spi: pic32: Use helper function devm_clk_get_enabled()

Since commit 7ef9651e ("clk: Provide new devm_clk helpers for prepared
and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be
replaced by devm_clk_get_enabled() when driver enables (and possibly
prepares) the clocks for the whole lifetime of the device. Moreover, it is
no longer necessary to unprepare and disable the clocks explicitly.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Li Zetao <lizetao1@huawei.com>
Link: https://lore.kernel.org/r/20230823133938.1359106-24-lizetao1@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-pic32.c

@@ -730,17 +730,13 @@ static int pic32_spi_hw_probe(struct platform_device *pdev,
 		return pic32s->tx_irq;
 
 	/* get clock */
-	pic32s->clk = devm_clk_get(&pdev->dev, "mck0");
+	pic32s->clk = devm_clk_get_enabled(&pdev->dev, "mck0");
 	if (IS_ERR(pic32s->clk)) {
 		dev_err(&pdev->dev, "clk not found\n");
 		ret = PTR_ERR(pic32s->clk);
 		goto err_unmap_mem;
 	}
 
-	ret = clk_prepare_enable(pic32s->clk);
-	if (ret)
-		goto err_unmap_mem;
-
 	pic32_spi_hw_init(pic32s);
 
 	return 0;
@@ -837,7 +833,6 @@ static int pic32_spi_probe(struct platform_device *pdev)
 
 err_bailout:
 	pic32_spi_dma_unprep(pic32s);
-	clk_disable_unprepare(pic32s->clk);
 err_host:
 	spi_controller_put(host);
 	return ret;
@@ -849,7 +844,6 @@ static void pic32_spi_remove(struct platform_device *pdev)
 
 	pic32s = platform_get_drvdata(pdev);
 	pic32_spi_disable(pic32s);
-	clk_disable_unprepare(pic32s->clk);
 	pic32_spi_dma_unprep(pic32s);
 }