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LIN1021-1860 : There is a calltrace when unbind the stmmac driver

Created: Oct 29, 2021    Updated: Nov 29, 2021
Resolved Date: Nov 10, 2021
Found In Version:
Fix Version:
Severity: Standard
Applicable for: Wind River Linux LTS 21
Component/s: Kernel


When run below commands, there is a calltrace as below:
$ cd /sys/class/net/eth0/device/driver
$ echo ff800000.ethernet > unbind

WARNING: CPU: 3 PID: 386 at drivers/clk/clk.c:810 clk_core_unprepare+0x114/0x274
Modules linked in: sch_fq_codel
CPU: 3 PID: 386 Comm: sh Tainted: G        W         5.10.74-yocto-standard #1
Hardware name: SoCFPGA Stratix 10 SoCDK (DT)
pstate: 00000005 (nzcv daif -PAN -UAO -TCO BTYPE=--)
pc : clk_core_unprepare+0x114/0x274
lr : clk_core_unprepare+0x114/0x274
sp : ffff800011bdbb10
 ... ..

This issue had been resolved by correcting clock operation.

Steps to Reproduce

Build project using --machine intel-socfpga-64 and the attached kernel config.

$ cd /sys/class/net/etha01/device/driver
$ echo ff800000.ethernet > unbind

The results are in the attached log.
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