Just add a simple macro that passes a NULL dev argument to dev_request_free_mem_region, and call request_mem_region in the function for that particular case. Signed-off-by: Christoph Hellwig <hch@xxxxxx> --- include/linux/ioport.h | 2 ++ kernel/resource.c | 5 ++++- 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/include/linux/ioport.h b/include/linux/ioport.h index 0dcc48cafa80..528ae6cbb1b4 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -297,6 +297,8 @@ static inline bool resource_overlaps(struct resource *r1, struct resource *r2) struct resource *devm_request_free_mem_region(struct device *dev, struct resource *base, unsigned long size, const char *name); +#define request_free_mem_region(base, size, name) \ + devm_request_free_mem_region(NULL, base, size, name) #endif /* __ASSEMBLY__ */ #endif /* _LINUX_IOPORT_H */ diff --git a/kernel/resource.c b/kernel/resource.c index 0ddc558586a7..3a826b3cc883 100644 --- a/kernel/resource.c +++ b/kernel/resource.c @@ -1671,7 +1671,10 @@ struct resource *devm_request_free_mem_region(struct device *dev, REGION_DISJOINT) continue; - res = devm_request_mem_region(dev, addr, size, name); + if (dev) + res = devm_request_mem_region(dev, addr, size, name); + else + res = request_mem_region(addr, size, name); if (!res) return ERR_PTR(-ENOMEM); res->desc = IORES_DESC_DEVICE_PRIVATE_MEMORY; -- 2.20.1
