releases/6.19.12/spi-amlogic-spifc-a4-unregister-ecc-engine-on-probe-.patch

From 0b18d2fad6d68d1832c30e382f24c11aec9c17e2 Mon Sep 17 00:00:00 2001
From: Sasha Levin <sashal@kernel.org>
Date: Sun, 22 Mar 2026 22:28:45 +0800
Subject: spi: amlogic: spifc-a4: unregister ECC engine on probe failure and
 remove() callback

From: Felix Gu <ustc.gu@gmail.com>

[ Upstream commit b0dc7e7c56573e7a52080f25f3179a45f3dd7e6f ]

aml_sfc_probe() registers the on-host NAND ECC engine, but teardown was
missing from both probe unwind and remove-time cleanup. Add a devm cleanup
action after successful registration so
nand_ecc_unregister_on_host_hw_engine() runs automatically on probe
failures and during device removal.

Fixes: 4670db6f32e9 ("spi: amlogic: add driver for Amlogic SPI Flash Controller")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
Link: https://patch.msgid.link/20260322-spifc-a4-v1-1-2dc5ebcbe0a9@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/spi/spi-amlogic-spifc-a4.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/spi/spi-amlogic-spifc-a4.c b/drivers/spi/spi-amlogic-spifc-a4.c
index b2589fe2425cc..3393e1f305709 100644
--- a/drivers/spi/spi-amlogic-spifc-a4.c
+++ b/drivers/spi/spi-amlogic-spifc-a4.c
@@ -1066,6 +1066,13 @@ static const struct nand_ecc_engine_ops aml_sfc_ecc_engine_ops = {
 	.finish_io_req = aml_sfc_ecc_finish_io_req,
 };
 
+static void aml_sfc_unregister_ecc_engine(void *data)
+{
+	struct nand_ecc_engine *eng = data;
+
+	nand_ecc_unregister_on_host_hw_engine(eng);
+}
+
 static int aml_sfc_clk_init(struct aml_sfc *sfc)
 {
 	sfc->gate_clk = devm_clk_get_enabled(sfc->dev, "gate");
@@ -1149,6 +1156,11 @@ static int aml_sfc_probe(struct platform_device *pdev)
 	if (ret)
 		return dev_err_probe(&pdev->dev, ret, "failed to register Aml host ecc engine.\n");
 
+	ret = devm_add_action_or_reset(dev, aml_sfc_unregister_ecc_engine,
+				       &sfc->ecc_eng);
+	if (ret)
+		return dev_err_probe(dev, ret, "failed to add ECC unregister action\n");
+
 	ret = of_property_read_u32(np, "amlogic,rx-adj", &val);
 	if (!ret)
 		sfc->rx_adj = val;
-- 
2.53.0