[PATCH -next 01/11] mtd: spear_smi: Use helper function devm_clk_get_enabled()

Li Zetao
2023-08-17T02:45:58Z

After the commit 7ef9651e9792 ("clk: Provide new devm_clk helpers for
prepared and enabled clocks"), it can replace the pair of functions,
devm_clk_get() and clk_prepare_enable() with a single helper function
devm_clk_get_enabled(). Moreover, the driver will keeps a clock prepared
(or enabled) during the whole lifetime of the driver, it is unnecessary to
unprepare and disable clock explicitly when remove driver or in the error
handling path.

Signed-off-by: Li Zetao <lizetao1@huawei.com>
---
drivers/mtd/devices/spear_smi.c | 15 +++------------
1 file changed, 3 insertions(+), 12 deletions(-)

diff --git a/drivers/mtd/devices/spear_smi.c b/drivers/mtd/devices/spear_smi.c
index 93bca5225116..0a35e5236ae5 100644
--- a/drivers/mtd/devices/spear_smi.c
+++ b/drivers/mtd/devices/spear_smi.c
@@ -993,21 +993,17 @@ static int spear_smi_probe(struct platform_device *pdev)
dev->num_flashes = MAX_NUM_FLASH_CHIP;
}

- dev->clk = devm_clk_get(&pdev->dev, NULL);
+ dev->clk = devm_clk_get_enabled(&pdev->dev, NULL);
if (IS_ERR(dev->clk)) {
ret = PTR_ERR(dev->clk);
goto err;
}

- ret = clk_prepare_enable(dev->clk);
- if (ret)
- goto err;
-
ret = devm_request_irq(&pdev->dev, irq, spear_smi_int_handler, 0,
pdev->name, dev);
if (ret) {
dev_err(&dev->pdev->dev, "SMI IRQ allocation failed\n");
- goto err_irq;
+ goto err;
}

mutex_init(&dev->lock);
@@ -1020,14 +1016,11 @@ static int spear_smi_probe(struct platform_device *pdev)
ret = spear_smi_setup_banks(pdev, i, pdata->np[i]);
if (ret) {
dev_err(&dev->pdev->dev, "bank setup failed\n");
- goto err_irq;
+ goto err;
}
}

return 0;
-
-err_irq:
- clk_disable_unprepare(dev->clk);
err:
return ret;
}
@@ -1056,8 +1049,6 @@ static int spear_smi_remove(struct platform_device *pdev)
WARN_ON(mtd_device_unregister(&flash->mtd));
}

- clk_disable_unprepare(dev->clk);
-
return 0;
}

--
2.34.1