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authorPrahlad V <prahlad.eee@gmail.com>2017-02-17 02:03:35 +0530
committerMark Brown <broonie@kernel.org>2017-02-17 11:24:51 +0000
commitcce59c225920309e03c2ea350ed6a0e233e33963 (patch)
tree17c48ac327b3f93ff06e18789ad894546250ad3e /drivers/spi
parentfafd67940774733fa97f4b09412aea6981b82e0a (diff)
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spi: ti-qspi: revise ti_qspi_probe() failure flow
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>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/spi-ti-qspi.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/spi/spi-ti-qspi.c b/drivers/spi/spi-ti-qspi.c
index ec6fb09e2e17..e784d0f64dc1 100644
--- a/drivers/spi/spi-ti-qspi.c
+++ b/drivers/spi/spi-ti-qspi.c
@@ -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;