diff options
| author | Alan Stern <stern@rowland.harvard.edu> | 2016-09-26 15:45:41 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-10-28 03:45:29 -0400 |
| commit | 959288b70e54e7add0849b5fc2d470112341c47c (patch) | |
| tree | 40a5123be2d15d1c26dbec168d57eb0000edcdd8 | |
| parent | d0ee9157a9d7056b3352c0b9225049cd4b588a0b (diff) | |
memstick: rtsx_usb_ms: Runtime resume the device when polling for cards
commit 796aa46adf1d90eab36ae06a42e6d3f10b28a75c upstream.
Accesses to the rtsx usb device, which is the parent of the rtsx memstick
device, must not be done unless it's runtime resumed.
Therefore when the rtsx_usb_ms driver polls for inserted memstick cards,
let's add pm_runtime_get|put*() to make sure accesses is done when the
rtsx usb device is runtime resumed.
Reported-by: Ritesh Raj Sarraf <rrs@researchut.com>
Tested-by: Ritesh Raj Sarraf <rrs@researchut.com>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/memstick/host/rtsx_usb_ms.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/memstick/host/rtsx_usb_ms.c b/drivers/memstick/host/rtsx_usb_ms.c index d34bc3530385..1b994897f0ff 100644 --- a/drivers/memstick/host/rtsx_usb_ms.c +++ b/drivers/memstick/host/rtsx_usb_ms.c @@ -681,6 +681,7 @@ static int rtsx_usb_detect_ms_card(void *__host) int err; for (;;) { + pm_runtime_get_sync(ms_dev(host)); mutex_lock(&ucr->dev_mutex); /* Check pending MS card changes */ @@ -703,6 +704,7 @@ static int rtsx_usb_detect_ms_card(void *__host) } poll_again: + pm_runtime_put(ms_dev(host)); if (host->eject) break; |