On 19.08.2015 06:05, Heiner Kallweit wrote:
> Simplify the probe function by replacing all occurrences of &pdev->dev
> with a local variable.
>
> Signed-off-by: Heiner Kallweit <[email protected]>
> ---
> drivers/spi/spi-s3c64xx.c | 58
> +++++++++++++++++++++++------------------------
> 1 file changed, 29 insertions(+), 29 deletions(-)
I don't see simplification here (the same number of insertions as
deletions, code is exactly the same). &pdev->dev is a common pattern in
most of platform drivers.
Best regards,
Krzysztof
>
> diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
> index cd1cfac..c4d3b06 100644
> --- a/drivers/spi/spi-s3c64xx.c
> +++ b/drivers/spi/spi-s3c64xx.c
> @@ -1024,39 +1024,39 @@ static inline struct s3c64xx_spi_port_config
> *s3c64xx_spi_get_port_config(
>
> static int s3c64xx_spi_probe(struct platform_device *pdev)
> {
> + struct device *dev = &pdev->dev;
> struct resource *mem_res;
> struct resource *res;
> struct s3c64xx_spi_driver_data *sdd;
> - struct s3c64xx_spi_info *sci = dev_get_platdata(&pdev->dev);
> + struct s3c64xx_spi_info *sci = dev_get_platdata(dev);
> struct spi_master *master;
> int ret, irq;
> char clk_name[16];
>
> - if (!sci && pdev->dev.of_node) {
> - sci = s3c64xx_spi_parse_dt(&pdev->dev);
> + if (!sci && dev->of_node) {
> + sci = s3c64xx_spi_parse_dt(dev);
> if (IS_ERR(sci))
> return PTR_ERR(sci);
> }
>
> if (!sci) {
> - dev_err(&pdev->dev, "platform_data missing!\n");
> + dev_err(dev, "platform_data missing!\n");
> return -ENODEV;
> }
>
> mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> if (mem_res == NULL) {
> - dev_err(&pdev->dev, "Unable to get SPI MEM resource\n");
> + dev_err(dev, "Unable to get SPI MEM resource\n");
> return -ENXIO;
> }
>
> irq = platform_get_irq(pdev, 0);
> if (irq < 0) {
> - dev_warn(&pdev->dev, "Failed to get IRQ: %d\n", irq);
> + dev_warn(dev, "Failed to get IRQ: %d\n", irq);
> return irq;
> }
>
> - master = spi_alloc_master(&pdev->dev,
> - sizeof(struct s3c64xx_spi_driver_data));
> + master = spi_alloc_master(dev, sizeof(struct s3c64xx_spi_driver_data));
> if (master == NULL) {
> dev_err(&pdev->dev, "Unable to allocate SPI Master\n");
> return -ENOMEM;
> @@ -1071,9 +1071,9 @@ static int s3c64xx_spi_probe(struct platform_device
> *pdev)
> sdd->pdev = pdev;
> sdd->sfr_start = mem_res->start;
> if (pdev->dev.of_node) {
> - ret = of_alias_get_id(pdev->dev.of_node, "spi");
> + ret = of_alias_get_id(dev->of_node, "spi");
> if (ret < 0) {
> - dev_err(&pdev->dev, "failed to get alias id, errno
> %d\n",
> + dev_err(dev, "failed to get alias id, errno %d\n",
> ret);
> goto err0;
> }
> @@ -1087,14 +1087,14 @@ static int s3c64xx_spi_probe(struct platform_device
> *pdev)
> if (!sdd->pdev->dev.of_node) {
> res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
> if (!res) {
> - dev_warn(&pdev->dev, "Unable to get SPI tx dma
> resource. Switching to poll mode\n");
> + dev_warn(dev, "Unable to get SPI tx dma resource.
> Switching to poll mode\n");
> sdd->port_conf->quirks = S3C64XX_SPI_QUIRK_POLL;
> } else
> sdd->tx_dma.dmach = res->start;
>
> res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
> if (!res) {
> - dev_warn(&pdev->dev, "Unable to get SPI rx dma
> resource. Switching to poll mode\n");
> + dev_warn(dev, "Unable to get SPI rx dma resource.
