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Merge remote-tracking branch 'spi/fix/grant' into spi-linus

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This commit is contained in:
Mark Brown 2013-05-13 18:27:18 +04:00
commit 88b0357dde
4 changed files with 11 additions and 8 deletions
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4
drivers/spi/spi-atmel.c
View file

@ -1408,8 +1408,8 @@ static int atmel_spi_transfer(struct spi_device *spi, struct spi_message *msg)
}
/* FIXME implement these protocol options!! */
if (xfer->speed_hz) {
dev_dbg(&spi->dev, "no protocol options yet\n");
if (xfer->speed_hz < spi->max_speed_hz) {
dev_dbg(&spi->dev, "can't change speed in transfer\n");
return -ENOPROTOOPT;
}

2
drivers/spi/spi-davinci.c
View file

@ -784,7 +784,7 @@ static const struct of_device_id davinci_spi_of_match[] = {
},
{ },
};
MODULE_DEVICE_TABLE(of, davini_spi_of_match);
MODULE_DEVICE_TABLE(of, davinci_spi_of_match);
/**
* spi_davinci_get_pdata - Get platform data from DTS binding

9
drivers/spi/spi.c
View file

@ -334,7 +334,7 @@ struct spi_device *spi_alloc_device(struct spi_master *master)
spi->dev.parent = &master->dev;
spi->dev.bus = &spi_bus_type;
spi->dev.release = spidev_release;
spi->cs_gpio = -EINVAL;
spi->cs_gpio = -ENOENT;
device_initialize(&spi->dev);
return spi;
}
@ -1067,8 +1067,11 @@ static int of_spi_register_master(struct spi_master *master)
nb = of_gpio_named_count(np, "cs-gpios");
master->num_chipselect = max(nb, (int)master->num_chipselect);
if (nb < 1)
/* Return error only for an incorrectly formed cs-gpios property */
if (nb == 0 || nb == -ENOENT)
return 0;
else if (nb < 0)
return nb;
cs = devm_kzalloc(&master->dev,
sizeof(int) * master->num_chipselect,
@ -1079,7 +1082,7 @@ static int of_spi_register_master(struct spi_master *master)
return -ENOMEM;
for (i = 0; i < master->num_chipselect; i++)
cs[i] = -EINVAL;
cs[i] = -ENOENT;
for (i = 0; i < nb; i++)
cs[i] = of_get_named_gpio(np, "cs-gpios", i);

4
include/linux/spi/spi.h
View file

@ -57,7 +57,7 @@ extern struct bus_type spi_bus_type;
* @modalias: Name of the driver to use with this device, or an alias
* for that name. This appears in the sysfs "modalias" attribute
* for driver coldplugging, and in uevents used for hotplugging
* @cs_gpio: gpio number of the chipselect line (optional, -EINVAL when
* @cs_gpio: gpio number of the chipselect line (optional, -ENOENT when
* when not using a GPIO line)
*
* A @spi_device is used to interchange data between an SPI slave
@ -266,7 +266,7 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv)
* queue so the subsystem notifies the driver that it may relax the
* hardware by issuing this call
* @cs_gpios: Array of GPIOs to use as chip select lines; one per CS
* number. Any individual value may be -EINVAL for CS lines that
* number. Any individual value may be -ENOENT for CS lines that
* are not GPIOs (driven by the SPI controller itself).
*
* Each SPI master controller can communicate with one or more @spi_device