linux-kernel - [PATCH v2] binder: remove redundant variable page

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Message-ID: <20240116193235.184666-1-cmllamas@google.com>
Date: Tue, 16 Jan 2024 19:32:34 +0000
From: Carlos Llamas <cmllamas@...gle.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
	"Arve Hjønnevåg" <arve@...roid.com>, Todd Kjos <tkjos@...roid.com>, Martijn Coenen <maco@...roid.com>, 
	Joel Fernandes <joel@...lfernandes.org>, Christian Brauner <brauner@...nel.org>, 
	Carlos Llamas <cmllamas@...gle.com>, Suren Baghdasaryan <surenb@...gle.com>, 
	Nathan Chancellor <nathan@...nel.org>, Alice Ryhl <aliceryhl@...gle.com>
Cc: kernel-team@...roid.com, linux-kernel@...r.kernel.org, 
	Colin Ian King <colin.i.king@...el.com>, kernel test robot <lkp@...el.com>, 
	Nick Desaulniers <ndesaulniers@...gle.com>, Bill Wendling <morbo@...gle.com>, 
	Justin Stitt <justinstitt@...gle.com>
Subject: [PATCH v2] binder: remove redundant variable page_addr

From: Colin Ian King <colin.i.king@...el.com>

Variable page_addr is being assigned a value that is never read. The
variable is redundant and can be removed.

Cleans up clang scan build warning:
warning: Value stored to 'page_addr' is never read [deadcode.DeadStores]

Signed-off-by: Colin Ian King <colin.i.king@...el.com>
Fixes: 162c79731448 ("binder: avoid user addresses in debug logs")
Reported-by: kernel test robot <lkp@...el.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202312060851.cudv98wG-lkp@intel.com/
Acked-by: Carlos Llamas <cmllamas@...gle.com>
---

Notes:
    v2: added tags, used char-misc-next as base

 drivers/android/binder_alloc.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/android/binder_alloc.c b/drivers/android/binder_alloc.c
index a4a4dc87ba53..34d7a1494bc7 100644
--- a/drivers/android/binder_alloc.c
+++ b/drivers/android/binder_alloc.c
@@ -925,7 +925,6 @@ void binder_alloc_deferred_release(struct binder_alloc *alloc)
 		int i;
 
 		for (i = 0; i < alloc->buffer_size / PAGE_SIZE; i++) {
-			unsigned long page_addr;
 			bool on_lru;
 
 			if (!alloc->pages[i].page_ptr)
@@ -933,7 +932,6 @@ void binder_alloc_deferred_release(struct binder_alloc *alloc)
 
 			on_lru = list_lru_del(&binder_freelist,
 					      &alloc->pages[i].lru);
-			page_addr = alloc->buffer + i * PAGE_SIZE;
 			binder_alloc_debug(BINDER_DEBUG_BUFFER_ALLOC,
 				     "%s: %d: page %d %s\n",
 				     __func__, alloc->pid, i,

base-commit: 5850edccec30325707f953bc088497b3b9041231
-- 
2.43.0.275.g3460e3d667-goog