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authorGrygorii Strashko <grygorii.strashko@ti.com>2020-04-08 21:55:01 +0300
committerVinod Koul <vkoul@kernel.org>2020-04-15 21:38:28 +0530
commit172d59ecd61b89f535ad99a7e531c0f111453b9a (patch)
treef7efc3a6f7880f2af625fc25469bf3f2576405ef /drivers/dma
parentae148b43516d90756ff8255925fb7df142b0c76e (diff)
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 <grygorii.strashko@ti.com> Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Link: https://lore.kernel.org/r/20200408185501.30776-1-grygorii.strashko@ti.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/ti/k3-psil.c1
1 files changed, 1 insertions, 0 deletions
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);