Messages in this thread | | | Date | Tue, 27 Sep 2022 12:11:24 -0500 | From | Larry Finger <> | Subject | Problem with modprobe |
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Hi,
The driver for the Realtek RTL8821CE network card show some asymmetrical behavior between loading and unloading.
Starting from scratch, a load command provides the expected results:
finger@localhost:~/rtw88>sudo modprobe -v rtw88_8821ce insmod /lib/modules/6.1.0-rc3-wireless-next-00623-g2bc09edc7fa2-dirty/kernel/drivers/net/wireless/realtek/rtw88/rtw88_core.ko
insmod /lib/modules/6.1.0-rc3-wireless-next-00623-g2bc09edc7fa2-dirty/kernel/drivers/net/wireless/realtek/rtw88/rtw88_pci.ko
insmod /lib/modules/6.1.0-rc3-wireless-next-00623-g2bc09edc7fa2-dirty/kernel/drivers/net/wireless/realtek/rtw88/rtw88_8821c.ko
insmod /lib/modules/6.1.0-rc3-wireless-next-00623-g2bc09edc7fa2-dirty/kernel/drivers/net/wireless/realtek/rtw88/rtw88_8821ce.ko
Unloading produces a different result:
finger@localhost:~/rtw88>sudo modprobe -rv rtw88_8821ce rmmod rtw88_8821ce rmmod rtw88_pci rmmod rtw88_8821c
Note that rtw88_core is still loaded and needs to be unloaded separately:
finger@localhost:~/rtw88>sudo modprobe -rv rtw88_core rmmod rtw88_core
The appropriate lines from modules.dep reformatted for clarity are as follows:
kernel/drivers/net/wireless/realtek/rtw88/rtw88_core.ko: kernel/net/mac80211/mac80211.ko kernel/lib/crypto/libarc4.ko kernel/net/wireless/cfg80211.ko kernel/drivers/net/wireless/realtek/rtw88/rtw88_8821c.ko: kernel/drivers/net/wireless/realtek/rtw88/rtw88_core.ko kernel/net/mac80211/mac80211.ko kernel/lib/crypto/libarc4.ko kernel/net/wireless/cfg80211.ko kernel/drivers/net/wireless/realtek/rtw88/rtw88_8821ce.ko: kernel/drivers/net/wireless/realtek/rtw88/rtw88_8821c.ko kernel/drivers/net/wireless/realtek/rtw88/rtw88_pci.ko kernel/drivers/net/wireless/realtek/rtw88/rtw88_core.ko kernel/net/mac80211/mac80211.ko kernel/lib/crypto/libarc4.ko kernel/net/wireless/cfg80211.ko kernel/drivers/net/wireless/realtek/rtw88/rtw88_pci.ko: kernel/drivers/net/wireless/realtek/rtw88/rtw88_core.ko kernel/net/mac80211/mac80211.ko kernel/lib/crypto/libarc4.ko kernel/net/wireless/cfg80211.ko
What is the explanation for the failure to auto-unload rtw88_core?
Thanks,
Larry
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