[PATCH 6.3 088/199] spi: spi-geni-qcom: correctly handle -EPROBE_DEFER from dma_request_chan()

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From: Neil Armstrong <neil.armstrong@xxxxxxxxxx>

[ Upstream commit 9d7054fb3ac2e8d252aae1268f20623f244e644f ]

Now spi_geni_grab_gpi_chan() errors are correctly reported, the
-EPROBE_DEFER error should be returned from probe in case the
GPI dma driver is built as module and/or not probed yet.

Fixes: b59c122484ec ("spi: spi-geni-qcom: Add support for GPI dma")
Fixes: 6532582c353f ("spi: spi-geni-qcom: fix error handling in spi_geni_grab_gpi_chan()")
Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230615-topic-sm8550-upstream-fix-spi-geni-qcom-probe-v2-1-670c3d9e8c9c@xxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/spi/spi-geni-qcom.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/spi/spi-geni-qcom.c b/drivers/spi/spi-geni-qcom.c
index b106faf21a723..baf477383682d 100644
--- a/drivers/spi/spi-geni-qcom.c
+++ b/drivers/spi/spi-geni-qcom.c
@@ -646,6 +646,8 @@ static int spi_geni_init(struct spi_geni_master *mas)
 			geni_se_select_mode(se, GENI_GPI_DMA);
 			dev_dbg(mas->dev, "Using GPI DMA mode for SPI\n");
 			break;
+		} else if (ret == -EPROBE_DEFER) {
+			goto out_pm;
 		}
 		/*
 		 * in case of failure to get gpi dma channel, we can still do the
-- 
2.39.2






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