Re: [PATCH 0/5 v4] Keep rtsx_usb suspended when there's no card

[Oleksandr Natalenko]

Hi.

> 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 (5):
>   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
>   misc: rtsx_usb: / memstick: rtsx_usb_ms: Avoid long delay before
>     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.
>
> ---
>
> Kai-Heng Feng (5):
>   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
>   misc: rtsx_usb: / memstick: rtsx_usb_ms: Avoid long delay before
>     system suspend
>
>  drivers/memstick/core/memstick.c    |   4 +
>  drivers/memstick/host/rtsx_usb_ms.c | 148 +++++++++++++++-------------
>  drivers/misc/cardreader/rtsx_usb.c  |   9 ++
>  3 files changed, 91 insertions(+), 70 deletions(-)
>
> --
> 2.17.1

For the following device:

$ lsusb | grep Realtek
Bus 001 Device 004: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 
Card Reader Controller

Tested-by: Oleksandr Natalenko <oleksandr@xxxxxxxxxxxxxx>

No smoke.

Thanks.

--
  Oleksandr Natalenko (post-factum)