[RFC,v2,05/13] can: slcan: simplify the device de-allocation
diff mbox series

Message ID 20220602160434.225417-6-dario.binacchi@amarulasolutions.com
State New
Headers show
Series
  • can: slcan: extend supported features
Related show

Commit Message

Dario Binacchi June 2, 2022, 4:04 p.m. UTC 
Since slcan_devs array contains the addresses of the created devices, I
think it is more natural to use its address to remove it from the list.
It is not necessary to store the index of the array that points to the
device in the driver's private data.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
---

(no changes since v1)

 drivers/net/can/slcan.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

Patch
diff mbox series 

diff --git a/drivers/net/can/slcan.c b/drivers/net/can/slcan.c
index 956b47bd40a7..4df0455e11a2 100644
--- a/drivers/net/can/slcan.c
+++ b/drivers/net/can/slcan.c
@@ -428,11 +428,17 @@  static int slc_open(struct net_device *dev)
 
 static void slc_dealloc(struct slcan *sl)
 {
-	int i = sl->dev->base_addr;
+	unsigned int i;
 
-	free_candev(sl->dev);
-	if (slcan_devs)
-		slcan_devs[i] = NULL;
+	for (i = 0; i < maxdev; i++) {
+		if (sl->dev == slcan_devs[i]) {
+			free_candev(sl->dev);
+			slcan_devs[i] = NULL;
+			return;
+		}
+	}
+
+	pr_err("slcan: can't free %s resources\n",  sl->dev->name);
 }
 
 static int slcan_change_mtu(struct net_device *dev, int new_mtu)
@@ -529,7 +535,6 @@  static struct slcan *slc_alloc(void)
 
 	snprintf(dev->name, sizeof(dev->name), "slcan%d", i);
 	dev->netdev_ops = &slc_netdev_ops;
-	dev->base_addr  = i;
 	sl = netdev_priv(dev);
 
 	/* Initialize channel control data */