Hello Levin: Apologize for my HTML format past.I discovered that the backport patches also have dependency in 5.10 lts tree: [1]https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.201&id=75742ffc3630203e95844c72c7144f507e2a557d [2]https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.201&id=40e2e7f1bf0301d1ed7437b10d9e1c92cb51bf81 [3]https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.201&id=9c45bb363e26e86ebaf20f6d2009bedf19fc0d39 [4]https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.201&id=3a292cb18132cb7af3a146613f1c9a47ef6f8463 [5]https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.201&id=1a2a2e34569cf85cad743ee8095d07c3cba5473b and update version 2 depend patches link: [1] RTL8852AE: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0d484db60fc0c5f8848939a61004c6fa01fad61a [2] RTL8852BE: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=18e8055c88142d8f6e23ebdc38c126ec37844e5d [3] RTL8852CE: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8b1d66b50437b65ef109f32270bd936ca5437a83 [4] FW: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cf0d9a705d81a0f581865cefe0880f29589dd06f ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- I would like to express my gratitude for you efforts,and I want to provide you with the backport tip when kernel <=5.10 : the RTL8852{A,B,C} BT chip series depend patches in that patch [1](v5.11) and load new firmware need that patch [2](v5.4). Apologize for my pool English. link: [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0d484db60fc0c5f8848939a61004c6fa01fad61a [2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cf0d9a705d81a0f581865cefe0880f29589dd06f