From 01674da6f587a3f3940eedf2c1e97d51c35b994e Mon Sep 17 00:00:00 2001 From: Rakib Mullick Date: Wed, 30 Sep 2009 16:09:55 -0700 Subject: [PATCH] SFI: fix section mismatch warnings in sfi_core.c The function sfi_map_memory/sfi_unmap_memory uses early_ioremap/early_iounmap respectively, which refers to a __init function. And function sfi_check_table also refers to a __init function sfi_verify_table. Since the references are valid, so use __ref to get rid of the warnings. We were warned by the following warnings: LD vmlinux.o MODPOST vmlinux.o WARNING: vmlinux.o(.text+0xb6ba3a): Section mismatch in reference from the function sfi_map_memory() to the function .init.text:early_ioremap() The function sfi_map_memory() references the function __init early_ioremap(). This is often because sfi_map_memory lacks a __init annotation or the annotation of early_ioremap is wrong. WARNING: vmlinux.o(.text+0xb6bab6): Section mismatch in reference from the function sfi_unmap_memory() to the function .init.text:early_iounmap() The function sfi_unmap_memory() references the function __init early_iounmap(). This is often because sfi_unmap_memory lacks a __init annotation or the annotation of early_iounmap is wrong. WARNING: vmlinux.o(.text+0xb6be30): Section mismatch in reference from the function sfi_check_table() to the function .init.text:sfi_verify_table() The function sfi_check_table() references the function __init sfi_verify_table(). This is often because sfi_check_table lacks a __init annotation or the annotation of sfi_verify_table is wrong. Signed-off-by: Rakib Mullick Signed-off-by: Andrew Morton Signed-off-by: Len Brown --- drivers/sfi/sfi_core.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/drivers/sfi/sfi_core.c b/drivers/sfi/sfi_core.c index d3b49680047..251da2298b6 100644 --- a/drivers/sfi/sfi_core.c +++ b/drivers/sfi/sfi_core.c @@ -90,7 +90,11 @@ static struct sfi_table_simple *syst_va __read_mostly; */ static u32 sfi_use_ioremap __read_mostly; -static void __iomem *sfi_map_memory(u64 phys, u32 size) +/* + * sfi_un/map_memory calls early_ioremap/iounmap which is a __init function + * and introduces section mismatch. So use __ref to make it calm. + */ +static void __iomem * __ref sfi_map_memory(u64 phys, u32 size) { if (!phys || !size) return NULL; @@ -101,7 +105,7 @@ static void __iomem *sfi_map_memory(u64 phys, u32 size) return early_ioremap(phys, size); } -static void sfi_unmap_memory(void __iomem *virt, u32 size) +static void __ref sfi_unmap_memory(void __iomem *virt, u32 size) { if (!virt || !size) return; @@ -213,12 +217,17 @@ static int sfi_table_check_key(struct sfi_table_header *th, * the mapped virt address will be returned, and the virt space * will be released by call sfi_put_table() later * + * This two cases are from two different functions with two different + * sections and causes section mismatch warning. So use __ref to tell + * modpost not to make any noise. + * * Return value: * NULL: when can't find a table matching the key * ERR_PTR(error): error value * virt table address: when a matched table is found */ -struct sfi_table_header *sfi_check_table(u64 pa, struct sfi_table_key *key) +struct sfi_table_header * + __ref sfi_check_table(u64 pa, struct sfi_table_key *key) { struct sfi_table_header *th; void *ret = NULL;