can: peak_usb: use ARRAY_SIZE instead of NULL termination for peak_usb_adapters_list

This patch converts the list "static struct peak_usb_adapter
*peak_usb_adapters_list[]" to be used with ARRAY_SIZE not with a NULL
termination, as the size is known during compile time.

Acked-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_core.c b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
index c62f48a1161d1e871550489cbf3e5b4ccd90aa1e..26c0cc3ce3b2e7fc6da15f44af43ac6aa27b9c82 100644 (file)
--- a/drivers/net/can/usb/peak_usb/pcan_usb_core.c
+++ b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
@@ -46,7 +46,6 @@ MODULE_DEVICE_TABLE(usb, peak_usb_table);
 static struct peak_usb_adapter *peak_usb_adapters_list[] = {
        &pcan_usb,
        &pcan_usb_pro,
-       NULL,
 };
 
 /*
@@ -857,17 +856,18 @@ static int peak_usb_probe(struct usb_interface *intf,
 {
        struct usb_device *usb_dev = interface_to_usbdev(intf);
        const u16 usb_id_product = le16_to_cpu(usb_dev->descriptor.idProduct);
-       struct peak_usb_adapter *peak_usb_adapter, **pp;
+       struct peak_usb_adapter *peak_usb_adapter = NULL;
        int i, err = -ENOMEM;
 
        usb_dev = interface_to_usbdev(intf);
 
        /* get corresponding PCAN-USB adapter */
-       for (pp = peak_usb_adapters_list; *pp; pp++)
-               if ((*pp)->device_id == usb_id_product)
+       for (i = 0; i < ARRAY_SIZE(peak_usb_adapters_list); i++)
+               if (peak_usb_adapters_list[i]->device_id == usb_id_product) {
+                       peak_usb_adapter = peak_usb_adapters_list[i];
                        break;
+               }
 
-       peak_usb_adapter = *pp;
        if (!peak_usb_adapter) {
                /* should never come except device_id bad usage in this file */
                pr_err("%s: didn't find device id. 0x%x in devices list\n",