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@xxxxxxxxxx>
CC: Bob Copeland <me@xxxxxxxxxxxxxxx>
CC: Kishon Vijay Abraham I <kishon@xxxxxx>
CC: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
CC: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
CC: Gustavo Pimentel <gustavo.pimentel@xxxxxxxxxxxx>
CC: Niklas Cassel <niklas.cassel@xxxxxxxx>
CC: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
CC: Cyrille Pitchen <cyrille.pitchen@xxxxxxxxxxxxxxxxxx>
CC: linux-pci@xxxxxxxxxxxxxxx (open list:PCI ENDPOINT SUBSYSTEM)
CC: linux-kernel@xxxxxxxxxxxxxxx (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
