kernel: copy kernel 4.19 code to 5.4

No changes were done to the patches while coping them. Currently they do
not apply on top of kernel 5.4.

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

1 files changed, 41 insertions, 0 deletions

diff --git a/target/linux/generic/pending-5.4/420-mtd-redboot_space.patch b/target/linux/generic/pending-5.4/420-mtd-redboot_space.patch
new file mode 100644
index 0000000000..85fbe0512d
--- /dev/null
+++ b/target/linux/generic/pending-5.4/420-mtd-redboot_space.patch
@@ -0,0 +1,41 @@
+From: Felix Fietkau <nbd@nbd.name>
+Subject: add patch for including unpartitioned space in the rootfs partition for redboot devices (if applicable)
+
+[john@phrozen.org: used by ixp and others]
+
+lede-commit: 394918851f84e4d00fa16eb900e7700e95091f00
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+ drivers/mtd/redboot.c | 19 +++++++++++++------
+ 1 file changed, 13 insertions(+), 6 deletions(-)
+
+--- a/drivers/mtd/redboot.c
++++ b/drivers/mtd/redboot.c
+@@ -265,14 +265,21 @@ static int parse_redboot_partitions(stru
+ #endif
+ 		names += strlen(names)+1;
+ 
+-#ifdef CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED
+ 		if(fl->next && fl->img->flash_base + fl->img->size + master->erasesize <= fl->next->img->flash_base) {
+-			i++;
+-			parts[i].offset = parts[i-1].size + parts[i-1].offset;
+-			parts[i].size = fl->next->img->flash_base - parts[i].offset;
+-			parts[i].name = nullname;
+-		}
++			if (!strcmp(parts[i].name, "rootfs")) {
++				parts[i].size = fl->next->img->flash_base;
++				parts[i].size &= ~(master->erasesize - 1);
++				parts[i].size -= parts[i].offset;
++#ifdef CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED
++				nrparts--;
++			} else {
++				i++;
++				parts[i].offset = parts[i-1].size + parts[i-1].offset;
++				parts[i].size = fl->next->img->flash_base - parts[i].offset;
++				parts[i].name = nullname;
+ #endif
++			}
++		}
+ 		tmp_fl = fl;
+ 		fl = fl->next;
+ 		kfree(tmp_fl);