From 1cb394e644a000aa6dbe92d1278c712ddc5bbcf0 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Uwe=20Kleine-K=C3=B6nig?= <u.kleine-koenig@pengutronix.de>
Date: Tue, 9 Apr 2024 18:50:43 +0200
Subject: [PATCH] gpu: host1x: mipi: Benefit from devm_clk_get_prepared()
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When using devm_clk_get_prepared() instead of devm_clk_get() the clock
is already returned prepared. So probe doesn't need to call
clk_prepare() and at remove time the call to clk_unprepare() can be
dropped. The latter makes the remove callback empty, so it can be
dropped, too.
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20240409165043.105137-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
drivers/gpu/host1x/mipi.c | 17 +----------------
1 file changed, 1 insertion(+), 16 deletions(-)
diff --git a/drivers/gpu/host1x/mipi.c b/drivers/gpu/host1x/mipi.c
index 4dcec535ec21c..e51b43dd15a31 100644
--- a/drivers/gpu/host1x/mipi.c
+++ b/drivers/gpu/host1x/mipi.c
@@ -501,7 +501,6 @@ static int tegra_mipi_probe(struct platform_device *pdev)
{
const struct of_device_id *match;
struct tegra_mipi *mipi;
- int err;
match = of_match_node(tegra_mipi_of_match, pdev->dev.of_node);
if (!match)
@@ -520,35 +519,21 @@ static int tegra_mipi_probe(struct platform_device *pdev)
mutex_init(&mipi->lock);
- mipi->clk = devm_clk_get(&pdev->dev, NULL);
+ mipi->clk = devm_clk_get_prepared(&pdev->dev, NULL);
if (IS_ERR(mipi->clk)) {
dev_err(&pdev->dev, "failed to get clock\n");
return PTR_ERR(mipi->clk);
}
- err = clk_prepare(mipi->clk);
- if (err < 0)
- return err;
-
platform_set_drvdata(pdev, mipi);
return 0;
}
-static int tegra_mipi_remove(struct platform_device *pdev)
-{
- struct tegra_mipi *mipi = platform_get_drvdata(pdev);
-
- clk_unprepare(mipi->clk);
-
- return 0;
-}
-
struct platform_driver tegra_mipi_driver = {
.driver = {
.name = "tegra-mipi",
.of_match_table = tegra_mipi_of_match,
},
.probe = tegra_mipi_probe,
- .remove = tegra_mipi_remove,
};
--
2.50.1