HID: intel-thc-hid: intel-quickspi: fix autosuspend cleanup during teardown

quickspi_probe() calls pm_runtime_use_autosuspend(), but
quickspi_remove() does not call the matching
pm_runtime_dont_use_autosuspend() during teardown.

If the autosuspend delay is set to a negative value while autosuspend
is enabled, the runtime PM core increments usage_count to prevent
runtime suspend. Without calling pm_runtime_dont_use_autosuspend()
during teardown, this reference is not dropped.

The documentation for pm_runtime_use_autosuspend() also notes that it
is important to undo it with pm_runtime_dont_use_autosuspend() at
driver exit time, unless runtime PM was initially enabled with
devm_pm_runtime_enable().

Add the missing pm_runtime_dont_use_autosuspend() call to the driver
remove path.

This issue was found by manual code inspection.

Fixes: 6912aaf3fd24 ("HID: intel-thc-hid: intel-quickspi: Add PM implementation")
Cc: stable@vger.kernel.org
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Reviewed-by: Even Xu <even.xu@intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/hid/intel-thc-hid/intel-quickspi/pci-quickspi.c b/drivers/hid/intel-thc-hid/intel-quickspi/pci-quickspi.c
index da5ecfcd0fbf..5d35edf2b6d8 100644
--- a/drivers/hid/intel-thc-hid/intel-quickspi/pci-quickspi.c
+++ b/drivers/hid/intel-thc-hid/intel-quickspi/pci-quickspi.c
@@ -720,6 +720,7 @@ static void quickspi_remove(struct pci_dev *pdev)
 	quickspi_hid_remove(qsdev);
 	quickspi_dma_deinit(qsdev);
 
+	pm_runtime_dont_use_autosuspend(qsdev->dev);
 	pm_runtime_get_noresume(qsdev->dev);
 
 	quickspi_dev_deinit(qsdev);