linux-kernel - [PATCH -next v2 3/3] cacheinfo: Remove unused check in init_cache

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Date:   Tue, 24 Jan 2023 16:40:48 +0100
From:   Pierre Gondois <pierre.gondois@....com>
To:     linux-kernel@...r.kernel.org
Cc:     Geert Uytterhoeven <geert@...ux-m68k.org>,
        Conor Dooley <conor.dooley@...rochip.com>,
        Dan Carpenter <error27@...il.com>,
        Pierre Gondois <pierre.gondois@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Sudeep Holla <sudeep.holla@....com>,
        Akihiko Odaki <akihiko.odaki@...nix.com>,
        Palmer Dabbelt <palmer@...osinc.com>,
        Gavin Shan <gshan@...hat.com>,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH -next v2 3/3] cacheinfo: Remove unused check in init_cache_level()

commit e75d18cecbb3 ("arm64: cacheinfo: Fix incorrect assignment
of signed error value to unsigned fw_level")
checks the fw_level value in init_cache_level() in case the value is
negative.
Remove this check as the error code is not returned through
fw_level anymore, and reset fw_level if acpi_get_cache_info()
failed. This allows to try fetching the cache information from
clidr_el1.

Signed-off-by: Pierre Gondois <pierre.gondois@....com>
---
 arch/arm64/kernel/cacheinfo.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/arm64/kernel/cacheinfo.c b/arch/arm64/kernel/cacheinfo.c
index bf348b8d321f..c307f69e9b55 100644
--- a/arch/arm64/kernel/cacheinfo.c
+++ b/arch/arm64/kernel/cacheinfo.c
@@ -62,9 +62,6 @@ int init_cache_level(unsigned int cpu)
 			fw_level = 0;
 	}
 
-	if (fw_level < 0)
-		return fw_level;
-
 	if (level < fw_level) {
 		/*
 		 * some external caches not specified in CLIDR_EL1
-- 
2.25.1