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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/net/wireless/marvell/libertas/if_spi.c
..
..
@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  *	linux/drivers/net/wireless/libertas/if_spi.c
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  *
..
..
@@ -10,11 +11,6 @@
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  *	Colin McCabe <colin@cozybit.com>
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  *
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  *	Inspired by if_sdio.c, Copyright 2007-2008 Pierre Ossman
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (at your option) any later version.
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  */
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15
 
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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
..
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@@ -39,7 +35,7 @@
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 struct if_spi_packet {
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 	struct list_head		list;
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 	u16				blen;
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-	u8				buffer[0] __attribute__((aligned(4)));
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+	u8				buffer[] __aligned(4);
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 };
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40
 
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 struct if_spi_card {
..
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@@ -239,8 +235,9 @@
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 		spi_message_add_tail(&dummy_trans, &m);
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 	} else {
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 		/* Busy-wait while the SPU fills the FIFO */
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-		reg_trans.delay_usecs =
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+		reg_trans.delay.value =
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 			DIV_ROUND_UP((100 + (delay * 10)), 1000);
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+		reg_trans.delay.unit = SPI_DELAY_UNIT_USECS;
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 	}
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242
 
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 	/* read in data */
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@@ -770,19 +767,15 @@
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767
 
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 	/* Read the data from the WLAN module into our skb... */
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 	err = spu_read(card, IF_SPI_DATA_RDWRPORT_REG, data, ALIGN(len, 4));
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-	if (err)
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-		goto free_skb;
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+	if (err) {
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+		dev_kfree_skb(skb);
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+		goto out;
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+	}
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 	/* pass the SKB to libertas */
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 	err = lbs_process_rxed_packet(card->priv, skb);
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-	if (err)
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-		goto free_skb;
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+	/* lbs_process_rxed_packet() consumes the skb */
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778
 
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-	/* success */
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-	goto out;
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-
784
-free_skb:
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-	dev_kfree_skb(skb);
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 out:
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 	if (err)
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 		netdev_err(priv->dev, "%s: err=%d\n", __func__, err);
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@@ -796,15 +789,13 @@
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 {
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 	struct lbs_private *priv = card->priv;
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 	int err = 0;
799
-	u16 int_type, port_reg;
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+	u16 port_reg;
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793
 
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 	switch (type) {
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795
 	case MVMS_DAT:
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-		int_type = IF_SPI_CIC_TX_DOWNLOAD_OVER;
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 		port_reg = IF_SPI_DATA_RDWRPORT_REG;
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 		break;
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 	case MVMS_CMD:
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-		int_type = IF_SPI_CIC_CMD_DOWNLOAD_OVER;
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 		port_reg = IF_SPI_CMD_RDWRPORT_REG;
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 		break;
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 	default:
..
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@@ -1146,8 +1137,8 @@
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 	 * This will call alloc_etherdev.
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1138
 	 */
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 	priv = lbs_add_card(card, &spi->dev);
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-	if (!priv) {
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-		err = -ENOMEM;
1140
+	if (IS_ERR(priv)) {
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+		err = PTR_ERR(priv);
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 		goto free_card;
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 	}
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 	card->priv = priv;