Add the print message to tell us why the erase operation doesn't work.
Signed-off-by: Wenyou Yang <wenyou.y...@microchip.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 b2166ad4e5..a1a79a4d02 100644
--- a/drivers/mtd/spi/sf_dataflash.c
+++ b/drivers/mtd/spi/sf_dataflash.c
@@ -131,11 +131,17 @@ 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) {
--
2.13.0
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