brcm63xx: backport mtd of node changes from upstream

Should fix parser data containing uninitialized values for of probed
physmap flashes, which could break e.g. the redboot parser.

Signed-off-by: Jonas Gorski <[email protected]>

target/linux/brcm63xx/patches-4.4/000-4.5-01-mtd-add-get-set-of_node-flash_node-helpers.patch

@@ -0,0 +1,78 @@
+From 28b8b26b308e656edfa9467867d5f79212da2ec3 Mon Sep 17 00:00:00 2001
+From: Brian Norris <[email protected]>
+Date: Fri, 30 Oct 2015 20:33:20 -0700
+Subject: [PATCH] mtd: add get/set of_node/flash_node helpers
+
+We are going to begin using the mtd->dev.of_node field for MTD device
+nodes, so let's add helpers for it. Also, we'll be making some
+conversions on spi_nor (and nand_chip eventually) too, so get that ready
+with their own helpers.
+
+Signed-off-by: Brian Norris <[email protected]>
+Reviewed-by: Boris Brezillon <[email protected]>
+---
+ include/linux/mtd/mtd.h     | 11 +++++++++++
+ include/linux/mtd/nand.h    | 11 +++++++++++
+ include/linux/mtd/spi-nor.h | 11 +++++++++++
+ 3 files changed, 33 insertions(+)
+
+--- a/include/linux/mtd/mtd.h
++++ b/include/linux/mtd/mtd.h
+@@ -258,6 +258,17 @@ struct mtd_info {
+ 	int usecount;
+ };
+
++static inline void mtd_set_of_node(struct mtd_info *mtd,
++				   struct device_node *np)
++{
++	mtd->dev.of_node = np;
++}
++
++static inline struct device_node *mtd_get_of_node(struct mtd_info *mtd)
++{
++	return mtd->dev.of_node;
++}
++
+ int mtd_erase(struct mtd_info *mtd, struct erase_info *instr);
+ int mtd_point(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen,
+ 	      void **virt, resource_size_t *phys);
+--- a/include/linux/mtd/nand.h
++++ b/include/linux/mtd/nand.h
+@@ -719,6 +719,17 @@ struct nand_chip {
+ 	void *priv;
+ };
+
++static inline void nand_set_flash_node(struct nand_chip *chip,
++				       struct device_node *np)
++{
++	chip->flash_node = np;
++}
++
++static inline struct device_node *nand_get_flash_node(struct nand_chip *chip)
++{
++	return chip->flash_node;
++}
++
+ /*
+  * NAND Flash Manufacturer ID Codes
+  */
+--- a/include/linux/mtd/spi-nor.h
++++ b/include/linux/mtd/spi-nor.h
+@@ -184,6 +184,17 @@ struct spi_nor {
+ 	void *priv;
+ };
+
++static inline void spi_nor_set_flash_node(struct spi_nor *nor,
++					  struct device_node *np)
++{
++	nor->flash_node = np;
++}
++
++static inline struct device_node *spi_nor_get_flash_node(struct spi_nor *nor)
++{
++	return nor->flash_node;
++}
++
+ /**
+  * spi_nor_scan() - scan the SPI NOR
+  * @nor:	the spi_nor structure

target/linux/brcm63xx/patches-4.4/000-4.5-02-mtd-ofpart-grab-device-tree-node-directly-from-maste.patch

