In stmicro_erase() correctly calculate the high byte of the sector address.
Signed-off-by: Gary Jennejohn <ga...@denx.de>
---
drivers/mtd/spi/stmicro.c | 8 +++++++-
1 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/drivers/mtd/spi/stmicro.c b/drivers/mtd/spi/stmicro.c
index 9b910c1..b5808c5 100644
--- a/drivers/mtd/spi/stmicro.c
+++ b/drivers/mtd/spi/stmicro.c
@@ -281,7 +281,13 @@ int stmicro_erase(struct spi_flash *flash, u32 offset,
size_t len)
ret = 0;
for (actual = 0; actual < len; actual++) {
- cmd[1] = (offset / sector_size) + actual;
+ /*
+ * Correctly calculate the high byte of the address.
+ *
+ * Note that the new code basically does what the
+ * Linux driver does.
+ */
+ cmd[1] = ((offset + actual * sector_size) >> 16) & 0xff;
ret = spi_flash_cmd(flash->spi, CMD_M25PXX_WREN, NULL, 0);
if (ret < 0) {
--
1.6.2.5
---
Gary Jennejohn
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