From: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
To: Jarkko Sakkinen <jarkko@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Andrew Morton <akpm@linux-foundation.org>,
Shuah Khan <shuah@kernel.org>,
haitao.huang@intel.com, Kai Huang <kai.huang@intel.com>,
x86@kernel.org, linux-sgx@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linux-kselftest@vger.kernel.org,
Jia Zhang <zhang.jia@linux.alibaba.com>
Cc: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Subject: [PATCH] x86/sgx: Remove redundant if conditions in sgx_encl_create
Date: Mon, 18 Jan 2021 21:33:58 +0800 [thread overview]
Message-ID: <20210118133358.99311-1-tianjia.zhang@linux.alibaba.com> (raw)
In this scenario, there is no case where va_page is NULL, and
the error has been checked. The if condition statement here is
redundant, so remove the condition detection.
Reported-by: Jia Zhang <zhang.jia@linux.alibaba.com>
Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
---
arch/x86/kernel/cpu/sgx/ioctl.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/arch/x86/kernel/cpu/sgx/ioctl.c b/arch/x86/kernel/cpu/sgx/ioctl.c
index 90a5caf76939..f45957c05f69 100644
--- a/arch/x86/kernel/cpu/sgx/ioctl.c
+++ b/arch/x86/kernel/cpu/sgx/ioctl.c
@@ -66,9 +66,8 @@ static int sgx_encl_create(struct sgx_encl *encl, struct sgx_secs *secs)
va_page = sgx_encl_grow(encl);
if (IS_ERR(va_page))
return PTR_ERR(va_page);
- else if (va_page)
- list_add(&va_page->list, &encl->va_pages);
- /* else the tail page of the VA page list had free slots. */
+
+ list_add(&va_page->list, &encl->va_pages);
/* The extra page goes to SECS. */
encl_size = secs->size + PAGE_SIZE;
--
2.19.1.3.ge56e4f7
next reply other threads:[~2021-01-18 13:51 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-18 13:33 Tianjia Zhang [this message]
2021-01-19 20:29 ` [PATCH] x86/sgx: Remove redundant if conditions in sgx_encl_create Sean Christopherson
2021-01-20 14:39 ` Jarkko Sakkinen
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