diff options
| author | Ulf Hansson <ulf.hansson@linaro.org> | 2016-09-15 14:46:21 +0200 |
|---|---|---|
| committer | Sasha Levin <alexander.levin@verizon.com> | 2016-11-23 21:30:37 -0500 |
| commit | b2580c4ba788bd913759b14dc9f5a9ef2ada997d (patch) | |
| tree | 85a55a997ed22ce370484a0551fdbe43ba615d87 | |
| parent | 29cce652d7f43481a8cab30d94b73304849ce1cb (diff) | |
mmc: rtsx_usb_sdmmc: Handle runtime PM while changing the led
[ Upstream commit 4f48aa7a11bfed9502a7c85a5b68cd40ea827f73 ]
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 <rrs@researchut.com>
Tested-by: Ritesh Raj Sarraf <rrs@researchut.com>
Cc: <stable@vger.kernel.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
| -rw-r--r-- | drivers/mmc/host/rtsx_usb_sdmmc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/mmc/host/rtsx_usb_sdmmc.c b/drivers/mmc/host/rtsx_usb_sdmmc.c index c7a3144379c3..a9e97a138f3d 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 |