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/Documentation/ABI/testing/sysfs-class-pktcdvd
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@@ -11,15 +11,17 @@
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 Contact:	Thomas Maier <balagi@justmail.de>
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 Description:
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-		add:		(WO) Write a block device id (major:minor) to
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+		==========	==============================================
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+		add		(WO) Write a block device id (major:minor) to
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 				create a new pktcdvd device and map it to the
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 				block device.
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-		remove:		(WO) Write the pktcdvd device id (major:minor)
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+		remove		(WO) Write the pktcdvd device id (major:minor)
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 				to remove the pktcdvd device.
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-		device_map:	(RO) Shows the device mapping in format:
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+		device_map	(RO) Shows the device mapping in format:
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 				pktcdvd[0-7] <pktdevid> <blkdevid>
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+		==========	==============================================
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 What:		/sys/class/pktcdvd/pktcdvd[0-7]/dev
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@@ -65,29 +67,31 @@
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 KernelVersion:	2.6.20
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 Contact:	Thomas Maier <balagi@justmail.de>
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 Description:
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-		size:		(RO) Contains the size of the bio write queue.
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+		==============	================================================
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+		size		(RO) Contains the size of the bio write queue.
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-		congestion_off:	(RW) If bio write queue size is below this mark,
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+		congestion_off	(RW) If bio write queue size is below this mark,
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 				accept new bio requests from the block layer.
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-		congestion_on:	(RW) If bio write queue size is higher as this
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+		congestion_on	(RW) If bio write queue size is higher as this
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 				mark, do no longer accept bio write requests
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 				from the block layer and wait till the pktcdvd
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 				device has processed enough bio's so that bio
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 				write queue size is below congestion off mark.
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 				A value of <= 0 disables congestion control.
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+		==============	================================================
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 Example:
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 --------
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-To use the pktcdvd sysfs interface directly, you can do:
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+To use the pktcdvd sysfs interface directly, you can do::
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-# create a new pktcdvd device mapped to /dev/hdc
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-echo "22:0" >/sys/class/pktcdvd/add
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-cat /sys/class/pktcdvd/device_map
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-# assuming device pktcdvd0 was created, look at stat's
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-cat /sys/class/pktcdvd/pktcdvd0/stat/kb_written
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-# print the device id of the mapped block device
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-fgrep pktcdvd0 /sys/class/pktcdvd/device_map
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-# remove device, using pktcdvd0 device id   253:0
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-echo "253:0" >/sys/class/pktcdvd/remove
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+    # create a new pktcdvd device mapped to /dev/hdc
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+    echo "22:0" >/sys/class/pktcdvd/add
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+    cat /sys/class/pktcdvd/device_map
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+    # assuming device pktcdvd0 was created, look at stat's
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+    cat /sys/class/pktcdvd/pktcdvd0/stat/kb_written
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+    # print the device id of the mapped block device
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+    fgrep pktcdvd0 /sys/class/pktcdvd/device_map
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+    # remove device, using pktcdvd0 device id   253:0
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+    echo "253:0" >/sys/class/pktcdvd/remove