kernel: Copy patches from kernel 4.14 to 4.19

This just copies the files from the kernel 4.14 specific folders into
the kernel 4.19 specific folder, no changes are done to the files in
this commit.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

1 files changed, 172 insertions, 0 deletions

diff --git a/target/linux/generic/pending-4.19/161-mtd-part-add-generic-parsing-of-linux-part-probe.patch b/target/linux/generic/pending-4.19/161-mtd-part-add-generic-parsing-of-linux-part-probe.patch
new file mode 100644
index 0000000000..9625a51129
--- /dev/null
+++ b/target/linux/generic/pending-4.19/161-mtd-part-add-generic-parsing-of-linux-part-probe.patch
@@ -0,0 +1,172 @@
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Subject: mtd: part: add generic parsing of linux,part-probe
+
+This moves the linux,part-probe device tree parsing code from
+physmap_of.c to mtdpart.c. Now all drivers can use this feature by just
+providing a reference to their device tree node in struct
+mtd_part_parser_data.
+
+THIS METHOD HAS BEEN DEPRECATED
+
+Linux supports "compatible" property in the "partitions" subnode now. It
+should be used to specify partitions format (and trigger proper parser
+usage) if needed.
+
+Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+---
+ Documentation/devicetree/bindings/mtd/nand.txt | 16 +++++++++
+ drivers/mtd/maps/physmap_of.c                  | 46 +-------------------------
+ drivers/mtd/mtdpart.c                          | 45 +++++++++++++++++++++++++
+ 3 files changed, 62 insertions(+), 45 deletions(-)
+
+--- a/Documentation/devicetree/bindings/mtd/nand.txt
++++ b/Documentation/devicetree/bindings/mtd/nand.txt
+@@ -44,6 +44,22 @@ Optional NAND chip properties:
+ 		     used by the upper layers, and you want to make your NAND
+ 		     as reliable as possible.
+ 
++- linux,part-probe: list of name as strings of the partition parser
++		    which should be used to parse the partition table.
++		    They will be tried in the specified ordering and
++		    the next one will be used if the previous one
++		    failed.
++
++		    Example: linux,part-probe = "cmdlinepart", "ofpart";
++
++		    This is also the default value, which will be used
++		    if this attribute is not specified. It could be
++		    that the flash driver in use overwrote the default
++		    value and uses some other default.
++
++		    Possible values are: bcm47xxpart, afs, ar7part,
++		    ofoldpart, ofpart, bcm63xxpart, RedBoot, cmdlinepart
++
+ The ECC strength and ECC step size properties define the correction capability
+ of a controller. Together, they say a controller can correct "{strength} bit
+ errors per {size} bytes".
+--- a/drivers/mtd/maps/physmap_of_core.c
++++ b/drivers/mtd/maps/physmap_of_core.c
+@@ -114,37 +114,9 @@ static struct mtd_info *obsolete_probe(s
+ static const char * const part_probe_types_def[] = {
+ 	"cmdlinepart", "RedBoot", "ofpart", "ofoldpart", NULL };
+ 
+-static const char * const *of_get_probes(struct device_node *dp)
+-{
+-	const char **res;
+-	int count;
+-
+-	count = of_property_count_strings(dp, "linux,part-probe");
+-	if (count < 0)
+-		return part_probe_types_def;
+-
+-	res = kzalloc((count + 1) * sizeof(*res), GFP_KERNEL);
+-	if (!res)
+-		return NULL;
+-
+-	count = of_property_read_string_array(dp, "linux,part-probe", res,
+-					      count);
+-	if (count < 0)
+-		return NULL;
+-
+-	return res;
+-}
+-
+-static void of_free_probes(const char * const *probes)
+-{
+-	if (probes != part_probe_types_def)
+-		kfree(probes);
+-}
+-
+ static const struct of_device_id of_flash_match[];
+ static int of_flash_probe(struct platform_device *dev)
+ {
+-	const char * const *part_probe_types;
+ 	const struct of_device_id *match;
+ 	struct device_node *dp = dev->dev.of_node;
+ 	struct resource res;
+@@ -310,14 +282,8 @@ static int of_flash_probe(struct platfor
+ 
+ 	info->cmtd->dev.parent = &dev->dev;
+ 	mtd_set_of_node(info->cmtd, dp);
+-	part_probe_types = of_get_probes(dp);
+-	if (!part_probe_types) {
+-		err = -ENOMEM;
+-		goto err_out;
+-	}
+-	mtd_device_parse_register(info->cmtd, part_probe_types, NULL,
++	mtd_device_parse_register(info->cmtd, part_probe_types_def, NULL,
+ 			NULL, 0);
+-	of_free_probes(part_probe_types);
+ 
+ 	kfree(mtd_list);
+ 
+--- a/drivers/mtd/mtdpart.c
++++ b/drivers/mtd/mtdpart.c
+@@ -29,6 +29,7 @@
+ #include <linux/kmod.h>
+ #include <linux/mtd/mtd.h>
+ #include <linux/mtd/partitions.h>
++#include <linux/of.h>
+ #include <linux/err.h>
+ #include <linux/of.h>
+ 
+@@ -844,6 +845,37 @@ void deregister_mtd_parser(struct mtd_pa
+ }
+ EXPORT_SYMBOL_GPL(deregister_mtd_parser);
+ 
++#include <linux/version.h>
++
++/*
++ * Parses the linux,part-probe device tree property.
++ * When a non null value is returned it has to be freed with kfree() by
++ * the caller.
++ */
++static const char * const *of_get_probes(struct device_node *dp)
++{
++	const char **res;
++	int count;
++
++	count = of_property_count_strings(dp, "linux,part-probe");
++	if (count < 0)
++		return NULL;
++
++	res = kzalloc((count + 1) * sizeof(*res), GFP_KERNEL);
++	if (!res)
++		return NULL;
++
++	count = of_property_read_string_array(dp, "linux,part-probe", res,
++					      count);
++	if (count < 0)
++		return NULL;
++
++	pr_warn("Support for the generic \"linux,part-probe\" has been deprecated and will be removed soon");
++	BUILD_BUG_ON(LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0));
++
++	return res;
++}
++
+ /*
+  * Do not forget to update 'parse_mtd_partitions()' kerneldoc comment if you
+  * are changing this array!
+@@ -993,6 +1025,13 @@ int parse_mtd_partitions(struct mtd_info
+ 	struct mtd_partitions pparts = { };
+ 	struct mtd_part_parser *parser;
+ 	int ret, err = 0;
++	const char *const *types_of = NULL;
++
++	if (mtd_get_of_node(master)) {
++		types_of = of_get_probes(mtd_get_of_node(master));
++		if (types_of != NULL)
++			types = types_of;
++	}
+ 
+ 	if (!types)
+ 		types = mtd_is_partition(master) ? default_subpartition_types :
+@@ -1034,6 +1073,7 @@ int parse_mtd_partitions(struct mtd_info
+ 		if (ret < 0 && !err)
+ 			err = ret;
+ 	}
++	kfree(types_of);
+ 	return err;
+ }
+