[PATCH v4 resend] crypto: picoxcell: adjust the position of tasklet_init and fix missed tasklet_kill

* [PATCH v4 resend] crypto: picoxcell: adjust the position of tasklet_init and fix missed tasklet_kill
@ 2019-12-09 16:21 Chuhong Yuan
  2019-12-20  7:05 ` Herbert Xu
  0 siblings, 1 reply; 2+ messages in thread
From: Chuhong Yuan @ 2019-12-09 16:21 UTC (permalink / raw)
  Cc: Herbert Xu, Chuhong Yuan, linux-kernel, linux-crypto, Jamie Iles,
	David S . Miller, linux-arm-kernel

Since tasklet is needed to be initialized before registering IRQ
handler, adjust the position of tasklet_init to fix the wrong order.

Besides, to fix the missed tasklet_kill, this patch adds a helper
function and uses devm_add_action to kill the tasklet automatically.

Fixes: ce92136843cb ("crypto: picoxcell - add support for the picoxcell crypto engines")
Signed-off-by: Chuhong Yuan <hslester96@gmail•com>
---
Changes in v4:
  - Use devm_add_action instead of devm_add_action_or_reset.

 drivers/crypto/picoxcell_crypto.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/drivers/crypto/picoxcell_crypto.c b/drivers/crypto/picoxcell_crypto.c
index 29da449b3e9e..d187312b9864 100644
--- a/drivers/crypto/picoxcell_crypto.c
+++ b/drivers/crypto/picoxcell_crypto.c
@@ -1595,6 +1595,11 @@ static const struct of_device_id spacc_of_id_table[] = {
 MODULE_DEVICE_TABLE(of, spacc_of_id_table);
 #endif /* CONFIG_OF */
 
+static void spacc_tasklet_kill(void *data)
+{
+	tasklet_kill(data);
+}
+
 static int spacc_probe(struct platform_device *pdev)
 {
 	int i, err, ret;
@@ -1637,6 +1642,14 @@ static int spacc_probe(struct platform_device *pdev)
 		return -ENXIO;
 	}
 
+	tasklet_init(&engine->complete, spacc_spacc_complete,
+		     (unsigned long)engine);
+
+	ret = devm_add_action(&pdev->dev, spacc_tasklet_kill,
+			      &engine->complete);
+	if (ret)
+		return ret;
+
 	if (devm_request_irq(&pdev->dev, irq->start, spacc_spacc_irq, 0,
 			     engine->name, engine)) {
 		dev_err(engine->dev, "failed to request IRQ\n");
@@ -1694,8 +1707,6 @@ static int spacc_probe(struct platform_device *pdev)
 	INIT_LIST_HEAD(&engine->completed);
 	INIT_LIST_HEAD(&engine->in_progress);
 	engine->in_flight = 0;
-	tasklet_init(&engine->complete, spacc_spacc_complete,
-		     (unsigned long)engine);
 
 	platform_set_drvdata(pdev, engine);
 
-- 
2.24.0


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