[PATCH] x86/module: remove unnecessary check in module_finalize()

Dan Carpenter posted 1 patch 10 months ago
arch/x86/kernel/module.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
[PATCH] x86/module: remove unnecessary check in module_finalize()
Posted by Dan Carpenter 10 months ago
The "calls" pointer can no longer be NULL after commit ab9fea59487d
("x86/alternative: Simplify callthunk patching") was merged.  Delete
this unnecessary check.

Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
---
 arch/x86/kernel/module.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c
index cb9d295e67cb..615f74c4bd6c 100644
--- a/arch/x86/kernel/module.c
+++ b/arch/x86/kernel/module.c
@@ -278,10 +278,8 @@ int module_finalize(const Elf_Ehdr *hdr,
 	if (calls) {
 		struct callthunk_sites cs = {};
 
-		if (calls) {
-			cs.call_start = (void *)calls->sh_addr;
-			cs.call_end = (void *)calls->sh_addr + calls->sh_size;
-		}
+		cs.call_start = (void *)calls->sh_addr;
+		cs.call_end = (void *)calls->sh_addr + calls->sh_size;
 
 		callthunks_patch_module_calls(&cs, me);
 	}
-- 
2.47.2
Re: [PATCH] x86/module: remove unnecessary check in module_finalize()
Posted by Song Liu 10 months ago
On Wed, Feb 19, 2025 at 5:48 AM Dan Carpenter <dan.carpenter@linaro.org> wrote:
>
> The "calls" pointer can no longer be NULL after commit ab9fea59487d
> ("x86/alternative: Simplify callthunk patching") was merged.  Delete
> this unnecessary check.
>
> Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>

Acked-by: Song Liu <song@kernel.org>

> ---
>  arch/x86/kernel/module.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c
> index cb9d295e67cb..615f74c4bd6c 100644
> --- a/arch/x86/kernel/module.c
> +++ b/arch/x86/kernel/module.c
> @@ -278,10 +278,8 @@ int module_finalize(const Elf_Ehdr *hdr,
>         if (calls) {
>                 struct callthunk_sites cs = {};
>
> -               if (calls) {
> -                       cs.call_start = (void *)calls->sh_addr;
> -                       cs.call_end = (void *)calls->sh_addr + calls->sh_size;
> -               }
> +               cs.call_start = (void *)calls->sh_addr;
> +               cs.call_end = (void *)calls->sh_addr + calls->sh_size;
>
>                 callthunks_patch_module_calls(&cs, me);
>         }
> --
> 2.47.2
>
[tip: x86/core] x86/module: Remove unnecessary check in module_finalize()
Posted by tip-bot2 for Dan Carpenter 10 months ago
The following commit has been merged into the x86/core branch of tip:

Commit-ID:     06dd759b68eea200e488cafbcfd382208a940777
Gitweb:        https://git.kernel.org/tip/06dd759b68eea200e488cafbcfd382208a940777
Author:        Dan Carpenter <dan.carpenter@linaro.org>
AuthorDate:    Wed, 19 Feb 2025 16:48:49 +03:00
Committer:     Ingo Molnar <mingo@kernel.org>
CommitterDate: Fri, 21 Feb 2025 14:27:42 +01:00

x86/module: Remove unnecessary check in module_finalize()

The "calls" pointer can no longer be NULL after the following
commit:

   ab9fea59487d ("x86/alternative: Simplify callthunk patching")

Delete this unnecessary check.

Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/fcbb2f57-0714-4139-b441-8817365c16a1@stanley.mountain
---
 arch/x86/kernel/module.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c
index cb9d295..615f74c 100644
--- a/arch/x86/kernel/module.c
+++ b/arch/x86/kernel/module.c
@@ -278,10 +278,8 @@ int module_finalize(const Elf_Ehdr *hdr,
 	if (calls) {
 		struct callthunk_sites cs = {};
 
-		if (calls) {
-			cs.call_start = (void *)calls->sh_addr;
-			cs.call_end = (void *)calls->sh_addr + calls->sh_size;
-		}
+		cs.call_start = (void *)calls->sh_addr;
+		cs.call_end = (void *)calls->sh_addr + calls->sh_size;
 
 		callthunks_patch_module_calls(&cs, me);
 	}