From d0b2f91bede3bd5e3d24dd6803e56eee959c1797 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Thu, 20 Oct 2016 00:10:27 -0300
Subject: Linux-libre 4.8.2-gnu
---
drivers/mtd/devices/Kconfig | 18 +++---------------
drivers/mtd/devices/m25p80.c | 37 ++++++++++++++++++++++++-------------
drivers/mtd/devices/powernv_flash.c | 2 +-
3 files changed, 28 insertions(+), 29 deletions(-)
(limited to 'drivers/mtd/devices')
diff --git a/drivers/mtd/devices/Kconfig b/drivers/mtd/devices/Kconfig
index f73c41697..58329d2da 100644
--- a/drivers/mtd/devices/Kconfig
+++ b/drivers/mtd/devices/Kconfig
@@ -113,12 +113,12 @@ config MTD_SST25L
if you want to specify device partitioning.
config MTD_BCM47XXSFLASH
- tristate "R/O support for serial flash on BCMA bus"
- depends on BCMA_SFLASH
+ tristate "Support for serial flash on BCMA bus"
+ depends on BCMA_SFLASH && (MIPS || ARM)
help
BCMA bus can have various flash memories attached, they are
registered by bcma as platform devices. This enables driver for
- serial flash memories (only read-only mode is implemented).
+ serial flash memories.
config MTD_SLRAM
tristate "Uncached system RAM"
@@ -171,18 +171,6 @@ config MTDRAM_ERASE_SIZE
as a module, it is also possible to specify this as a parameter when
loading the module.
-#If not a module (I don't want to test it as a module)
-config MTDRAM_ABS_POS
- hex "SRAM Hexadecimal Absolute position or 0"
- depends on MTD_MTDRAM=y
- default "0"
- help
- If you have system RAM accessible by the CPU but not used by Linux
- in normal operation, you can give the physical address at which the
- available RAM starts, and the MTDRAM driver will use it instead of
- allocating space from Linux's available memory. Otherwise, leave
- this set to zero. Most people will want to leave this as zero.
-
config MTD_BLOCK2MTD
tristate "MTD using block device"
depends on BLOCK
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index 9d6854467..9cf7fcd28 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -73,14 +73,15 @@ static int m25p80_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len)
return spi_write(spi, flash->command, len + 1);
}
-static void m25p80_write(struct spi_nor *nor, loff_t to, size_t len,
- size_t *retlen, const u_char *buf)
+static ssize_t m25p80_write(struct spi_nor *nor, loff_t to, size_t len,
+ const u_char *buf)
{
struct m25p *flash = nor->priv;
struct spi_device *spi = flash->spi;
struct spi_transfer t[2] = {};
struct spi_message m;
int cmd_sz = m25p_cmdsz(nor);
+ ssize_t ret;
spi_message_init(&m);
@@ -98,9 +99,14 @@ static void m25p80_write(struct spi_nor *nor, loff_t to, size_t len,
t[1].len = len;
spi_message_add_tail(&t[1], &m);
- spi_sync(spi, &m);
+ ret = spi_sync(spi, &m);
+ if (ret)
+ return ret;
- *retlen += m.actual_length - cmd_sz;
+ ret = m.actual_length - cmd_sz;
+ if (ret < 0)
+ return -EIO;
+ return ret;
}
static inline unsigned int m25p80_rx_nbits(struct spi_nor *nor)
@@ -119,21 +125,21 @@ static inline unsigned int m25p80_rx_nbits(struct spi_nor *nor)
* Read an address range from the nor chip. The address range
* may be any size provided it is within the physical boundaries.
*/
-static int m25p80_read(struct spi_nor *nor, loff_t from, size_t len,
- size_t *retlen, u_char *buf)
+static ssize_t m25p80_read(struct spi_nor *nor, loff_t from, size_t len,
+ u_char *buf)
{
struct m25p *flash = nor->priv;
struct spi_device *spi = flash->spi;
struct spi_transfer t[2];
struct spi_message m;
unsigned int dummy = nor->read_dummy;
+ ssize_t ret;
/* convert the dummy cycles to the number of bytes */
dummy /= 8;
if (spi_flash_read_supported(spi)) {
struct spi_flash_read_message msg;
- int ret;
memset(&msg, 0, sizeof(msg));
@@ -149,8 +155,9 @@ static int m25p80_read(struct spi_nor *nor, loff_t from, size_t len,
msg.data_nbits = m25p80_rx_nbits(nor);
ret = spi_flash_read(spi, &msg);
- *retlen = msg.retlen;
- return ret;
+ if (ret < 0)
+ return ret;
+ return msg.retlen;
}
spi_message_init(&m);
@@ -165,13 +172,17 @@ static int m25p80_read(struct spi_nor *nor, loff_t from, size_t len,
t[1].rx_buf = buf;
t[1].rx_nbits = m25p80_rx_nbits(nor);
- t[1].len = len;
+ t[1].len = min(len, spi_max_transfer_size(spi));
spi_message_add_tail(&t[1], &m);
- spi_sync(spi, &m);
+ ret = spi_sync(spi, &m);
+ if (ret)
+ return ret;
- *retlen = m.actual_length - m25p_cmdsz(nor) - dummy;
- return 0;
+ ret = m.actual_length - m25p_cmdsz(nor) - dummy;
+ if (ret < 0)
+ return -EIO;
+ return ret;
}
/*
diff --git a/drivers/mtd/devices/powernv_flash.c b/drivers/mtd/devices/powernv_flash.c
index d5b870b3f..f5396f26d 100644
--- a/drivers/mtd/devices/powernv_flash.c
+++ b/drivers/mtd/devices/powernv_flash.c
@@ -95,7 +95,7 @@ static int powernv_flash_async_op(struct mtd_info *mtd, enum flash_op op,
return -EIO;
}
- rc = be64_to_cpu(msg.params[1]);
+ rc = opal_get_async_rc(msg);
if (rc == OPAL_SUCCESS) {
rc = 0;
if (retlen)
--
cgit v1.2.3-54-g00ecf