From 172d59ecd61b89f535ad99a7e531c0f111453b9a Mon Sep 17 00:00:00 2001 From: Grygorii Strashko Date: Wed, 8 Apr 2020 21:55:01 +0300 Subject: [PATCH] dmaengine: ti: k3-psil: fix deadlock on error path The mutex_unlock() is missed on error path of psil_get_ep_config() which causes deadlock, so add missed mutex_unlock(). Fixes: 8c6bb62f6b4a ("dmaengine: ti: k3 PSI-L remote endpoint configuration") Signed-off-by: Grygorii Strashko Acked-by: Peter Ujfalusi Link: https://lore.kernel.org/r/20200408185501.30776-1-grygorii.strashko@ti.com Signed-off-by: Vinod Koul --- drivers/dma/ti/k3-psil.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/dma/ti/k3-psil.c b/drivers/dma/ti/k3-psil.c index d7b965049ccb..fb7c8150b0d1 100644 --- a/drivers/dma/ti/k3-psil.c +++ b/drivers/dma/ti/k3-psil.c @@ -27,6 +27,7 @@ struct psil_endpoint_config *psil_get_ep_config(u32 thread_id) soc_ep_map = &j721e_ep_map; } else { pr_err("PSIL: No compatible machine found for map\n"); + mutex_unlock(&ep_map_mutex); return ERR_PTR(-ENOTSUPP); } pr_debug("%s: Using map for %s\n", __func__, soc_ep_map->name);