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ARM: imx: add missing iounmap()

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[ Upstream commit f9613aa07f16d6042e74208d1b40a6104d72964a ]

Commit e76bdfd740 ("ARM: imx: Added perf functionality to mmdc driver")
introduced imx_mmdc_remove(), the mmdc_base need be unmapped in it if
config PERF_EVENTS is enabled.

If imx_mmdc_perf_init() fails, the mmdc_base also need be unmapped.

Fixes: e76bdfd740 ("ARM: imx: Added perf functionality to mmdc driver")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yang Yingliang 2021-06-15 20:52:38 +08:00 committed by AuxXxilium
parent 3d5b659cae
commit 8b286e7562
1 changed files with 6 additions and 1 deletions
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7
arch/arm/mach-imx/mmdc.c
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@ -462,6 +462,7 @@ static int imx_mmdc_remove(struct platform_device *pdev)
cpuhp_state_remove_instance_nocalls(cpuhp_mmdc_state, &pmu_mmdc->node);
perf_pmu_unregister(&pmu_mmdc->pmu);
iounmap(pmu_mmdc->mmdc_base);
kfree(pmu_mmdc);
return 0;
}
@ -567,7 +568,11 @@ static int imx_mmdc_probe(struct platform_device *pdev)
val &= ~(1 << BP_MMDC_MAPSR_PSD);
writel_relaxed(val, reg);
return imx_mmdc_perf_init(pdev, mmdc_base);
err = imx_mmdc_perf_init(pdev, mmdc_base);
if (err)
iounmap(mmdc_base);
return err;
}
int imx_mmdc_get_ddr_type(void)