From: Changcheng Deng <deng.changcheng@zte.com.cn>

Fix the following coccicheck warning:
./arch/powerpc/platforms/cell/axon_msi.c: 456: 0-23: WARNING: fops_msic
should be defined with DEFINE_DEBUGFS_ATTRIBUTE

Use DEFINE_DEBUGFS_ATTRIBUTE rather than DEFINE_SIMPLE_ATTRIBUTE for
debugfs files.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Changcheng Deng <deng.changcheng@zte.com.cn>
---
 arch/powerpc/platforms/cell/axon_msi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/platforms/cell/axon_msi.c b/arch/powerpc/platforms/cell/axon_msi.c
index 354a58c1e6f2..47bb0ae8d6c9 100644
--- a/arch/powerpc/platforms/cell/axon_msi.c
+++ b/arch/powerpc/platforms/cell/axon_msi.c
@@ -453,7 +453,7 @@ static int msic_get(void *data, u64 *val)
 	return 0;
 }
 
-DEFINE_SIMPLE_ATTRIBUTE(fops_msic, msic_get, msic_set, "%llu\n");
+DEFINE_DEBUGFS_ATTRIBUTE(fops_msic, msic_get, msic_set, "%llu\n");
 
 void axon_msi_debug_setup(struct device_node *dn, struct axon_msic *msic)
 {
-- 
2.25.1

cgel.zte@gmail.com writes:
> From: Changcheng Deng <deng.changcheng@zte.com.cn>
>
> Fix the following coccicheck warning:
> ./arch/powerpc/platforms/cell/axon_msi.c: 456: 0-23: WARNING: fops_msic
> should be defined with DEFINE_DEBUGFS_ATTRIBUTE
>
> Use DEFINE_DEBUGFS_ATTRIBUTE rather than DEFINE_SIMPLE_ATTRIBUTE for
> debugfs files.

But it also says:

  //# Rationale: DEFINE_SIMPLE_ATTRIBUTE + debugfs_create_file()
  //# imposes some significant overhead as compared to
  //# DEFINE_DEBUGFS_ATTRIBUTE + debugfs_create_file_unsafe().

Your patch doesn't change it to use debugfs_create_file_unsafe(),
shouldn't it?

cheers

> diff --git a/arch/powerpc/platforms/cell/axon_msi.c b/arch/powerpc/platforms/cell/axon_msi.c
> index 354a58c1e6f2..47bb0ae8d6c9 100644
> --- a/arch/powerpc/platforms/cell/axon_msi.c
> +++ b/arch/powerpc/platforms/cell/axon_msi.c
> @@ -453,7 +453,7 @@ static int msic_get(void *data, u64 *val)
>  	return 0;
>  }
>  
> -DEFINE_SIMPLE_ATTRIBUTE(fops_msic, msic_get, msic_set, "%llu\n");
> +DEFINE_DEBUGFS_ATTRIBUTE(fops_msic, msic_get, msic_set, "%llu\n");
>  
>  void axon_msi_debug_setup(struct device_node *dn, struct axon_msic *msic)
>  {
> -- 
> 2.25.1

From: Changcheng Deng <deng.changcheng@zte.com.cn>

Fix the following coccicheck warning:
./arch/powerpc/platforms/cell/axon_msi.c: 456: 0-23: WARNING: fops_msic
should be defined with DEFINE_DEBUGFS_ATTRIBUTE

DEFINE_SIMPLE_ATTRIBUTE + debugfs_create_file()
imposes some significant overhead as compared to
DEFINE_DEBUGFS_ATTRIBUTE + debugfs_create_file_unsafe().

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Changcheng Deng <deng.changcheng@zte.com.cn>
---
 arch/powerpc/platforms/cell/axon_msi.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/platforms/cell/axon_msi.c b/arch/powerpc/platforms/cell/axon_msi.c
index 354a58c1e6f2..362c1efe4180 100644
--- a/arch/powerpc/platforms/cell/axon_msi.c
+++ b/arch/powerpc/platforms/cell/axon_msi.c
@@ -453,7 +453,7 @@ static int msic_get(void *data, u64 *val)
 	return 0;
 }
 
-DEFINE_SIMPLE_ATTRIBUTE(fops_msic, msic_get, msic_set, "%llu\n");
+DEFINE_DEBUGFS_ATTRIBUTE(fops_msic, msic_get, msic_set, "%llu\n");
 
 void axon_msi_debug_setup(struct device_node *dn, struct axon_msic *msic)
 {
@@ -474,6 +474,6 @@ void axon_msi_debug_setup(struct device_node *dn, struct axon_msic *msic)
 
 	snprintf(name, sizeof(name), "msic_%d", of_node_to_nid(dn));
 
-	debugfs_create_file(name, 0600, arch_debugfs_dir, msic, &fops_msic);
+	debugfs_create_file_unsafe(name, 0600, arch_debugfs_dir, msic, &fops_msic);
 }
 #endif /* DEBUG */
-- 
2.25.1