[U-Boot] [PATCH] Fixing spi erase for S25FL128P_256K

[Marc-André Hébert]

The spansion_erase currently only works when the sector size is 64KB.
cmd[1] should contain the higher 8 bit of the 24 bit address of the
sector to be erased. Currently it is holding the sector index to be
erased which happens to be the same thing when the sector size is
64KB.

Signed-off-by: Marc-Andre Hebert <marc-andre.hebert at humanware.com>
---
 drivers/mtd/spi/spansion.c |    7 +++----
 1 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/mtd/spi/spansion.c b/drivers/mtd/spi/spansion.c
index d6c1a5f..94489af 100644
--- a/drivers/mtd/spi/spansion.c
+++ b/drivers/mtd/spi/spansion.c
@@ -262,7 +262,6 @@ int spansion_erase(struct spi_flash *flash, u32
offset, size_t len)
 		return -1;
 	}

-	len /= sector_size;
 	cmd[0] = CMD_S25FLXX_SE;
 	cmd[2] = 0x00;
 	cmd[3] = 0x00;
@@ -274,8 +273,8 @@ int spansion_erase(struct spi_flash *flash, u32
offset, size_t len)
 	}

 	ret = 0;
-	for (actual = 0; actual < len; actual++) {
-		cmd[1] = (offset / sector_size) + actual;
+	for (actual = 0; actual < len; actual+=sector_size) {
+		cmd[1] = (offset + actual) >> 16;

 		ret = spi_flash_cmd(flash->spi, CMD_S25FLXX_WREN, NULL, 0);
 		if (ret < 0) {
@@ -298,7 +297,7 @@ int spansion_erase(struct spi_flash *flash, u32
offset, size_t len)
 	}

 	debug("SF: SPANSION: Successfully erased %u bytes @ 0x%x\n",
-	      len * sector_size, offset);
+	      len, offset);

 	spi_release_bus(flash->spi);
 	return ret;
-- 
1.6.0.4