1 files changed, 0 insertions, 123 deletions
diff --git a/target/linux/ramips/patches-4.4/0054-mtd-add-chunked-read-io-to-m25p80.patch b/target/linux/ramips/patches-4.4/0054-mtd-add-chunked-read-io-to-m25p80.patch
deleted file mode 100644
index 8eef3affed..0000000000
--- a/target/linux/ramips/patches-4.4/0054-mtd-add-chunked-read-io-to-m25p80.patch
+++ /dev/null
@@ -1,123 +0,0 @@
---- a/drivers/mtd/spi-nor/spi-nor.c
-+++ b/drivers/mtd/spi-nor/spi-nor.c
-@@ -1014,6 +1014,66 @@ write_err:
- 	return ret;
- }
- 
-+static int spi_nor_chunked_write(struct mtd_info *mtd, loff_t _to, size_t _len,
-+				 size_t *_retlen, const u_char *_buf)
-+{
-+	struct spi_nor *nor = mtd_to_spi_nor(mtd);
-+	int chunk_size;
-+	int retlen = 0;
-+	int ret;
-+
-+	chunk_size = nor->chunk_size;
-+	if (!chunk_size)
-+		chunk_size = _len;
-+
-+	if (nor->addr_width > 3)
-+		chunk_size -= nor->addr_width - 3;
-+
-+	while (retlen < _len) {
-+		size_t len = min_t(int, chunk_size, _len - retlen);
-+		const u_char *buf = _buf + retlen;
-+		loff_t to = _to + retlen;
-+
-+		if (nor->flags & SNOR_F_SST)
-+			ret = sst_write(mtd, to, len, &retlen, buf);
-+		else
-+			ret = spi_nor_write(mtd, to, len, &retlen, buf);
-+		if (ret)
-+			return ret;
-+	}
-+
-+	*_retlen += retlen;
-+	return 0;
-+}
-+
-+static int spi_nor_chunked_read(struct mtd_info *mtd, loff_t _from, size_t _len,
-+				size_t *_retlen, u_char *_buf)
-+{
-+	struct spi_nor *nor = mtd_to_spi_nor(mtd);
-+	int chunk_size;
-+	int ret;
-+
-+	chunk_size = nor->chunk_size;
-+	if (!chunk_size)
-+		chunk_size = _len;
-+
-+	*_retlen = 0;
-+	while (*_retlen < _len) {
-+		size_t len = min_t(int, chunk_size, _len - *_retlen);
-+		u_char *buf = _buf + *_retlen;
-+		loff_t from = _from + *_retlen;
-+		int retlen = 0;
-+
-+		ret = spi_nor_read(mtd, from, len, &retlen, buf);
-+		if (ret)
-+			return ret;
-+
-+		*_retlen += retlen;
-+	}
-+
-+	return 0;
-+}
-+
- static int macronix_quad_enable(struct spi_nor *nor)
- {
- 	int ret, val;
-@@ -1194,10 +1254,12 @@ int spi_nor_scan(struct spi_nor *nor, co
- 	}
- 
- 	/* sst nor chips use AAI word program */
--	if (info->flags & SST_WRITE)
-+	if (info->flags & SST_WRITE) {
- 		mtd->_write = sst_write;
--	else
-+		nor->flags |= SNOR_F_SST;
-+	} else {
- 		mtd->_write = spi_nor_write;
-+	}
- 
- 	if (info->flags & USE_FSR)
- 		nor->flags |= SNOR_F_USE_FSR;
-@@ -1225,11 +1287,20 @@ int spi_nor_scan(struct spi_nor *nor, co
- 	mtd->writebufsize = nor->page_size;
- 
- 	if (np) {
-+		u32 val;
-+
- 		/* If we were instantiated by DT, use it */
- 		if (of_property_read_bool(np, "m25p,fast-read"))
- 			nor->flash_read = SPI_NOR_FAST;
- 		else
- 			nor->flash_read = SPI_NOR_NORMAL;
-+
-+		if (!of_property_read_u32(np, "m25p,chunked-io", &val)) {
-+			dev_info(dev, "using chunked io (size=%d)\n", val);
-+			mtd->_read = spi_nor_chunked_read;
-+			mtd->_write = spi_nor_chunked_write;
-+			nor->chunk_size = val;
-+		}
- 	} else {
- 		/* If we weren't instantiated by DT, default to fast-read */
- 		nor->flash_read = SPI_NOR_FAST;
---- a/include/linux/mtd/spi-nor.h
-+++ b/include/linux/mtd/spi-nor.h
-@@ -116,6 +116,7 @@ enum spi_nor_ops {
- 
- enum spi_nor_option_flags {
- 	SNOR_F_USE_FSR		= BIT(0),
-+	SNOR_F_SST		= BIT(1),
- };
- 
- /**
-@@ -156,6 +157,7 @@ struct spi_nor {
- 	struct device		*dev;
- 	struct device_node	*flash_node;
- 	u32			page_size;
-+	u16			chunk_size;
- 	u8			addr_width;
- 	u8			erase_opcode;
- 	u8			read_opcode;