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Subject[PATCH 2/2] spi: spi-geni-qcom: Simplify probe function
Date
Re-arrange existing APIs in probe function to
avoid using goto and remove redundant variables.

Signed-off-by: Alok Chauhan <alokc@codeaurora.org>
---
drivers/spi/spi-geni-qcom.c | 49 ++++++++++++++++++++++-----------------------
1 file changed, 24 insertions(+), 25 deletions(-)

diff --git a/drivers/spi/spi-geni-qcom.c b/drivers/spi/spi-geni-qcom.c
index d1830fb..fdb7cb88 100644
--- a/drivers/spi/spi-geni-qcom.c
+++ b/drivers/spi/spi-geni-qcom.c
@@ -535,11 +535,30 @@ static irqreturn_t geni_spi_isr(int irq, void *data)

static int spi_geni_probe(struct platform_device *pdev)
{
- int ret;
+ int ret, irq;
struct spi_master *spi;
struct spi_geni_master *mas;
struct resource *res;
- struct geni_se *se;
+ void __iomem *base;
+ struct clk *clk;
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ dev_err(&pdev->dev, "Err getting IRQ %d\n", irq);
+ return irq;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ clk = devm_clk_get(&pdev->dev, "se");
+ if (IS_ERR(clk)) {
+ dev_err(&pdev->dev, "Err getting SE Core clk %ld\n",
+ PTR_ERR(clk));
+ return PTR_ERR(clk);
+ }

spi = spi_alloc_master(&pdev->dev, sizeof(*mas));
if (!spi)
@@ -547,27 +566,15 @@ static int spi_geni_probe(struct platform_device *pdev)

platform_set_drvdata(pdev, spi);
mas = spi_master_get_devdata(spi);
+ mas->irq = irq;
mas->dev = &pdev->dev;
mas->se.dev = &pdev->dev;
mas->se.wrapper = dev_get_drvdata(pdev->dev.parent);
- se = &mas->se;
+ mas->se.base = base;
+ mas->se.clk = clk;

spi->bus_num = -1;
spi->dev.of_node = pdev->dev.of_node;
- mas->se.clk = devm_clk_get(&pdev->dev, "se");
- if (IS_ERR(mas->se.clk)) {
- ret = PTR_ERR(mas->se.clk);
- dev_err(&pdev->dev, "Err getting SE Core clk %d\n", ret);
- goto spi_geni_probe_err;
- }
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- se->base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(se->base)) {
- ret = PTR_ERR(se->base);
- goto spi_geni_probe_err;
- }
-
spi->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LOOP | SPI_CS_HIGH;
spi->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32);
spi->num_chipselect = 4;
@@ -586,13 +593,6 @@ static int spi_geni_probe(struct platform_device *pdev)
if (ret)
goto spi_geni_probe_runtime_disable;

- mas->irq = platform_get_irq(pdev, 0);
- if (mas->irq < 0) {
- ret = mas->irq;
- dev_err(&pdev->dev, "Err getting IRQ %d\n", ret);
- goto spi_geni_probe_runtime_disable;
- }
-
ret = request_irq(mas->irq, geni_spi_isr,
IRQF_TRIGGER_HIGH, "spi_geni", spi);
if (ret)
@@ -607,7 +607,6 @@ static int spi_geni_probe(struct platform_device *pdev)
free_irq(mas->irq, spi);
spi_geni_probe_runtime_disable:
pm_runtime_disable(&pdev->dev);
-spi_geni_probe_err:
spi_master_put(spi);
return ret;
}
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
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