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--- a/drivers/mtd/devices/Kconfig
+++ b/drivers/mtd/devices/Kconfig
@@ -102,6 +102,14 @@ config MTD_SPEAR_SMI
help
This enable SNOR support on SPEAR platforms using SMI controller
+config M25PXX_PREFER_SMALL_SECTOR_ERASE
+ bool "Prefer small sector erase"
+ depends on MTD_M25P80
+ default y
+ help
+ This option enables use of the small erase sectors if that is
+ supported by the flash chip.
+
config MTD_SST25L
tristate "Support SST25L (non JEDEC) SPI Flash chips"
depends on SPI_MASTER
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -90,6 +90,12 @@
#define JEDEC_MFR(_jedec_id) ((_jedec_id) >> 16)
+#ifdef CONFIG_M25PXX_PREFER_SMALL_SECTOR_ERASE
+#define PREFER_SMALL_SECTOR_ERASE 1
+#else
+#define PREFER_SMALL_SECTOR_ERASE 0
+#endif
+
/****************************************************************************/
enum read_type {
@@ -1195,7 +1201,7 @@ static int m25p_probe(struct spi_device
flash->mtd._write = m25p80_write;
/* prefer "small sector" erase if possible */
- if (info->flags & SECT_4K) {
+ if (PREFER_SMALL_SECTOR_ERASE && (info->flags & SECT_4K)) {
flash->erase_opcode = OPCODE_BE_4K;
flash->mtd.erasesize = 4096;
} else if (info->flags & SECT_4K_PMC) {
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