From: Sascha Hauer Date: Tue, 4 Jul 2023 09:32:17 +0000 (+0200) Subject: PM / devfreq: rockchip-dfi: Make pmu regmap mandatory X-Git-Tag: v5.15.139~206 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=80986257d2cd135bee629152c3bfa3a7a23ac898;p=thirdparty%2Fkernel%2Fstable.git PM / devfreq: rockchip-dfi: Make pmu regmap mandatory [ Upstream commit 1e0731c05c985deb68a97fa44c1adcd3305dda90 ] As a matter of fact the regmap_pmu already is mandatory because it is used unconditionally in the driver. Bail out gracefully in probe() rather than crashing later. Link: https://lore.kernel.org/lkml/20230704093242.583575-2-s.hauer@pengutronix.de/ Fixes: b9d1262bca0af ("PM / devfreq: event: support rockchip dfi controller") Reviewed-by: Sebastian Reichel Signed-off-by: Sascha Hauer Signed-off-by: Chanwoo Choi Signed-off-by: Sasha Levin --- diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c index 9a88faaf8b27f..4dafdf23197b9 100644 --- a/drivers/devfreq/event/rockchip-dfi.c +++ b/drivers/devfreq/event/rockchip-dfi.c @@ -194,14 +194,15 @@ static int rockchip_dfi_probe(struct platform_device *pdev) return PTR_ERR(data->clk); } - /* try to find the optional reference to the pmu syscon */ node = of_parse_phandle(np, "rockchip,pmu", 0); - if (node) { - data->regmap_pmu = syscon_node_to_regmap(node); - of_node_put(node); - if (IS_ERR(data->regmap_pmu)) - return PTR_ERR(data->regmap_pmu); - } + if (!node) + return dev_err_probe(&pdev->dev, -ENODEV, "Can't find pmu_grf registers\n"); + + data->regmap_pmu = syscon_node_to_regmap(node); + of_node_put(node); + if (IS_ERR(data->regmap_pmu)) + return PTR_ERR(data->regmap_pmu); + data->dev = dev; desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);