diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/devices/m25p80.c | 4 | ||||
| -rw-r--r-- | drivers/mtd/devices/mtd_dataflash.c | 2 | ||||
| -rw-r--r-- | drivers/spi/Kconfig | 10 | ||||
| -rw-r--r-- | drivers/spi/Makefile | 1 |
4 files changed, 15 insertions, 2 deletions
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index 45108ed8558..d5f24089be7 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -378,7 +378,9 @@ static int m25p80_write(struct mtd_info *mtd, loff_t to, size_t len, spi_sync(flash->spi, &m); - *retlen += m.actual_length - sizeof(flash->command); + if (retlen) + *retlen += m.actual_length + - sizeof(flash->command); } } diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c index 99d3a0320fc..155737e7483 100644 --- a/drivers/mtd/devices/mtd_dataflash.c +++ b/drivers/mtd/devices/mtd_dataflash.c @@ -508,7 +508,7 @@ add_dataflash(struct spi_device *spi, char *name, priv->partitioned = 1; return add_mtd_partitions(device, parts, nr_parts); } - } else if (pdata->nr_parts) + } else if (pdata && pdata->nr_parts) dev_warn(&spi->dev, "ignoring %d default partitions on %s\n", pdata->nr_parts, device->name); diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index 9b21c5d77b4..7a75faeb052 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -65,6 +65,16 @@ config SPI_BITBANG need it. You only need to select this explicitly to support driver modules that aren't part of this kernel tree. +config SPI_BUTTERFLY + tristate "Parallel port adapter for AVR Butterfly (DEVELOPMENT)" + depends on SPI_MASTER && PARPORT && EXPERIMENTAL + select SPI_BITBANG + help + This uses a custom parallel port cable to connect to an AVR + Butterfly <http://www.atmel.com/products/avr/butterfly>, an + inexpensive battery powered microcontroller evaluation board. + This same cable can be used to flash new firmware. + # # Add new SPI master controllers in alphabetical order above this line # diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile index 5da6a4df401..c2c87e845ab 100644 --- a/drivers/spi/Makefile +++ b/drivers/spi/Makefile @@ -12,6 +12,7 @@ obj-$(CONFIG_SPI_MASTER) += spi.o # SPI master controller drivers (bus) obj-$(CONFIG_SPI_BITBANG) += spi_bitbang.o +obj-$(CONFIG_SPI_BUTTERFLY) += spi_butterfly.o # ... add above this line ... # SPI protocol drivers (device/link on bus) |