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Wed, 29 Apr 2026 06:27:16 -0700 (PDT) Received: from [192.168.100.6] ([2800:bf0:82:11a2:7ac4:1f2:947b:2b6]) by smtp.gmail.com with ESMTPSA id a1e0cc1a2514c-95cb7608f00sm898756241.6.2026.04.29.06.27.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Apr 2026 06:27:15 -0700 (PDT) From: Kurt Borja Date: Wed, 29 Apr 2026 08:27:02 -0500 Subject: [PATCH v5] platform/x86: alienware-wmi-base: Transition to new WMI API Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260429-aw-new-api-v5-1-7702668d04c6@gmail.com> X-B4-Tracking: v=1; b=H4sIAAAAAAAC/3XNTQ6CMBCG4auYrq3pzBQEV97DuGhpC03kJ2BAQ 7i7BReCxuU3yfPOyDrbetux025kre195+sqjGi/Y1mhqtxyb8JmKDAWgMTVwCs7cNV4DhkkDgS Ao4gF0LTW+ccSu1zDLnx3r9vn0u5hvr4zRGKd6YEDT6MUhHYKNCXnvFT+dsjqks2ZHtcUNhQDJ S0MkXaJQfym9J9SoNYJ0qmMMDU/X+WHSkw2VAZqMBMxSjBHZdZ0mqYXdqyedFUBAAA= X-Change-ID: 20260123-aw-new-api-1c18f1011f35 To: =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Armin Wolf , Hans de Goede Cc: platform-driver-x86@vger.kernel.org, Dell.Client.Kernel@dell.com, linux-kernel@vger.kernel.org, Kurt Borja X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2612; i=kuurtb@gmail.com; h=from:subject:message-id; bh=3rjNe5SzwzUAH8Fg/UbI3DxCjsSKhvvrLIJo3HOpTn8=; b=owGbwMvMwCUmluBs8WX+lTTG02pJDJmf2I0eJxtb50d9TteMDj21+Mm616YBB3cv1vXK6eu94 VthbzGzo5SFQYyLQVZMkaU9YdG3R1F5b/0OhN6HmcPKBDKEgYtTACZSPJ/hf/G3N/kG/aryXst1 prX/PcEgeu1q2tMzR/Ieie8O2jTzz1qGX0xWe/+/WV4Qktdud2l99HUpDgETzj8/qnJDu48dNjt ZzA4A X-Developer-Key: i=kuurtb@gmail.com; a=openpgp; fpr=54D3BE170AEF777983C3C63B57E3B6585920A69A Transition to the new wmi_buffer based WMI API. Signed-off-by: Kurt Borja Reviewed-by: Armin Wolf --- v5: - Use wmidev_invoke_procedure in the !out_data case v4: https://patch.msgid.link/20260428-aw-new-api-v4-1-d2c06241d7ad@gmail.com - Rebase to use the new wmidev_invoke_method() with size check v3: https://patch.msgid.link/20260331-aw-new-api-v3-1-ef03b94529d8@gmail.com - Use __free() instead of manual cleanup. - Include v2: https://patch.msgid.link/20260331-aw-new-api-v2-1-3b0d33bf8d22@gmail.com - Cast wmi_buffer data to __le32 and then use le32_to_cpu() before returning v1: https://patch.msgid.link/20260330-aw-new-api-v1-1-95910bfa1b38@gmail.com --- drivers/platform/x86/dell/alienware-wmi-base.c | 31 +++++++++++++++-------= ---- 1 file changed, 18 insertions(+), 13 deletions(-) diff --git a/drivers/platform/x86/dell/alienware-wmi-base.c b/drivers/platf= orm/x86/dell/alienware-wmi-base.c index 64562b92314f..19cadf21203a 100644 --- a/drivers/platform/x86/dell/alienware-wmi-base.c +++ b/drivers/platform/x86/dell/alienware-wmi-base.c @@ -12,8 +12,13 @@ #include #include #include +#include +#include #include #include + +#include + #include "alienware-wmi.h" =20 MODULE_AUTHOR("Mario Limonciello "); @@ -150,22 +155,22 @@ u8 alienware_interface; int alienware_wmi_command(struct wmi_device *wdev, u32 method_id, void *in_args, size_t in_size, u32 *out_data) { - struct acpi_buffer out =3D {ACPI_ALLOCATE_BUFFER, NULL}; - struct acpi_buffer in =3D {in_size, in_args}; - acpi_status ret; + struct wmi_buffer out, in =3D { + .data =3D in_args, + .length =3D in_size, + }; + int ret; =20 - ret =3D wmidev_evaluate_method(wdev, 0, method_id, &in, out_data ? &out := NULL); - if (ACPI_FAILURE(ret)) - return -EIO; + if (!out_data) + return wmidev_invoke_procedure(wdev, 0, method_id, &in); =20 - union acpi_object *obj __free(kfree) =3D out.pointer; + ret =3D wmidev_invoke_method(wdev, 0, method_id, &in, &out, + sizeof(*out_data)); + if (ret) + return ret; =20 - if (out_data) { - if (obj && obj->type =3D=3D ACPI_TYPE_INTEGER) - *out_data =3D (u32)obj->integer.value; - else - return -ENOMSG; - } + __le32 *data __free(kfree) =3D out.data; + *out_data =3D le32_to_cpu(*data); =20 return 0; } --- base-commit: 254f49634ee16a731174d2ae34bc50bd5f45e731 change-id: 20260123-aw-new-api-1c18f1011f35 --=20 Thanks,=20 ~ Kurt