netdev - [RFC v1 PATCH 2/3] caam: add defer probe when the caam driver cannot identify SoC

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Date:   Mon, 19 Apr 2021 12:27:21 +0800
From:   "Alice Guo (OSS)" <alice.guo@....nxp.com>
To:     gregkh@...uxfoundation.org, rafael@...nel.org,
        horia.geanta@....com, aymen.sghaier@....com,
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Subject: [RFC v1 PATCH 2/3] caam: add defer probe when the caam driver cannot identify SoC

From: Alice Guo <alice.guo@....com>

When imx8_soc_info_driver uses module_platform_driver() to regitser
itself, the caam driver cannot identify the SoC in the machine because
the SoC driver is probed later, so that add return -EPROBE_DEFER.

Signed-off-by: Alice Guo <alice.guo@....com>
---
 drivers/crypto/caam/ctrl.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c
index ca0361b2dbb0..d08f8cc4131f 100644
--- a/drivers/crypto/caam/ctrl.c
+++ b/drivers/crypto/caam/ctrl.c
@@ -635,6 +635,9 @@ static int caam_probe(struct platform_device *pdev)
 	nprop = pdev->dev.of_node;
 
 	imx_soc_match = soc_device_match(caam_imx_soc_table);
+	if (IS_ERR(imx_soc_match))
+		return PTR_ERR(imx_soc_match);
+
 	caam_imx = (bool)imx_soc_match;
 
 	if (imx_soc_match) {
-- 
2.17.1