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/drivers/mmc/core/bus.c
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..
@@ -1,12 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  *  linux/drivers/mmc/core/bus.c
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  *
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  *  Copyright (C) 2003 Russell King, All Rights Reserved.
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  *  Copyright (C) 2007 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 version 2 as
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- * published by the Free Software Foundation.
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  *
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  *  MMC card bus driver model
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  */
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@@ -71,6 +68,7 @@
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 {
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 	struct mmc_card *card = mmc_dev_to_card(dev);
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 	const char *type;
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+	unsigned int i;
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 	int retval = 0;
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 	switch (card->type) {
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..
@@ -96,6 +94,31 @@
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 			return retval;
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 	}
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+	if (card->type == MMC_TYPE_SDIO || card->type == MMC_TYPE_SD_COMBO) {
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+		retval = add_uevent_var(env, "SDIO_ID=%04X:%04X",
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+					card->cis.vendor, card->cis.device);
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+		if (retval)
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+			return retval;
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+
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+		retval = add_uevent_var(env, "SDIO_REVISION=%u.%u",
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+					card->major_rev, card->minor_rev);
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+		if (retval)
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+			return retval;
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+
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+		for (i = 0; i < card->num_info; i++) {
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+			retval = add_uevent_var(env, "SDIO_INFO%u=%s", i+1, card->info[i]);
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+			if (retval)
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+				return retval;
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+		}
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+	}
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+
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+	/*
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+	 * SDIO (non-combo) cards are not handled by mmc_block driver and do not
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+	 * have accessible CID register which used by mmc_card_name() function.
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+	 */
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+	if (card->type == MMC_TYPE_SDIO)
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+		return 0;
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+
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 	retval = add_uevent_var(env, "MMC_NAME=%s", mmc_card_name(card));
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 	if (retval)
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 		return retval;