From: kbuild test robot <fengguang.wu@xxxxxxxxx>
Use kmemdup rather than duplicating its implementation
Generated by: scripts/coccinelle/api/memdup.cocci
Fixes: fe1c559e1567 ("ACS ACR122U not working: pn533_usb 1-1:1.0: NFC: Couldn't poweron...")
CC: Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: kbuild test robot <fengguang.wu@xxxxxxxxx>
Signed-off-by: Julia Lawall <julia.lawall@xxxxxxx>
---
url:
https://github.com/0day-ci/linux/commits/Greg-KH/NFC-pn533-don-t-send-USB-data-off-of-the-stack/20180518-100416
:::::: branch date: 54 minutes ago
:::::: commit date: 54 minutes ago
usb.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
--- a/drivers/nfc/pn533/usb.c
+++ b/drivers/nfc/pn533/usb.c
@@ -153,10 +153,9 @@ static int pn533_usb_send_ack(struct pn5
char *buffer;
int rc;
- buffer = kmalloc(sizeof(ack), GFP_KERNEL);
+ buffer = kmemdup(ack, sizeof(ack), GFP_KERNEL);
if (!buffer)
return -ENOMEM;
- memcpy(buffer, ack, sizeof(ack));
phy->out_urb->transfer_buffer = (u8 *)ack;
phy->out_urb->transfer_buffer_length = sizeof(ack);
@@ -390,10 +389,9 @@ static int pn533_acr122_poweron_rdr(stru
dev_dbg(&phy->udev->dev, "%s\n", __func__);
- buffer = kmalloc(sizeof(cmd), GFP_KERNEL);
+ buffer = kmemdup(cmd, sizeof(cmd), GFP_KERNEL);
if (!buffer)
return -ENOMEM;
- memcpy(buffer, cmd, sizeof(cmd));
init_completion(&arg.done);
cntx = phy->in_urb->context; /* backup context */
