summaryrefslogtreecommitdiff
path: root/target/linux/brcm63xx/patches-3.14/203-MTD-DEVICES-m25p80-add-support-for-limiting-reads.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/brcm63xx/patches-3.14/203-MTD-DEVICES-m25p80-add-support-for-limiting-reads.patch')
-rw-r--r--target/linux/brcm63xx/patches-3.14/203-MTD-DEVICES-m25p80-add-support-for-limiting-reads.patch92
1 files changed, 0 insertions, 92 deletions
diff --git a/target/linux/brcm63xx/patches-3.14/203-MTD-DEVICES-m25p80-add-support-for-limiting-reads.patch b/target/linux/brcm63xx/patches-3.14/203-MTD-DEVICES-m25p80-add-support-for-limiting-reads.patch
deleted file mode 100644
index e5676dc..0000000
--- a/target/linux/brcm63xx/patches-3.14/203-MTD-DEVICES-m25p80-add-support-for-limiting-reads.patch
+++ /dev/null
@@ -1,92 +0,0 @@
-From 5fb4e8d7287ac8fcb33aae8b1e9e22c5a3c392bd Mon Sep 17 00:00:00 2001
-From: Jonas Gorski <jonas.gorski@gmail.com>
-Date: Thu, 10 Nov 2011 17:33:40 +0100
-Subject: [PATCH 51/79] MTD: DEVICES: m25p80: add support for limiting reads
-
-Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
----
- drivers/mtd/devices/m25p80.c | 29 +++++++++++++++++++++++++++--
- include/linux/spi/flash.h | 4 ++++
- 2 files changed, 31 insertions(+), 2 deletions(-)
-
---- a/drivers/mtd/devices/m25p80.c
-+++ b/drivers/mtd/devices/m25p80.c
-@@ -115,6 +115,7 @@ struct m25p {
- u8 program_opcode;
- u8 *command;
- enum read_type flash_read;
-+ int max_transfer_len;
- };
-
- static inline struct m25p *mtd_to_m25p(struct mtd_info *mtd)
-@@ -509,10 +510,9 @@ static inline unsigned int m25p80_rx_nbi
- * Read an address range from the flash chip. The address range
- * may be any size provided it is within the physical boundaries.
- */
--static int m25p80_read(struct mtd_info *mtd, loff_t from, size_t len,
-+static int __m25p80_read(struct m25p *flash, loff_t from, size_t len,
- size_t *retlen, u_char *buf)
- {
-- struct m25p *flash = mtd_to_m25p(mtd);
- struct spi_transfer t[2];
- struct spi_message m;
- uint8_t opcode;
-@@ -562,6 +562,28 @@ static int m25p80_read(struct mtd_info *
- return 0;
- }
-
-+static int m25p80_read(struct mtd_info *mtd, loff_t from, size_t len,
-+ size_t *retlen, u_char *buf)
-+{
-+ struct m25p *flash = mtd_to_m25p(mtd);
-+ size_t off;
-+ size_t read_len = flash->max_transfer_len;
-+ size_t part_len;
-+ int ret = 0;
-+
-+ if (!read_len)
-+ return __m25p80_read(flash, from, len, retlen, buf);
-+
-+ *retlen = 0;
-+
-+ for (off = 0; off < len && !ret; off += read_len) {
-+ ret = __m25p80_read(flash, from + off, min(len - off, read_len),
-+ &part_len, buf + off);
-+ *retlen += part_len;
-+ }
-+
-+ return ret;
-+}
- /*
- * Write an address range to the flash chip. Data must be written in
- * FLASH_PAGESIZE chunks. The address range may be any size provided
-@@ -1159,6 +1181,9 @@ static int m25p_probe(struct spi_device
- if (!flash->command)
- return -ENOMEM;
-
-+ if (data)
-+ flash->max_transfer_len = data->max_transfer_len;
-+
- flash->spi = spi;
- mutex_init(&flash->lock);
- spi_set_drvdata(spi, flash);
---- a/include/linux/spi/flash.h
-+++ b/include/linux/spi/flash.h
-@@ -13,6 +13,8 @@ struct mtd_part_parser_data;
- * @part_probe_types: optional list of MTD parser names to use for
- * partitioning
- *
-+ * @max_transfer_len: option maximum read/write length limitation for
-+ * SPI controllers not able to transfer any length commands.
- * Board init code (in arch/.../mach-xxx/board-yyy.c files) can
- * provide information about SPI flash parts (such as DataFlash) to
- * help set up the device and its appropriate default partitioning.
-@@ -28,6 +30,8 @@ struct flash_platform_data {
- char *type;
-
- const char **part_probe_types;
-+
-+ unsigned int max_transfer_len;
- /* we'll likely add more ... use JEDEC IDs, etc */
- };
-