[PATCH v4 1/9] crypto: stm32/cryp - defer probe for reset controller
From: Nicolas Toromanoff <hidden>
Date: 2021-11-30 07:55:43
Also in:
linux-arm-kernel, lkml
Subsystem:
crypto api, the rest · Maintainers:
Herbert Xu, "David S. Miller", Linus Torvalds
From: Etienne Carriere <redacted> 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 <redacted> Signed-off-by: Nicolas Toromanoff <redacted> --- drivers/crypto/stm32/stm32-cryp.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/crypto/stm32/stm32-cryp.c b/drivers/crypto/stm32/stm32-cryp.c
index 7389a0536ff0..dcdd313485de 100644
--- a/drivers/crypto/stm32/stm32-cryp.c
+++ b/drivers/crypto/stm32/stm32-cryp.c@@ -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 @@ static int stm32_cryp_probe(struct platform_device *pdev) 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);
--
2.17.1