> Switching to poll mode\n");
> sdd->port_conf->quirks = S3C64XX_SPI_QUIRK_POLL;
> } else
> sdd->rx_dma.dmach = res->start;
> @@ -1103,7 +1103,7 @@ static int s3c64xx_spi_probe(struct platform_device
> *pdev)
> sdd->tx_dma.direction = DMA_MEM_TO_DEV;
> sdd->rx_dma.direction = DMA_DEV_TO_MEM;
>
> - master->dev.of_node = pdev->dev.of_node;
> + master->dev.of_node = dev->of_node;
> master->bus_num = sdd->port_id;
> master->setup = s3c64xx_spi_setup;
> master->cleanup = s3c64xx_spi_cleanup;
> @@ -1121,43 +1121,43 @@ static int s3c64xx_spi_probe(struct platform_device
> *pdev)
> if (!is_polling(sdd))
> master->can_dma = s3c64xx_spi_can_dma;
>
> - sdd->regs = devm_ioremap_resource(&pdev->dev, mem_res);
> + sdd->regs = devm_ioremap_resource(dev, mem_res);
> if (IS_ERR(sdd->regs)) {
> ret = PTR_ERR(sdd->regs);
> goto err0;
> }
>
> if (sci->cfg_gpio && sci->cfg_gpio()) {
> - dev_err(&pdev->dev, "Unable to config gpio\n");
> + dev_err(dev, "Unable to config gpio\n");
> ret = -EBUSY;
> goto err0;
> }
>
> /* Setup clocks */
> - sdd->clk = devm_clk_get(&pdev->dev, "spi");
> + sdd->clk = devm_clk_get(dev, "spi");
> if (IS_ERR(sdd->clk)) {
> - dev_err(&pdev->dev, "Unable to acquire clock 'spi'\n");
> + dev_err(dev, "Unable to acquire clock 'spi'\n");
> ret = PTR_ERR(sdd->clk);
> goto err0;
> }
>
> if (clk_prepare_enable(sdd->clk)) {
> - dev_err(&pdev->dev, "Couldn't enable clock 'spi'\n");
> + dev_err(dev, "Couldn't enable clock 'spi'\n");
> ret = -EBUSY;
> goto err0;
> }
>
> sprintf(clk_name, "spi_busclk%d", sci->src_clk_nr);
> - sdd->src_clk = devm_clk_get(&pdev->dev, clk_name);
> + sdd->src_clk = devm_clk_get(dev, clk_name);
> if (IS_ERR(sdd->src_clk)) {
> - dev_err(&pdev->dev,
> + dev_err(dev,
> "Unable to acquire clock '%s'\n", clk_name);
> ret = PTR_ERR(sdd->src_clk);
> goto err2;
> }
>
> if (clk_prepare_enable(sdd->src_clk)) {
> - dev_err(&pdev->dev, "Couldn't enable clock '%s'\n", clk_name);
> + dev_err(dev, "Couldn't enable clock '%s'\n", clk_name);
> ret = -EBUSY;
> goto err2;
> }
> @@ -1168,10 +1168,10 @@ static int s3c64xx_spi_probe(struct platform_device
> *pdev)
> spin_lock_init(&sdd->lock);
> init_completion(&sdd->xfer_completion);
>
> - ret = devm_request_irq(&pdev->dev, irq, s3c64xx_spi_irq, 0,
> + ret = devm_request_irq(dev, irq, s3c64xx_spi_irq, 0,
> "spi-s3c64xx", sdd);
> if (ret != 0) {
> - dev_err(&pdev->dev, "Failed to request IRQ %d: %d\n",
> + dev_err(dev, "Failed to request IRQ %d: %d\n",
> irq, ret);
> goto err3;
> }
> @@ -1180,18 +1180,18 @@ static int s3c64xx_spi_probe(struct platform_device
> *pdev)
> S3C64XX_SPI_INT_TX_OVERRUN_EN | S3C64XX_SPI_INT_TX_UNDERRUN_EN,
> sdd->regs + S3C64XX_SPI_INT_EN);
>
> - pm_runtime_set_active(&pdev->dev);
> - pm_runtime_enable(&pdev->dev);
> + pm_runtime_set_active(dev);
> + pm_runtime_enable(dev);
>
> - ret = devm_spi_register_master(&pdev->dev, master);
> + ret = devm_spi_register_master(dev, master);
> if (ret != 0) {
> - dev_err(&pdev->dev, "cannot register SPI master: %d\n", ret);
> + dev_err(dev, "cannot register SPI master: %d\n", ret);
> goto err3;
> }
>
> - dev_dbg(&pdev->dev, "Samsung SoC SPI Driver loaded for Bus SPI-%d with
> %d Slaves attached\n",
> + dev_dbg(dev, "Samsung SoC SPI Driver loaded for Bus SPI-%d with %d
> Slaves attached\n",
> sdd->port_id, master->num_chipselect);
> - dev_dbg(&pdev->dev, "\tIOmem=[%pR]\tFIFO %dbytes\tDMA=[Rx-%d, Tx-%d]\n",
> + dev_dbg(dev, "\tIOmem=[%pR]\tFIFO %dbytes\tDMA=[Rx-%d, Tx-%d]\n",
> mem_res, (FIFO_LVL_MASK(sdd) >> 1) + 1,
> sdd->rx_dma.dmach, sdd->tx_dma.dmach);
>
>
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