From 874c5b601856adbfda10846b9770a6c66c41e229 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Sun, 25 Aug 2024 20:05:22 +0200 Subject: [PATCH 1/4] soc: versatile: integrator: fix OF node leak in probe() error path Driver is leaking OF node reference obtained from of_find_matching_node(). Fixes: f956a785a282 ("soc: move SoC driver for the ARM Integrator") Cc: stable@vger.kernel.org Signed-off-by: Krzysztof Kozlowski Link: https://lore.kernel.org/20240825-soc-dev-fixes-v1-1-ff4b35abed83@linaro.org Signed-off-by: Linus Walleij --- drivers/soc/versatile/soc-integrator.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/soc/versatile/soc-integrator.c b/drivers/soc/versatile/soc-integrator.c index bab4ad87aa75..d5099a3386b4 100644 --- a/drivers/soc/versatile/soc-integrator.c +++ b/drivers/soc/versatile/soc-integrator.c @@ -113,6 +113,7 @@ static int __init integrator_soc_init(void) return -ENODEV; syscon_regmap = syscon_node_to_regmap(np); + of_node_put(np); if (IS_ERR(syscon_regmap)) return PTR_ERR(syscon_regmap); From 1c4f26a41f9d052f334f6ae629e01f598ed93508 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Sun, 25 Aug 2024 20:05:23 +0200 Subject: [PATCH 2/4] soc: versatile: realview: fix memory leak during device remove If device is unbound, the memory allocated for soc_dev_attr should be freed to prevent leaks. Signed-off-by: Krzysztof Kozlowski Link: https://lore.kernel.org/20240825-soc-dev-fixes-v1-2-ff4b35abed83@linaro.org Signed-off-by: Linus Walleij --- drivers/soc/versatile/soc-realview.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/soc/versatile/soc-realview.c b/drivers/soc/versatile/soc-realview.c index c6876d232d8f..d304ee69287a 100644 --- a/drivers/soc/versatile/soc-realview.c +++ b/drivers/soc/versatile/soc-realview.c @@ -93,7 +93,7 @@ static int realview_soc_probe(struct platform_device *pdev) if (IS_ERR(syscon_regmap)) return PTR_ERR(syscon_regmap); - soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); + soc_dev_attr = devm_kzalloc(&pdev->dev, sizeof(*soc_dev_attr), GFP_KERNEL); if (!soc_dev_attr) return -ENOMEM; @@ -106,10 +106,9 @@ static int realview_soc_probe(struct platform_device *pdev) soc_dev_attr->family = "Versatile"; soc_dev_attr->custom_attr_group = realview_groups[0]; soc_dev = soc_device_register(soc_dev_attr); - if (IS_ERR(soc_dev)) { - kfree(soc_dev_attr); + if (IS_ERR(soc_dev)) return -ENODEV; - } + ret = regmap_read(syscon_regmap, REALVIEW_SYS_ID_OFFSET, &realview_coreid); if (ret) From c774f2564c0086c23f5269fd4691f233756bf075 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Sun, 25 Aug 2024 20:05:24 +0200 Subject: [PATCH 3/4] soc: versatile: realview: fix soc_dev leak during device remove If device is unbound, the soc_dev should be unregistered to prevent memory leak. Fixes: a2974c9c1f83 ("soc: add driver for the ARM RealView") Cc: stable@vger.kernel.org Signed-off-by: Krzysztof Kozlowski Link: https://lore.kernel.org/20240825-soc-dev-fixes-v1-3-ff4b35abed83@linaro.org Signed-off-by: Linus Walleij --- drivers/soc/versatile/soc-realview.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/soc/versatile/soc-realview.c b/drivers/soc/versatile/soc-realview.c index d304ee69287a..cf91abe07d38 100644 --- a/drivers/soc/versatile/soc-realview.c +++ b/drivers/soc/versatile/soc-realview.c @@ -4,6 +4,7 @@ * * Author: Linus Walleij */ +#include #include #include #include @@ -81,6 +82,13 @@ static struct attribute *realview_attrs[] = { ATTRIBUTE_GROUPS(realview); +static void realview_soc_socdev_release(void *data) +{ + struct soc_device *soc_dev = data; + + soc_device_unregister(soc_dev); +} + static int realview_soc_probe(struct platform_device *pdev) { struct regmap *syscon_regmap; @@ -109,6 +117,11 @@ static int realview_soc_probe(struct platform_device *pdev) if (IS_ERR(soc_dev)) return -ENODEV; + ret = devm_add_action_or_reset(&pdev->dev, realview_soc_socdev_release, + soc_dev); + if (ret) + return ret; + ret = regmap_read(syscon_regmap, REALVIEW_SYS_ID_OFFSET, &realview_coreid); if (ret) From 2f05726171f8d03eef58bc26b49e4994a66c0c5f Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Sun, 25 Aug 2024 20:05:25 +0200 Subject: [PATCH 4/4] soc: versatile: enable compile testing Enable compile testing for broader build coverage. None of the drivers use anything from "asm", so code should build everywhere. CONFIG_PLAT_VERSATILE is being selected by driver dependencies (CONFIG_ARCH_INTEGRATOR and CONFIG_ARCH_REALVIEW), so directory can be always added to Makefile targets without impacting other configurations. Signed-off-by: Krzysztof Kozlowski Link: https://lore.kernel.org/20240825-soc-dev-fixes-v1-4-ff4b35abed83@linaro.org Signed-off-by: Linus Walleij --- drivers/soc/Makefile | 2 +- drivers/soc/versatile/Kconfig | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/soc/Makefile b/drivers/soc/Makefile index fb2bd31387d0..56f476a12847 100644 --- a/drivers/soc/Makefile +++ b/drivers/soc/Makefile @@ -32,5 +32,5 @@ obj-y += sunxi/ obj-$(CONFIG_ARCH_TEGRA) += tegra/ obj-y += ti/ obj-$(CONFIG_ARCH_U8500) += ux500/ -obj-$(CONFIG_PLAT_VERSATILE) += versatile/ +obj-y += versatile/ obj-y += xilinx/ diff --git a/drivers/soc/versatile/Kconfig b/drivers/soc/versatile/Kconfig index c3792c0a84ac..7bbf54a8d879 100644 --- a/drivers/soc/versatile/Kconfig +++ b/drivers/soc/versatile/Kconfig @@ -4,7 +4,7 @@ # config SOC_INTEGRATOR_CM bool "SoC bus device for the ARM Integrator platform core modules" - depends on ARCH_INTEGRATOR + depends on ARCH_INTEGRATOR || COMPILE_TEST select SOC_BUS help Include support for the SoC bus on the ARM Integrator platform @@ -13,7 +13,7 @@ config SOC_INTEGRATOR_CM config SOC_REALVIEW bool "SoC bus device for the ARM RealView platforms" - depends on ARCH_REALVIEW + depends on ARCH_REALVIEW || COMPILE_TEST select SOC_BUS help Include support for the SoC bus on the ARM RealView platforms