Messages in this thread | | | From | Kai-Heng Feng <> | Subject | [PATCH 0/5 v7] Keep rtsx_usb suspended when there's no card | Date | Mon, 5 Nov 2018 16:45:01 +0800 |
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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): memstick: rtsx_usb_ms: Add missing pm_runtime_disable() in probe function 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
v7: Keep CONFIG_PM_SLEEP for .suspend and .resume callbacks. Use CONFIG_PM for .runtime_suspend and .runtime_resume callbacks. Reorder pm_runtime_get_noresume() before pm_runtime_enable(). Add missing pm_runtime_disable().
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 | 172 +++++++++++++++++----------- drivers/misc/cardreader/rtsx_usb.c | 8 ++ 3 files changed, 117 insertions(+), 66 deletions(-)
-- 2.19.1
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