zd1211rw: remove needless check before usb_free_coherent()

usb_free_coherent() is safe with NULL addr and this check is
not required.

Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200630070404.8207-1-vulab@iscas.ac.cn

diff --git a/drivers/net/wireless/zydas/zd1211rw/zd_usb.c b/drivers/net/wireless/zydas/zd1211rw/zd_usb.c
index 8ff0374126e4fc4430180b5c1d9207238a1f984e..65b5985ad402d25fd44c6e0b6d6a58da54c262f9 100644 (file)
--- a/drivers/net/wireless/zydas/zd1211rw/zd_usb.c
+++ b/drivers/net/wireless/zydas/zd1211rw/zd_usb.c
@@ -600,9 +600,7 @@ void zd_usb_disable_int(struct zd_usb *usb)
        dev_dbg_f(zd_usb_dev(usb), "urb %p killed\n", urb);
        usb_free_urb(urb);
 
-       if (buffer)
-               usb_free_coherent(udev, USB_MAX_EP_INT_BUFFER,
-                                 buffer, buffer_dma);
+       usb_free_coherent(udev, USB_MAX_EP_INT_BUFFER, buffer, buffer_dma);
 }
 
 static void handle_rx_packet(struct zd_usb *usb, const u8 *buffer,