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authorJorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>2019-10-09 17:41:22 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-10-10 16:28:12 +0300
commit387f625585d1a59e5dc7fbd6bd4002360cad78b0 (patch)
tree0ab312e653c31a61bdd66502a6e64b24bd985ccc /drivers/misc/fastrpc.c
parent55bcda35584c995d2544902e77c2ad5bee6e729b (diff)
downloadlinux-387f625585d1a59e5dc7fbd6bd4002360cad78b0.tar.xz
misc: fastrpc: handle interrupted contexts
Buffers owned by a context that has been interrupted either by a signal or a timeout might still be being accessed by the DSP. delegate returning the associated memory to a later time when the device is released. Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org> Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20191009144123.24583-5-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/fastrpc.c')
-rw-r--r--drivers/misc/fastrpc.c13
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index 666c431380ce..eef2cdc00672 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -984,12 +984,13 @@ static int fastrpc_internal_invoke(struct fastrpc_user *fl, u32 kernel,
}
bail:
- /* We are done with this compute context, remove it from pending list */
- spin_lock(&fl->lock);
- list_del(&ctx->node);
- spin_unlock(&fl->lock);
- fastrpc_context_put(ctx);
-
+ if (err != -ERESTARTSYS && err != -ETIMEDOUT) {
+ /* We are done with this compute context */
+ spin_lock(&fl->lock);
+ list_del(&ctx->node);
+ spin_unlock(&fl->lock);
+ fastrpc_context_put(ctx);
+ }
if (err)
dev_dbg(fl->sctx->dev, "Error: Invoke Failed %d\n", err);