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crypto: stm32/cryp - defer probe for reset controller

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Change stm32 CRYP driver to defer its probe operation when
reset controller device is registered but has not been probed yet.

Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>
Signed-off-by: Nicolas Toromanoff <nicolas.toromanoff@foss.st.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Etienne Carriere 2021-11-30 08:54:53 +01:00 committed by Herbert Xu
parent 3219c2b1bd
commit 0a2f9f57c6
1 changed files with 6 additions and 2 deletions
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8
drivers/crypto/stm32/stm32-cryp.c
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@ -1973,7 +1973,11 @@ static int stm32_cryp_probe(struct platform_device *pdev)
pm_runtime_enable(dev);
rst = devm_reset_control_get(dev, NULL);
if (!IS_ERR(rst)) {
if (IS_ERR(rst)) {
ret = PTR_ERR(rst);
if (ret == -EPROBE_DEFER)
goto err_rst;
} else {
reset_control_assert(rst);
udelay(2);
reset_control_deassert(rst);
@ -2024,7 +2028,7 @@ err_engine1:
spin_lock(&cryp_list.lock);
list_del(&cryp->list);
spin_unlock(&cryp_list.lock);
err_rst:
pm_runtime_disable(dev);
pm_runtime_put_noidle(dev);
pm_runtime_disable(dev);