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authorAlan Stern <stern@rowland.harvard.edu>2016-09-26 15:45:41 -0700
committerUlf Hansson <ulf.hansson@linaro.org>2016-10-17 15:43:04 +0200
commit796aa46adf1d90eab36ae06a42e6d3f10b28a75c (patch)
tree911f0f6a073f4812edbe3e3208f52b329e3d690d /drivers/memstick
parent4f48aa7a11bfed9502a7c85a5b68cd40ea827f73 (diff)
memstick: rtsx_usb_ms: Runtime resume the device when polling for cards
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> Cc: <stable@vger.kernel.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/memstick')
-rw-r--r--drivers/memstick/host/rtsx_usb_ms.c2
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;

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