From 8fc2faefdd8bd950fa6ef615ab63f8ec3b6de7e5 Mon Sep 17 00:00:00 2001
From: "Wenyou.Yang@microchip.com" <Wenyou.Yang@microchip.com>
Date: Fri, 21 Jul 2017 13:26:09 +0800
Subject: [PATCH] mtd: spi: sf_dataflash: Add print message while erase error
Add the print message to tell us why the erase operation doesn't work.
Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagan Teki <jagan@openedev.com>
---
drivers/mtd/spi/sf_dataflash.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/mtd/spi/sf_dataflash.c b/drivers/mtd/spi/sf_dataflash.c
index bcddfa0755..e5c0e12faa 100644
--- a/drivers/mtd/spi/sf_dataflash.c
+++ b/drivers/mtd/spi/sf_dataflash.c
@@ -134,11 +134,17 @@ static int spi_dataflash_erase(struct udevice *dev, u32 offset, size_t len)
debug("%s: erase addr=0x%x len 0x%x\n", dev->name, offset, len);
div_u64_rem(len, spi_flash->page_size, &rem);
- if (rem)
+ if (rem) {
+ printf("%s: len(0x%x) isn't the multiple of page size(0x%x)\n",
+ dev->name, len, spi_flash->page_size);
return -EINVAL;
+ }
div_u64_rem(offset, spi_flash->page_size, &rem);
- if (rem)
+ if (rem) {
+ printf("%s: offset(0x%x) isn't the multiple of page size(0x%x)\n",
+ dev->name, offset, spi_flash->page_size);
return -EINVAL;
+ }
status = spi_claim_bus(spi);
if (status) {
--
2.39.5