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| author | Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> | 2021-11-17 14:50:58 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-27 13:04:06 +0300 |
| commit | 02beeed3928f7eabbeb7f1a49c6eaa6f2a215218 (patch) | |
| tree | edac0d9efe3cd6513ae34afb95c640f23fa1ad53 /drivers/clk | |
| parent | a0b4447677ddf293ba2d85960cbfc2cfff75c283 (diff) | |
| download | linux-02beeed3928f7eabbeb7f1a49c6eaa6f2a215218.tar.xz | |
clk: renesas: rzg2l: Check return value of pm_genpd_init()
[ Upstream commit 27527a3d3b162e4512798c058c0e8a216c721187 ]
Make sure we check the return value of pm_genpd_init() which might fail.
Also add a devres action to remove the power-domain in-case the probe
callback fails further down in the code flow.
Fixes: ef3c613ccd68a ("clk: renesas: Add CPG core wrapper for RZ/G2L SoC")
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20211117115101.28281-2-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/clk')
| -rw-r--r-- | drivers/clk/renesas/rzg2l-cpg.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c index 761922ea5db7..61e7c0c4f379 100644 --- a/drivers/clk/renesas/rzg2l-cpg.c +++ b/drivers/clk/renesas/rzg2l-cpg.c @@ -638,10 +638,16 @@ static void rzg2l_cpg_detach_dev(struct generic_pm_domain *unused, struct device pm_clk_destroy(dev); } +static void rzg2l_cpg_genpd_remove(void *data) +{ + pm_genpd_remove(data); +} + static int __init rzg2l_cpg_add_clk_domain(struct device *dev) { struct device_node *np = dev->of_node; struct generic_pm_domain *genpd; + int ret; genpd = devm_kzalloc(dev, sizeof(*genpd), GFP_KERNEL); if (!genpd) @@ -652,7 +658,13 @@ static int __init rzg2l_cpg_add_clk_domain(struct device *dev) GENPD_FLAG_ACTIVE_WAKEUP; genpd->attach_dev = rzg2l_cpg_attach_dev; genpd->detach_dev = rzg2l_cpg_detach_dev; - pm_genpd_init(genpd, &pm_domain_always_on_gov, false); + ret = pm_genpd_init(genpd, &pm_domain_always_on_gov, false); + if (ret) + return ret; + + ret = devm_add_action_or_reset(dev, rzg2l_cpg_genpd_remove, genpd); + if (ret) + return ret; of_genpd_add_provider_simple(np, genpd); return 0; |