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Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/onenand/onenand_base.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index 779327b845d..a7645794364 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -636,6 +636,29 @@ static void onenand_update_bufferram(struct mtd_info *mtd, loff_t addr,
}
/**
+ * onenand_invalidate_bufferram - [GENERIC] Invalidate BufferRAM information
+ * @param mtd MTD data structure
+ * @param addr start address to invalidate
+ * @param len length to invalidate
+ *
+ * Invalidate BufferRAM information
+ */
+static void onenand_invalidate_bufferram(struct mtd_info *mtd, loff_t addr,
+ unsigned int len)
+{
+ struct onenand_chip *this = mtd->priv;
+ int i;
+ loff_t end_addr = addr + len;
+
+ /* Invalidate BufferRAM */
+ for (i = 0; i < MAX_BUFFERRAM; i++) {
+ loff_t buf_addr = this->bufferram[i].blockpage << this->page_shift;
+ if (buf_addr >= addr && buf_addr < end_addr)
+ this->bufferram[i].blockpage = -1;
+ }
+}
+
+/**
* onenand_get_device - [GENERIC] Get chip for selected access
* @param mtd MTD device structure
* @param new_state the state which is requested
@@ -1476,6 +1499,8 @@ static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr)
this->command(mtd, ONENAND_CMD_ERASE, addr, block_size);
+ onenand_invalidate_bufferram(mtd, addr, block_size);
+
ret = this->wait(mtd, FL_ERASING);
/* Check, if it is write protected */
if (ret) {