From: Simon Schwartz kern.simon@theschwartz.xyz
[ Upstream commit 39cc539f90d035a293240c9443af50be55ee81b8 ]
num_resources in the platform_device struct is declared as a u32. The for loops that iterate over num_resources use an int as the counter, which can cause infinite loops on architectures with smaller ints. Change the loop counters to u32.
Signed-off-by: Simon Schwartz kern.simon@theschwartz.xyz Link: https://lore.kernel.org/r/2201ce63a2a171ffd2ed14e867875316efcf71db.camel@the... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/base/platform.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/base/platform.c b/drivers/base/platform.c index e9be1f5..1d3a50a 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -27,6 +27,7 @@ #include <linux/limits.h> #include <linux/property.h> #include <linux/kmemleak.h> +#include <linux/types.h>
#include "base.h" #include "power/power.h" @@ -67,7 +68,7 @@ void __weak arch_setup_pdev_archdata(struct platform_device *pdev) struct resource *platform_get_resource(struct platform_device *dev, unsigned int type, unsigned int num) { - int i; + u32 i;
for (i = 0; i < dev->num_resources; i++) { struct resource *r = &dev->resource[i]; @@ -162,7 +163,7 @@ struct resource *platform_get_resource_byname(struct platform_device *dev, unsigned int type, const char *name) { - int i; + u32 i;
for (i = 0; i < dev->num_resources; i++) { struct resource *r = &dev->resource[i]; @@ -359,7 +360,8 @@ int platform_device_add_properties(struct platform_device *pdev, */ int platform_device_add(struct platform_device *pdev) { - int i, ret; + u32 i; + int ret;
if (!pdev) return -EINVAL; @@ -446,7 +448,7 @@ int platform_device_add(struct platform_device *pdev) */ void platform_device_del(struct platform_device *pdev) { - int i; + u32 i;
if (pdev) { device_remove_properties(&pdev->dev);