[PATCH v2 3/8] firmware: cs_dsp: Support DSPs that don't require firmware download

[Richard Fitzgerald]

From: Simon Trimmer <simont@xxxxxxxxxxxxxxxxxxxxx>

When a DSP can self-boot from ROM it is not necessary to download
firmware during the powering up sequence.

A DSP that required firmware download would fail in a previous
configuration step if firmware was not available.

Signed-off-by: Simon Trimmer <simont@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Richard Fitzgerald <rf@xxxxxxxxxxxxxxxxxxxxx>
---
 drivers/firmware/cirrus/cs_dsp.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/firmware/cirrus/cs_dsp.c b/drivers/firmware/cirrus/cs_dsp.c
index 97b73a254380..513136a924cf 100644
--- a/drivers/firmware/cirrus/cs_dsp.c
+++ b/drivers/firmware/cirrus/cs_dsp.c
@@ -1301,6 +1301,9 @@ static int cs_dsp_load(struct cs_dsp *dsp, const struct firmware *firmware,
 	int regions = 0;
 	int ret, offset, type;
 
+	if (!firmware)
+		return 0;
+
 	ret = -EINVAL;
 
 	pos = sizeof(*header) + sizeof(*adsp1_sizes) + sizeof(*footer);
-- 
2.30.2