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| author |  Ulf Hansson <ulf.hansson@linaro.org>
| 2016-09-15 14:46:21 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org>
| 2016-10-17 15:43:03 +0200 |
| commit | 4f48aa7a11bfed9502a7c85a5b68cd40ea827f73 (patch) | |
| tree | 81a452799e8cfe16b171e1f18e49ff24cc90487c /drivers/mmc | |
| parent | mmc: rtsx_usb_sdmmc: Avoid keeping the device runtime resumed when unused (diff) | |
| download | linux-4f48aa7a11bfed9502a7c85a5b68cd40ea827f73.tar.gz linux-4f48aa7a11bfed9502a7c85a5b68cd40ea827f73.tar.bz2 linux-4f48aa7a11bfed9502a7c85a5b68cd40ea827f73.zip | |
mmc: rtsx_usb_sdmmc: Handle runtime PM while changing the led
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>
Diffstat (limited to 'drivers/mmc')
| -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 e0b85904c9bb..6e9c0f8fddb1 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 |