Hi, This is based on Ulf's work [1] [2]. This patch series can keep rtsx_usb suspended, to save ~0.5W on Intel platforms and ~1.5W on AMD platforms. [1] https://patchwork.kernel.org/patch/10440583/ [2] https://patchwork.kernel.org/patch/10445725/ Kai-Heng Feng (4): misc: rtsx_usb: Use USB remote wakeup signaling for card insertion detection memstick: Prevent memstick host from getting runtime suspended during card detection memstick: rtsx_usb_ms: Use ms_dev() helper memstick: rtsx_usb_ms: Support runtime power management v6: Move pm_runtime_get_noresume() to media_check(), to avoid potentially unblanced rpm count. v5: Corretly use system suspend/resume and runtime suspend/resume callback. Prevent runtime callbacks get call during system suspend. v4: Use pm_runtime_put() in memstick_check(). v3: Skip parent device check in rtsx_usb_resume_child(). Remove dev_dbg() if it only prints function name. Use ms_dev() helper at more places. Remove const qualifier for UNIVERSAL_DEV_PM_OPS. v2: Resend to linux-usb and LKML. drivers/memstick/core/memstick.c | 3 + drivers/memstick/host/rtsx_usb_ms.c | 173 +++++++++++++++++----------- drivers/misc/cardreader/rtsx_usb.c | 8 ++ 3 files changed, 116 insertions(+), 68 deletions(-) -- 2.17.1
