struct platform_device *pdev)
 
 	platram_setrw(info, PLATRAM_RO);
 
-	/* release resources */
-
-	if (info->area) {
-		release_resource(info->area);
-		kfree(info->area);
-	}
-
-	if (info->map.virt != NULL)
-		iounmap(info->map.virt);
-
 	kfree(info);
 
 	return 0;
@@ -147,12 +136,11 @@ static int platram_probe(struct platform_device *pdev)
 	info->pdata = pdata;
 
 	/* get the resource for the memory mapping */
-
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-
-	if (res == NULL) {
-		dev_err(&pdev->dev, "no memory resource specified\n");
-		err = -ENOENT;
+	info->map.virt = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(info->map.virt)) {
+		err = PTR_ERR(info->map.virt);
+		dev_err(&pdev->dev, "failed to ioremap() region\n");
 		goto exit_free;
 	}
 
@@ -167,26 +155,8 @@ static int platram_probe(struct platform_device *pdev)
 			(char *)pdata->mapname : (char *)pdev->name;
 	info->map.bankwidth = pdata->bankwidth;
 
-	/* register our usage of the memory area */
-
-	info->area = request_mem_region(res->start, info->map.size, pdev->name);
-	if (info->area == NULL) {
-		dev_err(&pdev->dev, "failed to request memory region\n");
-		err = -EIO;
-		goto exit_free;
-	}
-
-	/* remap the memory area */
-
-	info->map.virt = ioremap(res->start, info->map.size);
 	dev_dbg(&pdev->dev, "virt %p, %lu bytes\n", info->map.virt, info->map.size);
 
-	if (info->map.virt == NULL) {
-		dev_err(&pdev->dev, "failed to ioremap() region\n");
-		err = -EIO;
-		goto exit_free;
-	}
-
 	simple_map_init(&info->map);
 
 	dev_dbg(&pdev->dev, "initialised map, probing for mtd\n");
diff --git a/drivers/mtd/maps/sbc_gxx.c b/drivers/mtd/maps/sbc_gxx.c
index 556a2dfe94c5..4337d279ad83 100644
--- a/drivers/mtd/maps/sbc_gxx.c
+++ b/drivers/mtd/maps/sbc_gxx.c
@@ -87,7 +87,7 @@ static DEFINE_SPINLOCK(sbc_gxx_spin);
 /* partition_info gives details on the logical partitions that the split the
  * single flash device into. If the size if zero we use up to the end of the
  * device. */
-static struct mtd_partition partition_info[]={
+static const struct mtd_partition partition_info[] = {
     { .name = "SBC-GXx flash boot partition",
       .offset = 0,
       .size =   BOOT_PARTITION_SIZE_KiB*1024 },
diff --git a/drivers/mtd/maps/ts5500_flash.c b/drivers/mtd/maps/ts5500_flash.c
index 9969fedb1f13..8f177e0acb8c 100644
--- a/drivers/mtd/maps/ts5500_flash.c
+++ b/drivers/mtd/maps/ts5500_flash.c
@@ -43,7 +43,7 @@ static struct map_info ts5500_map = {
 	.phys = WINDOW_ADDR
 };
 
-static struct mtd_partition ts5500_partitions[] = {
+static const struct mtd_partition ts5500_partitions[] = {
 	{
 		.name = "Drive A",
 		.offset = 0,
diff --git a/drivers/mtd/maps/uclinux.c b/drivers/mtd/maps/uclinux.c
index 00a8190797ec..aef030ca8601 100644
--- a/drivers/mtd/maps/uclinux.c
+++ b/drivers/mtd/maps/uclinux.c
@@ -49,7 +49,7 @@ static struct mtd_info *uclinux_ram_mtdinfo;
 
 /****************************************************************************/
 
-static struct mtd_partition uclinux_romfs[] = {
+static const struct mtd_partition uclinux_romfs[] = {
 	{ .name = "ROMfs" }
 };