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authorJeffy Chen <jeffy.chen@rock-chips.com>2017-06-13 13:25:40 +0800
committerMark Brown <broonie@kernel.org>2017-06-13 20:12:30 +0100
commitc351587e2502050f36d16e9e32c6c98975ecd6a2 (patch)
treeaa410b75c09c3b64aeb363b24c914536ac702301 /drivers/spi
parent2ea659a9ef488125eb46da6eb571de5eae5c43f6 (diff)
spi: rockchip: fix error handling when probe
After failed to request dma tx chain, we need to disable pm_runtime. Also cleanup error labels for better readability. Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com> Reviewed-by: Brian Norris <briannorris@chromium.org> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/spi-rockchip.c27
1 files changed, 14 insertions, 13 deletions
diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
index acf31f36b898..bab9b13f0ad0 100644
--- a/drivers/spi/spi-rockchip.c
+++ b/drivers/spi/spi-rockchip.c
@@ -684,33 +684,33 @@ static int rockchip_spi_probe(struct platform_device *pdev)
rs->regs = devm_ioremap_resource(&pdev->dev, mem);
if (IS_ERR(rs->regs)) {
ret = PTR_ERR(rs->regs);
- goto err_ioremap_resource;
+ goto err_put_master;
}
rs->apb_pclk = devm_clk_get(&pdev->dev, "apb_pclk");
if (IS_ERR(rs->apb_pclk)) {
dev_err(&pdev->dev, "Failed to get apb_pclk\n");
ret = PTR_ERR(rs->apb_pclk);
- goto err_ioremap_resource;
+ goto err_put_master;
}
rs->spiclk = devm_clk_get(&pdev->dev, "spiclk");
if (IS_ERR(rs->spiclk)) {
dev_err(&pdev->dev, "Failed to get spi_pclk\n");
ret = PTR_ERR(rs->spiclk);
- goto err_ioremap_resource;
+ goto err_put_master;
}
ret = clk_prepare_enable(rs->apb_pclk);
if (ret) {
dev_err(&pdev->dev, "Failed to enable apb_pclk\n");
- goto err_ioremap_resource;
+ goto err_put_master;
}
ret = clk_prepare_enable(rs->spiclk);
if (ret) {
dev_err(&pdev->dev, "Failed to enable spi_clk\n");
- goto err_spiclk_enable;
+ goto err_disable_apbclk;
}
spi_enable_chip(rs, 0);
@@ -728,7 +728,7 @@ static int rockchip_spi_probe(struct platform_device *pdev)
if (!rs->fifo_len) {
dev_err(&pdev->dev, "Failed to get fifo length\n");
ret = -EINVAL;
- goto err_get_fifo_len;
+ goto err_disable_spiclk;
}
spin_lock_init(&rs->lock);
@@ -755,7 +755,7 @@ static int rockchip_spi_probe(struct platform_device *pdev)
/* Check tx to see if we need defer probing driver */
if (PTR_ERR(rs->dma_tx.ch) == -EPROBE_DEFER) {
ret = -EPROBE_DEFER;
- goto err_get_fifo_len;
+ goto err_disable_pm_runtime;
}
dev_warn(rs->dev, "Failed to request TX DMA channel\n");
rs->dma_tx.ch = NULL;
@@ -786,23 +786,24 @@ static int rockchip_spi_probe(struct platform_device *pdev)
ret = devm_spi_register_master(&pdev->dev, master);
if (ret) {
dev_err(&pdev->dev, "Failed to register master\n");
- goto err_register_master;
+ goto err_free_dma_rx;
}
return 0;
-err_register_master:
- pm_runtime_disable(&pdev->dev);
+err_free_dma_rx:
if (rs->dma_rx.ch)
dma_release_channel(rs->dma_rx.ch);
err_free_dma_tx:
if (rs->dma_tx.ch)
dma_release_channel(rs->dma_tx.ch);
-err_get_fifo_len:
+err_disable_pm_runtime:
+ pm_runtime_disable(&pdev->dev);
+err_disable_spiclk:
clk_disable_unprepare(rs->spiclk);
-err_spiclk_enable:
+err_disable_apbclk:
clk_disable_unprepare(rs->apb_pclk);
-err_ioremap_resource:
+err_put_master:
spi_master_put(master);
return ret;