With the introduction of commit e42ac1418055 ("bpf: Check unsupported ops
from the bpf_struct_ops's cfi_stubs"), a HID-BPF struct_ops containing
a .hid_hw_request() or a .hid_hw_output_report() was failing to load
as the cfi stubs were not defined.
Fix that by defining those simple static functions and restore HID-BPF
functionality.
This was detected with the HID selftests suddenly failing on Linus' tree.
Cc: stable@xxxxxxxxxxxxxxx # v6.11+
Fixes: 9286675a2aed ("HID: bpf: add HID-BPF hooks for hid_hw_output_report")
Fixes: 8bd0488b5ea5 ("HID: bpf: add HID-BPF hooks for hid_hw_raw_requests")
Signed-off-by: Benjamin Tissoires <bentiss@xxxxxxxxxx>
---
Hi,
This commit should directly go in Linus tree before we start creating
topic branches for 6.13 given that the CI is now failing on our HID
master branch.
Cheers,
Benjamin
---
drivers/hid/bpf/hid_bpf_struct_ops.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/hid/bpf/hid_bpf_struct_ops.c b/drivers/hid/bpf/hid_bpf_struct_ops.c
index cd696c59ba0f..702c22fae136 100644
--- a/drivers/hid/bpf/hid_bpf_struct_ops.c
+++ b/drivers/hid/bpf/hid_bpf_struct_ops.c
@@ -276,9 +276,23 @@ static int __hid_bpf_rdesc_fixup(struct hid_bpf_ctx *ctx)
return 0;
}
+static int __hid_bpf_hw_request(struct hid_bpf_ctx *ctx, unsigned char reportnum,
+ enum hid_report_type rtype, enum hid_class_request reqtype,
+ u64 source)
+{
+ return 0;
+}
+
+static int __hid_bpf_hw_output_report(struct hid_bpf_ctx *ctx, u64 source)
+{
+ return 0;
+}
+
static struct hid_bpf_ops __bpf_hid_bpf_ops = {
.hid_device_event = __hid_bpf_device_event,
.hid_rdesc_fixup = __hid_bpf_rdesc_fixup,
+ .hid_hw_request = __hid_bpf_hw_request,
+ .hid_hw_output_report = __hid_bpf_hw_output_report,
};
static struct bpf_struct_ops bpf_hid_bpf_ops = {
---
base-commit: 13882369ceb9b0953f9f5ff8563bbccfd80d0ffd
change-id: 20240927-fix-hid-bpf-stubs-f80591a673c2
Best regards,
--
Benjamin Tissoires <bentiss@xxxxxxxxxx>
