From: Wen Yang <wen.yang99@zte.com.cn>
To: Kishon Vijay Abraham I <kishon@ti.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Bjorn Helgaas <bhelgaas@google.com>
Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
zhong.weidong@zte.com.cn, Wen Yang <wen.yang99@zte.com.cn>,
Gustavo Pimentel <gustavo.pimentel@synopsys.com>,
Niklas Cassel <niklas.cassel@axis.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Cyrille Pitchen <cyrille.pitchen@free-electrons.com>
Subject: [PATCH v2] PCI: endpoint: functions: Use kmemdup instead of duplicating its function
Date: Thu, 6 Dec 2018 20:52:25 +0800 [thread overview]
Message-ID: <20181206125225.9497-1-wen.yang99@zte.com.cn> (raw)
kmemdup has implemented the function that kmalloc() + memcpy().
We prefer to kmemdup rather than code opened implementation.
This issue was detected with the help of coccinelle.
Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
CC: Kishon Vijay Abraham I <kishon@ti.com>
CC: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
CC: Bjorn Helgaas <bhelgaas@google.com>
CC: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
CC: Niklas Cassel <niklas.cassel@axis.com>
CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CC: Cyrille Pitchen <cyrille.pitchen@free-electrons.com>
CC: linux-pci@vger.kernel.org (open list:PCI ENDPOINT SUBSYSTEM)
CC: linux-kernel@vger.kernel.org (open list)
---
drivers/pci/endpoint/functions/pci-epf-test.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c
index 3e86fa3c7da3..8df6c019f8a2 100644
--- a/drivers/pci/endpoint/functions/pci-epf-test.c
+++ b/drivers/pci/endpoint/functions/pci-epf-test.c
@@ -169,14 +169,12 @@ static int pci_epf_test_read(struct pci_epf_test *epf_test)
goto err_addr;
}
- buf = kzalloc(reg->size, GFP_KERNEL);
+ buf = kmemdup(src_addr, reg->size, GFP_KERNEL);
if (!buf) {
ret = -ENOMEM;
goto err_map_addr;
}
- memcpy(buf, src_addr, reg->size);
-
crc32 = crc32_le(~0, buf, reg->size);
if (crc32 != reg->checksum)
ret = -EIO;
--
2.19.1
next reply other threads:[~2018-12-06 12:52 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-06 12:52 Wen Yang [this message]
2019-02-08 12:20 ` [PATCH v2] PCI: endpoint: functions: Use kmemdup instead of duplicating its function Lorenzo Pieralisi
2019-02-11 5:48 ` Kishon Vijay Abraham I
2019-02-11 9:15 ` Gustavo Pimentel
2019-02-11 12:37 ` Kishon Vijay Abraham I
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