[PATCH net-next v3] net: davicom: Propagate wakeup IRQ errors

From: bui duc phuc <redacted>

The wakeup IRQ is optional, but errors from platform_get_irq_optional()
are currently ignored. Propagate errors from the IRQ lookup, except
-ENXIO which indicates that the optional IRQ is not available.

Found by manual code inspection.

Signed-off-by: bui duc phuc <redacted>
---

Changes in v2:
 - Add a Fixes: tag.
Changes in v3:
 - Remove the goto statements for the error paths in request_irq() 
   and irq_set_irq_wake().
 - Drop the Fixes: tag as this patch is intended for net-next.

 drivers/net/ethernet/davicom/dm9000.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/davicom/dm9000.c b/drivers/net/ethernet/davicom/dm9000.c
index b87eaf0c250c..e294b365eb06 100644
--- a/drivers/net/ethernet/davicom/dm9000.c
+++ b/drivers/net/ethernet/davicom/dm9000.c

@@ -1511,7 +1511,11 @@ dm9000_probe(struct platform_device *pdev)
 	}
 
 	db->irq_wake = platform_get_irq_optional(pdev, 1);
-	if (db->irq_wake >= 0) {
+	if (db->irq_wake < 0 && db->irq_wake != -ENXIO) {
+		ret = db->irq_wake;
+		goto out;
+	}
+	if (db->irq_wake > 0) {
 		dev_dbg(db->dev, "wakeup irq %d\n", db->irq_wake);
 
 		ret = request_irq(db->irq_wake, dm9000_wol_interrupt,

-- 
2.43.0

On Wed, Sep 09, 2026 at 11:57:37AM +0700, phucduc.bui@gmail.com wrote:

From: bui duc phuc <redacted>

The wakeup IRQ is optional, but errors from platform_get_irq_optional()
are currently ignored. Propagate errors from the IRQ lookup, except
-ENXIO which indicates that the optional IRQ is not available.

Found by manual code inspection.

Signed-off-by: bui duc phuc <redacted>
---

Changes in v2:
 - Add a Fixes: tag.
Changes in v3:
 - Remove the goto statements for the error paths in request_irq() 
   and irq_set_irq_wake().
 - Drop the Fixes: tag as this patch is intended for net-next.

Reviewed-by: Simon Horman <horms@kernel.org>

Hello:

This patch was applied to netdev/net-next.git (main)
by Jakub Kicinski [off-list ref]:

On Wed,  9 Sep 2026 11:57:37 +0700 you wrote:

From: bui duc phuc <redacted>

The wakeup IRQ is optional, but errors from platform_get_irq_optional()
are currently ignored. Propagate errors from the IRQ lookup, except
-ENXIO which indicates that the optional IRQ is not available.

Found by manual code inspection.

[...]

Here is the summary with links:
  - [net-next,v3] net: davicom: Propagate wakeup IRQ errors
    https://git.kernel.org/netdev/net-next/c/75a73afd0b32

You are awesome, thank you!
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