1 files changed, 0 insertions, 109 deletions
diff --git a/target/linux/ar71xx/patches-3.6/406-mtd-m25p80-allow-to-specify-max-read-size.patch b/target/linux/ar71xx/patches-3.6/406-mtd-m25p80-allow-to-specify-max-read-size.patch
deleted file mode 100644
index c067f9c..0000000
--- a/target/linux/ar71xx/patches-3.6/406-mtd-m25p80-allow-to-specify-max-read-size.patch
+++ /dev/null
@@ -1,109 +0,0 @@
---- a/drivers/mtd/devices/m25p80.c
-+++ b/drivers/mtd/devices/m25p80.c
-@@ -100,6 +100,7 @@ struct m25p {
- 	u16			addr_width;
- 	u8			erase_opcode;
- 	u8			*command;
-+	size_t			max_read_len;
- };
- 
- static inline struct m25p *mtd_to_m25p(struct mtd_info *mtd)
-@@ -349,6 +350,7 @@ static int m25p80_read(struct mtd_info *
- 	struct m25p *flash = mtd_to_m25p(mtd);
- 	struct spi_transfer t[2];
- 	struct spi_message m;
-+	loff_t ofs;
- 
- 	pr_debug("%s: %s from 0x%08x, len %zd\n", dev_name(&flash->spi->dev),
- 			__func__, (u32)from, len);
-@@ -364,19 +366,10 @@ static int m25p80_read(struct mtd_info *
- 	t[0].len = m25p_cmdsz(flash) + FAST_READ_DUMMY_BYTE;
- 	spi_message_add_tail(&t[0], &m);
- 
--	t[1].rx_buf = buf;
--	t[1].len = len;
- 	spi_message_add_tail(&t[1], &m);
- 
- 	mutex_lock(&flash->lock);
- 
--	/* Wait till previous write/erase is done. */
--	if (wait_till_ready(flash)) {
--		/* REVISIT status return?? */
--		mutex_unlock(&flash->lock);
--		return 1;
--	}
--
- 	/* FIXME switch to OPCODE_FAST_READ.  It's required for higher
- 	 * clocks; and at this writing, every chip this driver handles
- 	 * supports that opcode.
-@@ -384,11 +377,44 @@ static int m25p80_read(struct mtd_info *
- 
- 	/* Set up the write data buffer. */
- 	flash->command[0] = OPCODE_READ;
--	m25p_addr2cmd(flash, from, flash->command);
- 
--	spi_sync(flash->spi, &m);
-+	ofs = 0;
-+	while (len) {
-+		size_t readlen;
-+		size_t done;
-+		int ret;
-+
-+		ret = wait_till_ready(flash);
-+		if (ret) {
-+			mutex_unlock(&flash->lock);
-+			return 1;
-+		}
-+
-+		if (flash->max_read_len > 0 &&
-+		    flash->max_read_len < len)
-+			readlen = flash->max_read_len;
-+		else
-+			readlen = len;
-+
-+		t[1].rx_buf = buf + ofs;
-+		t[1].len = readlen;
-+
-+		m25p_addr2cmd(flash, from + ofs, flash->command);
-+
-+		spi_sync(flash->spi, &m);
- 
--	*retlen = m.actual_length - m25p_cmdsz(flash) - FAST_READ_DUMMY_BYTE;
-+		done = m.actual_length - m25p_cmdsz(flash) -
-+		       FAST_READ_DUMMY_BYTE;
-+		if (done != readlen) {
-+			mutex_unlock(&flash->lock);
-+			return 1;
-+		}
-+
-+		ofs += done;
-+		len -= done;
-+	}
-+
-+	*retlen = ofs;
- 
- 	mutex_unlock(&flash->lock);
- 
-@@ -899,6 +925,12 @@ static int __devinit m25p_probe(struct s
- 	flash->mtd._erase = m25p80_erase;
- 	flash->mtd._read = m25p80_read;
- 
-+	if (data && data->max_read_len) {
-+		flash->max_read_len = data->max_read_len;
-+		dev_warn(&spi->dev, "max_read_len set to %d bytes\n",
-+			flash->max_read_len);
-+	}
-+
- 	/* sst flash chips use AAI word program */
- 	if (JEDEC_MFR(info->jedec_id) == CFI_MFR_SST)
- 		flash->mtd._write = sst_write;
---- a/include/linux/spi/flash.h
-+++ b/include/linux/spi/flash.h
-@@ -25,6 +25,7 @@ struct flash_platform_data {
- 
- 	char		*type;
- 
-+	size_t		max_read_len;
- 	/* we'll likely add more ... use JEDEC IDs, etc */
- };
-