diff options
| author | Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org> | 2019-10-09 16:41:22 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-10 15:28:12 +0200 |
| commit | 387f625585d1a59e5dc7fbd6bd4002360cad78b0 (patch) | |
| tree | 0ab312e653c31a61bdd66502a6e64b24bd985ccc /drivers/misc/fastrpc.c | |
| parent | misc: fastrpc: do not interrupt kernel calls (diff) | |
| download | linux-387f625585d1a59e5dc7fbd6bd4002360cad78b0.tar.xz linux-387f625585d1a59e5dc7fbd6bd4002360cad78b0.zip | |
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.c | 13 |
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); |