From: Ashutosh Naik <ashutosh.naik@gmail.com>
Date: Sun, 8 Jan 2006 09:04:37 +0000 (-0800)
Subject: [PATCH] kernel/module.c: remove redundant spinlock in resolve_symbol()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=eb46996f90a0826921f1a0d81535537a9c7f91b0;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

[PATCH] kernel/module.c: remove redundant spinlock in resolve_symbol()

Remove the redundant spinlock in the function resolve_symbol() as we are
not altering the module list, and we already hold the semaphore.

Signed-off-by: Ashutosh Naik <ashutosh.naik@gmail.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/kernel/module.c b/kernel/module.c
index f368812ac0e8..e4276046a1b6 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -958,7 +958,6 @@ static unsigned long resolve_symbol(Elf_Shdr *sechdrs,
 	unsigned long ret;
 	const unsigned long *crc;
 
-	spin_lock_irq(&modlist_lock);
 	ret = __find_symbol(name, &owner, &crc, mod->license_gplok);
 	if (ret) {
 		/* use_module can fail due to OOM, or module unloading */
@@ -966,7 +965,6 @@ static unsigned long resolve_symbol(Elf_Shdr *sechdrs,
 		    !use_module(mod, owner))
 			ret = 0;
 	}
-	spin_unlock_irq(&modlist_lock);
 	return ret;
 }