disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/drivers/net/can/at91_can.c
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@@ -1,13 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * at91_can.c - CAN network driver for AT91 SoC CAN controller
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  *
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  * (C) 2007 by Hans J. Koch <hjk@hansjkoch.de>
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  * (C) 2008, 2009, 2010, 2011 by Marc Kleine-Budde <kernel@pengutronix.de>
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- *
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- * This software may be distributed under the terms of the GNU General
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- * Public License ("GPL") version 2 as distributed in the 'COPYING'
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- * file from the main directory of the linux kernel source.
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- *
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  */
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8
 
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 #include <linux/clk.h>
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@@ -647,7 +643,7 @@
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  *
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  * The first message goes into mb nr. 1 and issues an interrupt. All
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  * rx ints are disabled in the interrupt handler and a napi poll is
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- * scheduled. We read the mailbox, but do _not_ reenable the mb (to
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+ * scheduled. We read the mailbox, but do _not_ re-enable the mb (to
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  * receive another message).
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  *
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  *    lower mbxs      upper
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@@ -665,13 +661,13 @@
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  *
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  * The variable priv->rx_next points to the next mailbox to read a
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  * message from. As long we're in the lower mailboxes we just read the
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- * mailbox but not reenable it.
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+ * mailbox but not re-enable it.
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  *
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- * With completion of the last of the lower mailboxes, we reenable the
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+ * With completion of the last of the lower mailboxes, we re-enable the
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  * whole first group, but continue to look for filled mailboxes in the
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  * upper mailboxes. Imagine the second group like overflow mailboxes,
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  * which takes CAN messages if the lower goup is full. While in the
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- * upper group we reenable the mailbox right after reading it. Giving
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+ * upper group we re-enable the mailbox right after reading it. Giving
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  * the chip more room to store messages.
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  *
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  * After finishing we look again in the lower group if we've still
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@@ -902,7 +898,8 @@
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 				CAN_ERR_CRTL_TX_WARNING :
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 				CAN_ERR_CRTL_RX_WARNING;
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 		}
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-	case CAN_STATE_ERROR_WARNING:	/* fallthrough */
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+		fallthrough;
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+	case CAN_STATE_ERROR_WARNING:
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 		/*
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 		 * from: ERROR_ACTIVE, ERROR_WARNING
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 		 * to  : ERROR_PASSIVE, BUS_OFF
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@@ -951,7 +948,8 @@
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 		netdev_dbg(dev, "Error Active\n");
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 		cf->can_id |= CAN_ERR_PROT;
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 		cf->data[2] = CAN_ERR_PROT_ACTIVE;
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-	case CAN_STATE_ERROR_WARNING:	/* fallthrough */
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+		fallthrough;
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+	case CAN_STATE_ERROR_WARNING:
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 		reg_idr = AT91_IRQ_ERRA | AT91_IRQ_WARN | AT91_IRQ_BOFF;
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 		reg_ier = AT91_IRQ_ERRP;
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 		break;
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@@ -1304,7 +1302,7 @@
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 		goto exit_put;
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 	}
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-	addr = ioremap_nocache(res->start, resource_size(res));
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+	addr = ioremap(res->start, resource_size(res));
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 	if (!addr) {
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 		err = -ENOMEM;
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 		goto exit_release;