diff mbox series

drm/bridge: cdns: fix reference leak in cdns_dsi_transfer

Message ID 20201127094435.120907-1-miaoqinglang@huawei.com (mailing list archive)
State New, archived
Headers show
Series drm/bridge: cdns: fix reference leak in cdns_dsi_transfer | expand

Commit Message

Qinglang Miao Nov. 27, 2020, 9:44 a.m. UTC
pm_runtime_get_sync will increment pm usage counter even it
failed. Forgetting to putting operation will result in a
reference leak here.

A new function pm_runtime_resume_and_get is introduced in
[0] to keep usage counter balanced. So We fix the reference
leak by replacing it with new funtion.

[0] dd8088d5a896 ("PM: runtime: Add  pm_runtime_resume_and_get to deal with usage counter")

Fixes: e19233955d9e ("drm/bridge: Add Cadence DSI driver")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com>
 drivers/gpu/drm/bridge/cdns-dsi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series


diff --git a/drivers/gpu/drm/bridge/cdns-dsi.c b/drivers/gpu/drm/bridge/cdns-dsi.c
index 76373e31d..b31281f76 100644
--- a/drivers/gpu/drm/bridge/cdns-dsi.c
+++ b/drivers/gpu/drm/bridge/cdns-dsi.c
@@ -1028,7 +1028,7 @@  static ssize_t cdns_dsi_transfer(struct mipi_dsi_host *host,
 	struct mipi_dsi_packet packet;
 	int ret, i, tx_len, rx_len;
-	ret = pm_runtime_get_sync(host->dev);
+	ret = pm_runtime_resume_and_get(host->dev);
 	if (ret < 0)
 		return ret;