diff --git a/.golangci.yaml b/.golangci.yaml
index dd176c51f..61f096697 100644
--- a/.golangci.yaml
+++ b/.golangci.yaml
@@ -152,6 +152,9 @@ linters:
           - gocognit
           - gocyclo
         path: _test\.go$
+      - linters:
+          - nolintlint
+        path: 'pkg/tools/(i2c\.go|spi\.go)$'
 
 issues:
   max-issues-per-linter: 0
diff --git a/pkg/devices/sources/usb_linux.go b/pkg/devices/sources/usb_linux.go
index be0193cfb..2bb38941f 100644
--- a/pkg/devices/sources/usb_linux.go
+++ b/pkg/devices/sources/usb_linux.go
@@ -35,9 +35,8 @@ var usbClassToCapability = map[string]string{
 }
 
 type USBMonitor struct {
-	cmd    *exec.Cmd
-	cancel context.CancelFunc
-	mu     sync.Mutex
+	cmd *exec.Cmd
+	mu  sync.Mutex
 }
 
 func NewUSBMonitor() *USBMonitor {