[OpenWrt-Devel] [PATCH] kernel: mtd-partial_eraseblock_erase

Maciej Skrzypek maciej.skrzypek at flytronic.pl
Fri Jun 20 11:19:20 EDT 2014


mtd: allow partial block erase
This fixes error erasing partial mtd partition which does not start on
eraseblock boundary and allows using fconfig to configure redboot on
devices such as the Gateworks Cambria.

Maciej Skrzypek
Flytronic

Index:
target/linux/generic/patches-3.3/479-mtd-partial_eraseblock_erase.patch
===================================================================
---
target/linux/generic/patches-3.3/479-mtd-partial_eraseblock_erase.patch
    (revision 0)
+++

target/linux/generic/patches-3.3/479-mtd-partial_eraseblock_erase.patch
    (working copy)
@@ -0,0 +1,10 @@
+--- a/drivers/mtd/mtdpart.c
++++ b/drivers/mtd/mtdpart.c
+@@ -274,6 +274,7 @@ static int part_erase(struct mtd_info *m
+                               part->master->erasesize,
+                               &readlen, instr->erase_buf);
+
++                      instr->len += instr->erase_buf_ofs;
+                       instr->partial_start = true;
+               } else {
+                       mtd_ofs = part->offset + part->mtd.size
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