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spi: ti-qspi: revise ti_qspi_probe() failure flow

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call spi_master_put() in case of failures after spi_alloc_master().
call pm_runtime_disable() in case of failures after pm_runtime_enable().

Signed-off-by: Prahlad V <prahlad.eee@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Prahlad V 2017-02-17 02:03:35 +05:30 committed by Mark Brown
parent fafd679407
commit cce59c2259
1 changed files with 10 additions and 5 deletions
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15
drivers/spi/spi-ti-qspi.c
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@ -652,7 +652,8 @@ static int ti_qspi_probe(struct platform_device *pdev)
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (r == NULL) {
dev_err(&pdev->dev, "missing platform data\n");
return -ENODEV;
ret = -ENODEV;
goto free_master;
}
}
@ -669,7 +670,8 @@ static int ti_qspi_probe(struct platform_device *pdev)
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
dev_err(&pdev->dev, "no irq resource?\n");
return irq;
ret = irq;
goto free_master;
}
mutex_init(&qspi->list_lock);
@ -685,15 +687,17 @@ static int ti_qspi_probe(struct platform_device *pdev)
qspi->ctrl_base =
syscon_regmap_lookup_by_phandle(np,
"syscon-chipselects");
if (IS_ERR(qspi->ctrl_base))
return PTR_ERR(qspi->ctrl_base);
if (IS_ERR(qspi->ctrl_base)) {
ret = PTR_ERR(qspi->ctrl_base);
goto free_master;
}
ret = of_property_read_u32_index(np,
"syscon-chipselects",
1, &qspi->ctrl_reg);
if (ret) {
dev_err(&pdev->dev,
"couldn't get ctrl_mod reg index\n");
return ret;
goto free_master;
}
}
@ -742,6 +746,7 @@ no_dma:
if (!ret)
return 0;
pm_runtime_disable(&pdev->dev);
free_master:
spi_master_put(master);
return ret;