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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/net/nfc/nci/uart.c
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@@ -192,10 +192,8 @@
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 	if (!nu)
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 		return;
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-	if (nu->tx_skb)
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-		kfree_skb(nu->tx_skb);
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-	if (nu->rx_skb)
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-		kfree_skb(nu->rx_skb);
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+	kfree_skb(nu->tx_skb);
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+	kfree_skb(nu->rx_skb);
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 	skb_queue_purge(&nu->tx_q);
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@@ -294,7 +292,8 @@
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 /* We don't provide read/write/poll interface for user space. */
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 static ssize_t nci_uart_tty_read(struct tty_struct *tty, struct file *file,
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-				 unsigned char __user *buf, size_t nr)
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+				 unsigned char *buf, size_t nr,
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+				 void **cookie, unsigned long offset)
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 {
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 	return 0;
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 }
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@@ -465,6 +464,7 @@
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 	.receive_buf	= nci_uart_tty_receive,
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 	.write_wakeup	= nci_uart_tty_wakeup,
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 	.ioctl		= nci_uart_tty_ioctl,
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+	.compat_ioctl	= nci_uart_tty_ioctl,
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 };
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 static int __init nci_uart_init(void)