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| author | Axel Lin <axel.lin@ingics.com> | 2014-03-12 18:35:23 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-03-12 16:56:52 +0000 |
| commit | f9f4cbde587335515acaaef9e23028fc0a616292 (patch) | |
| tree | 8807db043d370dd11c26fd6ba7b865ec90bcc241 /drivers/spi/spi-efm32.c | |
| parent | 78e39523b8c9721250b54b7fd930aeced56cf511 (diff) | |
| download | lwn-f9f4cbde587335515acaaef9e23028fc0a616292.tar.gz lwn-f9f4cbde587335515acaaef9e23028fc0a616292.zip | |
spi: efm32: Clean up non-DT paths
This is a DT-only driver, so remove all non-DT paths.
of_gpio_named_count() may fail, thus also add checking it's return value.
efm32_spi_probe_dt() never fails, make it return void.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers/spi/spi-efm32.c')
| -rw-r--r-- | drivers/spi/spi-efm32.c | 31 |
1 files changed, 8 insertions, 23 deletions
diff --git a/drivers/spi/spi-efm32.c b/drivers/spi/spi-efm32.c index 7199d2fd2b0b..0512fedf1f13 100644 --- a/drivers/spi/spi-efm32.c +++ b/drivers/spi/spi-efm32.c @@ -287,16 +287,13 @@ static u32 efm32_spi_get_configured_location(struct efm32_spi_ddata *ddata) return (reg & REG_ROUTE_LOCATION__MASK) >> __ffs(REG_ROUTE_LOCATION__MASK); } -static int efm32_spi_probe_dt(struct platform_device *pdev, +static void efm32_spi_probe_dt(struct platform_device *pdev, struct spi_master *master, struct efm32_spi_ddata *ddata) { struct device_node *np = pdev->dev.of_node; u32 location; int ret; - if (!np) - return 1; - ret = of_property_read_u32(np, "location", &location); if (!ret) { dev_dbg(&pdev->dev, "using location %u\n", location); @@ -308,7 +305,6 @@ static int efm32_spi_probe_dt(struct platform_device *pdev, } ddata->pdata.location = location; - return 0; } static int efm32_spi_probe(struct platform_device *pdev) @@ -318,9 +314,14 @@ static int efm32_spi_probe(struct platform_device *pdev) int ret; struct spi_master *master; struct device_node *np = pdev->dev.of_node; - unsigned int num_cs, i; + int num_cs, i; + + if (!np) + return -EINVAL; num_cs = of_gpio_named_count(np, "cs-gpios"); + if (num_cs < 0) + return num_cs; master = spi_alloc_master(&pdev->dev, sizeof(*ddata) + num_cs * sizeof(unsigned)); @@ -411,23 +412,7 @@ static int efm32_spi_probe(struct platform_device *pdev) goto err; } - ret = efm32_spi_probe_dt(pdev, master, ddata); - if (ret > 0) { - /* not created by device tree */ - const struct efm32_spi_pdata *pdata = - dev_get_platdata(&pdev->dev); - - if (pdata) - ddata->pdata = *pdata; - else - ddata->pdata.location = - efm32_spi_get_configured_location(ddata); - - master->bus_num = pdev->id; - - } else if (ret < 0) { - goto err_disable_clk; - } + efm32_spi_probe_dt(pdev, master, ddata); efm32_spi_write32(ddata, 0, REG_IEN); efm32_spi_write32(ddata, REG_ROUTE_TXPEN | REG_ROUTE_RXPEN | |