diff options
authorRakib Mullick <>2009-09-30 16:09:55 -0700
committerLen Brown <>2009-10-03 01:03:11 -0400
commit01674da6f587a3f3940eedf2c1e97d51c35b994e (patch)
parent0efe5e32c8729ef44b00d9a7203e4c99a6378b27 (diff)
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 <>
1 files 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)
@@ -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;