@@ -0,0 +1,74 @@
+From 3b6521eab0386a4854d47b1a01947d7dc46ec98d Mon Sep 17 00:00:00 2001
+From: Brian Norris <[email protected]>
+Date: Fri, 30 Oct 2015 20:33:21 -0700
+Subject: [PATCH] mtd: ofpart: grab device tree node directly from master
+ device node
+
+It seems more logical to use a device node directly associated with the
+MTD master device (i.e., mtd->dev.of_node field) rather than requiring
+auxiliary partition parser information to be passed in by the driver in
+a separate struct.
+
+This patch supports the mtd->dev.of_node field and deprecates the parser
+data 'of_node' field
+
+Driver conversions may now follow.
+
+Additional side benefit to assigning mtd->dev.of_node rather than using
+parser data: the driver core will automatically create a device -> node
+symlink for us.
+
+Signed-off-by: Brian Norris <[email protected]>
+Reviewed-by: Boris Brezillon <[email protected]>
+---
+ drivers/mtd/ofpart.c           | 18 ++++++++++--------
+ include/linux/mtd/partitions.h |  4 +++-
+ 2 files changed, 13 insertions(+), 9 deletions(-)
+
+--- a/drivers/mtd/ofpart.c
++++ b/drivers/mtd/ofpart.c
+@@ -37,10 +37,11 @@ static int parse_ofpart_partitions(struc
+ 	bool dedicated = true;
+
+
+-	if (!data)
+-		return 0;
+-
+-	mtd_node = data->of_node;
++	/*
++	 * of_node can be provided through auxiliary parser data or (preferred)
++	 * by assigning the master device node
++	 */
++	mtd_node = data && data->of_node ? data->of_node : mtd_get_of_node(master);
+ 	if (!mtd_node)
+ 		return 0;
+
+@@ -157,10 +158,11 @@ static int parse_ofoldpart_partitions(st
+ 	} *part;
+ 	const char *names;
+
+-	if (!data)
+-		return 0;
+-
+-	dp = data->of_node;
++	/*
++	 * of_node can be provided through auxiliary parser data or (preferred)
++	 * by assigning the master device node
++	 */
++	dp = data && data->of_node ? data->of_node : mtd_get_of_node(master);
+ 	if (!dp)
+ 		return 0;
+
+--- a/include/linux/mtd/partitions.h
++++ b/include/linux/mtd/partitions.h
+@@ -56,7 +56,9 @@ struct device_node;
+ /**
+  * struct mtd_part_parser_data - used to pass data to MTD partition parsers.
+  * @origin: for RedBoot, start address of MTD device
+- * @of_node: for OF parsers, device node containing partitioning information
++ * @of_node: for OF parsers, device node containing partitioning information.
++ *           This field is deprecated, as the device node should simply be
++ *           assigned to the master struct device.
+  */
+ struct mtd_part_parser_data {
+ 	unsigned long origin;

target/linux/brcm63xx/patches-4.4/000-4.5-03-spi-nor-convert-to-spi_nor_-get-set-_flash_node.patch

@@ -0,0 +1,79 @@
+From 9c7d787508be6d68a6ec66de3c3466b24e820c71 Mon Sep 17 00:00:00 2001
+From: Brian Norris <[email protected]>
+Date: Fri, 30 Oct 2015 20:33:24 -0700
+Subject: [PATCH] mtd: spi-nor: convert to spi_nor_{get, set}_flash_node()
+
+Used semantic patch with 'make coccicheck MODE=patch COCCI=script.cocci':
+
+---8<----
+virtual patch
+
+@@
+struct spi_nor b;
+struct spi_nor *c;
+expression d;
+@@
+(
+-(b).flash_node = (d)
++spi_nor_set_flash_node(&b, d)
+|
+-(c)->flash_node = (d)
++spi_nor_set_flash_node(c, d)
+)
+---8<----
+
+And a manual conversion for the one use of spi_nor_get_flash_node().
+
+Signed-off-by: Brian Norris <[email protected]>
+Reviewed-by: Boris Brezillon <[email protected]>
+---
+ drivers/mtd/devices/m25p80.c      | 2 +-
+ drivers/mtd/spi-nor/fsl-quadspi.c | 2 +-
+ drivers/mtd/spi-nor/nxp-spifi.c   | 2 +-
+ drivers/mtd/spi-nor/spi-nor.c     | 2 +-
+ 4 files changed, 4 insertions(+), 4 deletions(-)
+
+--- a/drivers/mtd/devices/m25p80.c
++++ b/drivers/mtd/devices/m25p80.c
+@@ -221,7 +221,7 @@ static int m25p_probe(struct spi_device
+ 	nor->read_reg = m25p80_read_reg;
+
+ 	nor->dev = &spi->dev;
+-	nor->flash_node = spi->dev.of_node;
++	spi_nor_set_flash_node(nor, spi->dev.of_node);
+ 	nor->priv = flash;
+
+ 	spi_set_drvdata(spi, flash);
+--- a/drivers/mtd/spi-nor/fsl-quadspi.c
++++ b/drivers/mtd/spi-nor/fsl-quadspi.c
+@@ -1013,7 +1013,7 @@ static int fsl_qspi_probe(struct platfor
+ 		mtd = &nor->mtd;
+
+ 		nor->dev = dev;
+-		nor->flash_node = np;
++		spi_nor_set_flash_node(nor, np);
+ 		nor->priv = q;
+
+ 		/* fill the hooks */
+--- a/drivers/mtd/spi-nor/nxp-spifi.c
++++ b/drivers/mtd/spi-nor/nxp-spifi.c
+@@ -330,7 +330,7 @@ static int nxp_spifi_setup_flash(struct
+ 	writel(ctrl, spifi->io_base + SPIFI_CTRL);
+
+ 	spifi->nor.dev   = spifi->dev;
+-	spifi->nor.flash_node = np;
++	spi_nor_set_flash_node(&spifi->nor, np);
+ 	spifi->nor.priv  = spifi;
+ 	spifi->nor.read  = nxp_spifi_read;
+ 	spifi->nor.write = nxp_spifi_write;
+--- a/drivers/mtd/spi-nor/spi-nor.c
++++ b/drivers/mtd/spi-nor/spi-nor.c
+@@ -1109,7 +1109,7 @@ int spi_nor_scan(struct spi_nor *nor, co
+ 	const struct flash_info *info = NULL;
+ 	struct device *dev = nor->dev;
+ 	struct mtd_info *mtd = &nor->mtd;
+-	struct device_node *np = nor->flash_node;
++	struct device_node *np = spi_nor_get_flash_node(nor);
+ 	int ret;
+ 	int i;
+

target/linux/brcm63xx/patches-4.4/000-4.5-04-mtd-spi-nor-drop-unnecessary-partition-parser-data.patch

