All of lore.kernel.org
 help / color / mirror / Atom feed
From: Mohamad Raizudeen <raizudeen.kerneldev@gmail.com>
To: herbert@gondor.apana.org.au, clabbe@baylibre.com, davem@davemloft.net
Cc: skhan@linuxfoundation.org, me@brighamcampbell.com,
	jkoolstra@xs4all.nl, linux-crypto@vger.kernel.org,
	linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org,
	Mohamad Raizudeen <raizudeen.kerneldev@gmail.com>,
	stable@vger.kernel.org
Subject: [PATCH] crypto: amlogic: Fix IRQ handler return value and fallthrough logic
Date: Tue,  8 Sep 2026 21:31:20 +0530	[thread overview]
Message-ID: <20260908160120.4805-1-raizudeen.kerneldev@gmail.com> (raw)

In irqreturn_t_meson_irq_handler(), when an interrupt matches a flow
but the status register is empty, the driver prints an error but
doesn't return. It falls through the loop and incorrectly prints an
`unknown irq` message.

Fix this by returning IRQ_HANDLED immediately after the error print.

Additionally, the handler returns IRQ_HANDLED for genuinely unknown
interrupts. This masks false interrupts and prevents the kernel from
detecting interrupts. Return IRQ_NONE instead for unhandled
interrupts.

Cc: stable@vger.kernel.org
Fixes: 48fe583fe5417 ("crypto: amlogic - Add crypto accelerator for amlogic GXL")
Signed-off-by: Mohamad Raizudeen <raizudeen.kerneldev@gmail.com>
---
 drivers/crypto/amlogic/amlogic-gxl-core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/crypto/amlogic/amlogic-gxl-core.c b/drivers/crypto/amlogic/amlogic-gxl-core.c
index 6cb33949915f..302b398405e2 100644
--- a/drivers/crypto/amlogic/amlogic-gxl-core.c
+++ b/drivers/crypto/amlogic/amlogic-gxl-core.c
@@ -38,11 +38,12 @@ static irqreturn_t meson_irq_handler(int irq, void *data)
 				return IRQ_HANDLED;
 			}
 			dev_err(mc->dev, "%s %d Got irq for flow %d but ctrl is empty\n", __func__, irq, flow);
+			return IRQ_HANDLED; 
 		}
 	}
 
 	dev_err(mc->dev, "%s %d from unknown irq\n", __func__, irq);
-	return IRQ_HANDLED;
+	return IRQ_NONE;
 }
 
 static struct meson_alg_template mc_algs[] = {
-- 
2.53.0


_______________________________________________
linux-amlogic mailing list
linux-amlogic@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-amlogic

WARNING: multiple messages have this Message-ID (diff)
From: Mohamad Raizudeen <raizudeen.kerneldev@gmail.com>
To: herbert@gondor.apana.org.au, clabbe@baylibre.com, davem@davemloft.net
Cc: skhan@linuxfoundation.org, me@brighamcampbell.com,
	jkoolstra@xs4all.nl, linux-crypto@vger.kernel.org,
	linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org,
	Mohamad Raizudeen <raizudeen.kerneldev@gmail.com>,
	stable@vger.kernel.org
Subject: [PATCH] crypto: amlogic: Fix IRQ handler return value and fallthrough logic
Date: Tue,  8 Sep 2026 21:31:20 +0530	[thread overview]
Message-ID: <20260908160120.4805-1-raizudeen.kerneldev@gmail.com> (raw)

In irqreturn_t_meson_irq_handler(), when an interrupt matches a flow
but the status register is empty, the driver prints an error but
doesn't return. It falls through the loop and incorrectly prints an
`unknown irq` message.

Fix this by returning IRQ_HANDLED immediately after the error print.

Additionally, the handler returns IRQ_HANDLED for genuinely unknown
interrupts. This masks false interrupts and prevents the kernel from
detecting interrupts. Return IRQ_NONE instead for unhandled
interrupts.

Cc: stable@vger.kernel.org
Fixes: 48fe583fe5417 ("crypto: amlogic - Add crypto accelerator for amlogic GXL")
Signed-off-by: Mohamad Raizudeen <raizudeen.kerneldev@gmail.com>
---
 drivers/crypto/amlogic/amlogic-gxl-core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/crypto/amlogic/amlogic-gxl-core.c b/drivers/crypto/amlogic/amlogic-gxl-core.c
index 6cb33949915f..302b398405e2 100644
--- a/drivers/crypto/amlogic/amlogic-gxl-core.c
+++ b/drivers/crypto/amlogic/amlogic-gxl-core.c
@@ -38,11 +38,12 @@ static irqreturn_t meson_irq_handler(int irq, void *data)
 				return IRQ_HANDLED;
 			}
 			dev_err(mc->dev, "%s %d Got irq for flow %d but ctrl is empty\n", __func__, irq, flow);
+			return IRQ_HANDLED; 
 		}
 	}
 
 	dev_err(mc->dev, "%s %d from unknown irq\n", __func__, irq);
-	return IRQ_HANDLED;
+	return IRQ_NONE;
 }
 
 static struct meson_alg_template mc_algs[] = {
-- 
2.53.0


             reply	other threads:[~2026-09-08 16:01 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-08 16:01 Mohamad Raizudeen [this message]
2026-09-08 16:01 ` [PATCH] crypto: amlogic: Fix IRQ handler return value and fallthrough logic Mohamad Raizudeen
2026-09-08 16:14 ` sashiko-bot
2026-09-18  8:52 ` Herbert Xu
2026-09-18  8:52   ` Herbert Xu
2026-09-18  9:48   ` Mohamad Raizudeen
2026-09-18  9:48     ` Mohamad Raizudeen

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20260908160120.4805-1-raizudeen.kerneldev@gmail.com \
    --to=raizudeen.kerneldev@gmail.com \
    --cc=clabbe@baylibre.com \
    --cc=davem@davemloft.net \
    --cc=herbert@gondor.apana.org.au \
    --cc=jkoolstra@xs4all.nl \
    --cc=linux-amlogic@lists.infradead.org \
    --cc=linux-crypto@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=me@brighamcampbell.com \
    --cc=skhan@linuxfoundation.org \
    --cc=stable@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.