From f099ba5897715dc06b7ba2e20aeba893df4354e7 Mon Sep 17 00:00:00 2001 From: Ulf Hansson Date: Thu, 15 Sep 2016 14:46:21 +0200 Subject: [PATCH] mmc: rtsx_usb_sdmmc: Handle runtime PM while changing the led commit 4f48aa7a11bfed9502a7c85a5b68cd40ea827f73 upstream. Accesses of the rtsx sdmmc's parent device, which is the rtsx usb device, must be done when it's runtime resumed. Currently this isn't case when changing the led, so let's fix this by adding a pm_runtime_get_sync() and a pm_runtime_put() around those operations. Reported-by: Ritesh Raj Sarraf Tested-by: Ritesh Raj Sarraf Cc: Alan Stern Signed-off-by: Ulf Hansson Signed-off-by: Ben Hutchings --- drivers/mmc/host/rtsx_usb_sdmmc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/mmc/host/rtsx_usb_sdmmc.c b/drivers/mmc/host/rtsx_usb_sdmmc.c index ca023b78a1622..b74cfc7f9c540 100644 --- a/drivers/mmc/host/rtsx_usb_sdmmc.c +++ b/drivers/mmc/host/rtsx_usb_sdmmc.c @@ -1309,6 +1309,7 @@ static void rtsx_usb_update_led(struct work_struct *work) container_of(work, struct rtsx_usb_sdmmc, led_work); struct rtsx_ucr *ucr = host->ucr; + pm_runtime_get_sync(sdmmc_dev(host)); mutex_lock(&ucr->dev_mutex); if (host->led.brightness == LED_OFF) @@ -1317,6 +1318,7 @@ static void rtsx_usb_update_led(struct work_struct *work) rtsx_usb_turn_on_led(ucr); mutex_unlock(&ucr->dev_mutex); + pm_runtime_put(sdmmc_dev(host)); } #endif -- 2.47.3