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spi: spi-altera-dfl: Fix an error handling path
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The spi_alloc_master() call is not undone in all error handling paths.
Moreover, there is no .remove function to release the allocated memory.

In order to fix both this issues, switch to devm_spi_alloc_master().

This allows further simplification of the probe.

Fixes: ba2fc16 ("spi: altera: Add DFL bus driver for Altera API Controller")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/0607bb59f4073f86abe5c585d35245aef0b045c6.1653805901.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Mark Brown <broonie@kernel.org>
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Christophe JAILLET authored and Mark Brown committed Jun 6, 2022
1 parent f2906aa commit 8e3ca32
Showing 1 changed file with 5 additions and 9 deletions.
14 changes: 5 additions & 9 deletions drivers/spi/spi-altera-dfl.c
Original file line number Diff line number Diff line change
Expand Up @@ -128,9 +128,9 @@ static int dfl_spi_altera_probe(struct dfl_device *dfl_dev)
struct spi_master *master;
struct altera_spi *hw;
void __iomem *base;
int err = -ENODEV;
int err;

master = spi_alloc_master(dev, sizeof(struct altera_spi));
master = devm_spi_alloc_master(dev, sizeof(struct altera_spi));
if (!master)
return -ENOMEM;

Expand Down Expand Up @@ -159,10 +159,9 @@ static int dfl_spi_altera_probe(struct dfl_device *dfl_dev)
altera_spi_init_master(master);

err = devm_spi_register_master(dev, master);
if (err) {
dev_err(dev, "%s failed to register spi master %d\n", __func__, err);
goto exit;
}
if (err)
return dev_err_probe(dev, err, "%s failed to register spi master\n",
__func__);

if (dfl_dev->revision == FME_FEATURE_REV_MAX10_SPI_N5010)
strscpy(board_info.modalias, "m10-n5010", SPI_NAME_SIZE);
Expand All @@ -179,9 +178,6 @@ static int dfl_spi_altera_probe(struct dfl_device *dfl_dev)
}

return 0;
exit:
spi_master_put(master);
return err;
}

static const struct dfl_device_id dfl_spi_altera_ids[] = {
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