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d476d5995c
FCP meter and hwdep operations issue control transfers without preventing runtime suspend or disconnect. Protect the central request-and-response transport. One reference then covers the command, acknowledgment wait, and response. The initial step-zero request bypasses that transport. Hold an outer reference across the complete initialization sequence so the device stays active through step zero, notification-URB setup, and both initialization commands. The central transport keeps its guard for calls outside initialization; the existing active counter balances the nested calls. FCP has no private resume callback. Its suspend callback only removes the notification URB. Taking the initialization and transport guards under the existing protocol mutex causes no resume-side lock inversion. Assisted-by: Codex:gpt-5.6-sol Signed-off-by: Will Porter <mrwillporter@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://patch.msgid.link/20260827232143.149197-7-mrwillporter@gmail.com
1151 lines
28 KiB
1151 lines
28 KiB