misc: rtsx_usb: Use USB remote wakeup signaling for card insertion detection (883a87dd) · Commits · 戴 / test

Although rtsx_usb doesn't support card removal detection, card insertion will resume rtsx_usb by USB remote wakeup signaling. When rtsx_usb gets resumed, also resumes its child devices, rtsx_usb_sdmmc and rtsx_usb_ms, to notify them there's a card in its slot. Signed-off-by:

Kai-Heng Feng <kai.heng.feng@canonical.com> Tested-by:

Oleksandr Natalenko <oleksandr@natalenko.name> Signed-off-by:

Ulf Hansson <ulf.hansson@linaro.org>

drivers/misc/cardreader/rtsx_usb.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -723,8 +723,15 @@ static int rtsx_usb_suspend(struct usb_interface *intf, pm_message_t message)
		return 0;
		}

		static int rtsx_usb_resume_child(struct device dev, void data)
		{
		pm_request_resume(dev);
		return 0;
		}

		static int rtsx_usb_resume(struct usb_interface *intf)
		{
		device_for_each_child(&intf->dev, NULL, rtsx_usb_resume_child);
		return 0;
		}

		@@ -734,6 +741,7 @@ static int rtsx_usb_reset_resume(struct usb_interface *intf)
		(struct rtsx_ucr *)usb_get_intfdata(intf);

		rtsx_usb_reset_chip(ucr);
		device_for_each_child(&intf->dev, NULL, rtsx_usb_resume_child);
		return 0;
		}

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