From: "wenyi,xie" <xiewenyi2@huawei.com>
To: <devel@edk2.groups.io>, <jian.j.wang@intel.com>,
<hao.a.wu@intel.com>, <dandan.bi@intel.com>,
<eric.dong@intel.com>
Cc: <songdongkuang@huawei.com>, <xiewenyi2@huawei.com>
Subject: [PATCH EDK2 v1 1/1] MdeModulePkg/FileExplorerLib: remove redundant null pointer check
Date: Wed, 25 Nov 2020 09:52:51 +0800 [thread overview]
Message-ID: <1606269171-21979-2-git-send-email-xiewenyi2@huawei.com> (raw)
In-Reply-To: <1606269171-21979-1-git-send-email-xiewenyi2@huawei.com>
Since Info is a pointer of struct EFI_FILE_SYSTEM_VOLUME_LABEL,
and this struct has only one member VolumeLabel which is char
array. So Info and Info->VolumeLabel are point to the same
address, and if Info != NULL, Info->VolumeLabel == NULL is
always false, it's no necessary to do null pointer check again.
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Dandan Bi <dandan.bi@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Signed-off-by: Wenyi Xie <xiewenyi2@huawei.com>
---
MdeModulePkg/Library/FileExplorerLib/FileExplorer.c | 10 +++-------
1 file changed, 3 insertions(+), 7 deletions(-)
diff --git a/MdeModulePkg/Library/FileExplorerLib/FileExplorer.c b/MdeModulePkg/Library/FileExplorerLib/FileExplorer.c
index 58e49102593c..13a214b06af9 100644
--- a/MdeModulePkg/Library/FileExplorerLib/FileExplorer.c
+++ b/MdeModulePkg/Library/FileExplorerLib/FileExplorer.c
@@ -821,13 +821,9 @@ LibFindFileSystem (
if (Info == NULL) {
VolumeLabel = L"NO FILE SYSTEM INFO";
} else {
- if (Info->VolumeLabel == NULL) {
- VolumeLabel = L"NULL VOLUME LABEL";
- } else {
- VolumeLabel = Info->VolumeLabel;
- if (*VolumeLabel == 0x0000) {
- VolumeLabel = L"NO VOLUME LABEL";
- }
+ VolumeLabel = Info->VolumeLabel;
+ if (*VolumeLabel == 0x0000) {
+ VolumeLabel = L"NO VOLUME LABEL";
}
}
MenuEntry->DisplayString = AllocateZeroPool (MAX_CHAR);
--
2.20.1.windows.1
next prev parent reply other threads:[~2020-11-25 1:54 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-25 1:52 [PATCH EDK2 v1 0/1] MdeModulePkg/FileExplorerLib: remove redundant null pointer check wenyi,xie
2020-11-25 1:52 ` wenyi,xie [this message]
2020-11-25 3:26 ` 回复: [edk2-devel] [PATCH EDK2 v1 1/1] " gaoliming
2020-11-25 15:01 ` Laszlo Ersek
2020-11-26 1:33 ` wenyi,xie
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