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dfu: dfu_mtd: set max_buf_size to erasesize also for NOR devices

For NOR devices the logical DFU buffer size is the sector_size,
as it is done in dfu_sf.c or in spi/sf_mtd.c
(sf_mtd_info.erasesize = flash->sector_size)

For NAND the DFU size was already limited to erasesize as
has_pages = true.

So the mtd dfu backend can use this erasesize for all the MTD devices,
NOR and NAND with dfu->max_buf_size = mtd->erasesize

This difference was initially copied from MTD command, where
data is fully available in RAM without size limitation.

This patch avoids to have many sector write in dfu_mtd.c at the end
of the DFU transfer and avoids issues with USB timeout or WATCHDOG.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Patrick Delaunay 3 years ago
parent
commit
2dc41fccf3
1 changed files with 1 additions and 4 deletions
  1. 1 4
      drivers/dfu/dfu_mtd.c

+ 1 - 4
drivers/dfu/dfu_mtd.c

@@ -254,7 +254,6 @@ int dfu_fill_entity_mtd(struct dfu_entity *dfu, char *devstr, char *s)
 {
 	char *st;
 	struct mtd_info *mtd;
-	bool has_pages;
 	int ret, part;
 
 	mtd = get_mtd_device_nm(devstr);
@@ -264,9 +263,7 @@ int dfu_fill_entity_mtd(struct dfu_entity *dfu, char *devstr, char *s)
 
 	dfu->dev_type = DFU_DEV_MTD;
 	dfu->data.mtd.info = mtd;
-
-	has_pages = mtd->type == MTD_NANDFLASH || mtd->type == MTD_MLCNANDFLASH;
-	dfu->max_buf_size = has_pages ? mtd->erasesize : 0;
+	dfu->max_buf_size = mtd->erasesize;
 
 	st = strsep(&s, " ");
 	if (!strcmp(st, "raw")) {