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spi: bcm-qspi: Handle clock probe deferral 

The clock provider may not be ready by the time spi-bcm-qspi gets
probed, handle probe deferral using devm_clk_get_optional().

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20200420190853.45614-2-kdasu.kdev@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
alistair/sunxi64-5.8
Florian Fainelli 2020-04-20 15:08:45 -04:00 committed by Mark Brown
parent 4df3bea7f9
commit 0392727c26
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 5 additions and 7 deletions
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12
drivers/spi/spi-bcm-qspi.c
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@ -1227,6 +1227,11 @@ int bcm_qspi_probe(struct platform_device *pdev,
}
qspi = spi_master_get_devdata(master);
qspi->clk = devm_clk_get_optional(&pdev->dev, NULL);
if (IS_ERR(qspi->clk))
return PTR_ERR(qspi->clk);
qspi->pdev = pdev;
qspi->trans_pos.trans = NULL;
qspi->trans_pos.byte = 0;
@ -1340,13 +1345,6 @@ int bcm_qspi_probe(struct platform_device *pdev,
qspi->soc_intc = NULL;
}
qspi->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(qspi->clk)) {
dev_warn(dev, "unable to get clock\n");
ret = PTR_ERR(qspi->clk);
goto qspi_probe_err;
}
ret = clk_prepare_enable(qspi->clk);
if (ret) {
dev_err(dev, "failed to prepare clock\n");