@@ -0,0 +1,83 @@
+From df02c885f8697546da41665f28dde5e30ce99674 Mon Sep 17 00:00:00 2001
+From: Brian Norris <[email protected]>
+Date: Fri, 30 Oct 2015 20:33:26 -0700
+Subject: [PATCH] mtd: spi-nor: drop unnecessary partition parser data
+
+Now that the SPI-NOR/MTD framework pass the 'flash_node' through to the
+partition parsing code, we don't have to do it ourselves.
+
+Also convert to mtd_device_register(), since we don't need the 2nd and
+3rd parameters anymore.
+
+Signed-off-by: Brian Norris <[email protected]>
+Reviewed-by: Boris Brezillon <[email protected]>
+---
+ drivers/mtd/devices/m25p80.c      | 8 ++------
+ drivers/mtd/spi-nor/fsl-quadspi.c | 4 +---
+ drivers/mtd/spi-nor/nxp-spifi.c   | 4 +---
+ 3 files changed, 4 insertions(+), 12 deletions(-)
+
+--- a/drivers/mtd/devices/m25p80.c
++++ b/drivers/mtd/devices/m25p80.c
+@@ -197,7 +197,6 @@ static int m25p80_erase(struct spi_nor *
+  */
+ static int m25p_probe(struct spi_device *spi)
+ {
+-	struct mtd_part_parser_data	ppdata;
+ 	struct flash_platform_data	*data;
+ 	struct m25p *flash;
+ 	struct spi_nor *nor;
+@@ -249,11 +248,8 @@ static int m25p_probe(struct spi_device
+ 	if (ret)
+ 		return ret;
+
+-	ppdata.of_node = spi->dev.of_node;
+-
+-	return mtd_device_parse_register(&nor->mtd, NULL, &ppdata,
+-			data ? data->parts : NULL,
+-			data ? data->nr_parts : 0);
++	return mtd_device_register(&nor->mtd, data ? data->parts : NULL,
++				   data ? data->nr_parts : 0);
+ }
+
+
+--- a/drivers/mtd/spi-nor/fsl-quadspi.c
++++ b/drivers/mtd/spi-nor/fsl-quadspi.c
+@@ -927,7 +927,6 @@ static void fsl_qspi_unprep(struct spi_n
+ static int fsl_qspi_probe(struct platform_device *pdev)
+ {
+ 	struct device_node *np = pdev->dev.of_node;
+-	struct mtd_part_parser_data ppdata;
+ 	struct device *dev = &pdev->dev;
+ 	struct fsl_qspi *q;
+ 	struct resource *res;
+@@ -1038,8 +1037,7 @@ static int fsl_qspi_probe(struct platfor
+ 		if (ret)
+ 			goto mutex_failed;
+
+-		ppdata.of_node = np;
+-		ret = mtd_device_parse_register(mtd, NULL, &ppdata, NULL, 0);
++		ret = mtd_device_register(mtd, NULL, 0);
+ 		if (ret)
+ 			goto mutex_failed;
+
+--- a/drivers/mtd/spi-nor/nxp-spifi.c
++++ b/drivers/mtd/spi-nor/nxp-spifi.c
+@@ -271,7 +271,6 @@ static void nxp_spifi_dummy_id_read(stru
+ static int nxp_spifi_setup_flash(struct nxp_spifi *spifi,
+ 				 struct device_node *np)
+ {
+-	struct mtd_part_parser_data ppdata;
+ 	enum read_mode flash_read;
+ 	u32 ctrl, property;
+ 	u16 mode = 0;
+@@ -361,8 +360,7 @@ static int nxp_spifi_setup_flash(struct
+ 		return ret;
+ 	}
+
+-	ppdata.of_node = np;
+-	ret = mtd_device_parse_register(&spifi->nor.mtd, NULL, &ppdata, NULL, 0);
++	ret = mtd_device_register(&spifi->nor.mtd, NULL, 0);
+ 	if (ret) {
+ 		dev_err(spifi->dev, "mtd device parse failed\n");
+ 		return ret;