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kernel: backport mtd implementation for "compatible" in "partitions" subnode

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This backports upstream support for "compatible" DT property set for the
"partitions" subnode of flash node. It allows specifying how partitions
should be created/parsed. Right now only "fixed-partitions" is
supported.

It should eventually replace our downstream "linux,part-probe" solution.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
This commit is contained in:
Rafał Miłecki
2018-01-11 11:59:39 +01:00
parent ef27f15330
commit bde5e7a632
18 changed files with 386 additions and 56 deletions
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8
target/linux/generic/pending-4.14/411-mtd-partial_eraseblock_write.patch
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@@ -10,7 +10,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -36,6 +36,8 @@
@@ -37,6 +37,8 @@
#include "mtdcore.h"
#include "mtdsplit/mtdsplit.h"
@@ -19,7 +19,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
/* Our partition linked list */
static LIST_HEAD(mtd_partitions);
static DEFINE_MUTEX(mtd_partitions_mutex);
@@ -241,13 +243,61 @@ static int part_erase(struct mtd_info *m
@@ -242,13 +244,61 @@ static int part_erase(struct mtd_info *m
struct mtd_part *part = mtd_to_part(mtd);
int ret;
@@ -81,7 +81,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
return ret;
}
@@ -255,6 +305,25 @@ void mtd_erase_callback(struct erase_inf
@@ -256,6 +306,25 @@ void mtd_erase_callback(struct erase_inf
{
if (instr->mtd->_erase == part_erase) {
struct mtd_part *part = mtd_to_part(instr->mtd);
@@ -107,7 +107,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
instr->fail_addr -= part->offset;
@@ -598,19 +667,22 @@ static struct mtd_part *allocate_partiti
@@ -599,19 +668,22 @@ static struct mtd_part *allocate_partiti
remainder = do_div(tmp, wr_alignment);
if ((slave->mtd.flags & MTD_WRITEABLE) && remainder) {
/* Doesn't start on a boundary of major erase size */