From 2dc41fccf347e8acba980d7bad1507cfadf11476 Mon Sep 17 00:00:00 2001 From: Patrick Delaunay Date: Thu, 4 Mar 2021 17:47:56 +0100 Subject: [PATCH] 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 Reviewed-by: Patrice Chotard --- drivers/dfu/dfu_mtd.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/dfu/dfu_mtd.c b/drivers/dfu/dfu_mtd.c index ec40b8f..894b570 100644 --- a/drivers/dfu/dfu_mtd.c +++ b/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")) { -- 2.7.4