修改4g拨号为QMI,需要在系统里后台执行quectel-CM

hc

2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5

 kernel/net/smc/smc_tx.c
..
..
@@ -110,8 +110,8 @@
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 			break; /* at least 1 byte of free & no urgent data */
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 		set_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
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 		sk_wait_event(sk, &timeo,
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-			      sk->sk_err ||
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-			      (sk->sk_shutdown & SEND_SHUTDOWN) ||
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+			      READ_ONCE(sk->sk_err) ||
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+			      (READ_ONCE(sk->sk_shutdown) & SEND_SHUTDOWN) ||
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 			      smc_cdc_rxed_any_close(conn) ||
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 			      (atomic_read(&conn->sndbuf_space) &&
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 			       !conn->urg_tx_pend),