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ath79: ignore the abused interrupt-map on PCIe node

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ath79 PCIe interrupt controller has stopped working correctly. This
is because the DT exposing a non-sensical interrupt-map property,
and their drivers relying on the kernel ignoring this property[1].

This patch fixes the PCIe init error:
ath9k 0000:00:00.0: of_irq_parse_pci: failed with rc=-14

Notice:
This is just a workaround, not a fix. PCIe driver and related dts
node need to be rewritten.

[1] https://lore.kernel.org/all/20211201114102.13446-1-maz@kernel.org/

Signed-off-by: Shiji Yang <yangshiji66@qq.com>
This commit is contained in:
Shiji Yang 2023-05-31 08:31:18 +08:00 committed by David Bauer
parent 7189b45784
commit 54758cf24b
1 changed files with 33 additions and 0 deletions
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33
target/linux/ath79/patches-6.1/810-ath79-ignore-the-abused-interrupt-map-on-pcie-node.patch Normal file
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@ -0,0 +1,33 @@
From: Shiji Yang <yangshiji66@outlook.com>
Date: Wed, 31 May 2023 00:15:23 +0000
Subject: [PATCH] ath79: ignore the abused interrupt-map on pcie node
ath79 PCIe interrupt controller has stopped working correctly. This
is because the DT exposing a non-sensical interrupt-map property,
and their drivers relying on the kernel ignoring this property[1].
This patch fix the pcie init error:
ath9k 0000:00:00.0: of_irq_parse_pci: failed with rc=-14
Notice:
This is just a workaround, not a fix. PCIe driver and related dts
node need to be rewritten.
[1] https://lore.kernel.org/all/20211201114102.13446-1-maz@kernel.org/
Signed-off-by: Shiji Yang <yangshiji66@outlook.com>
---
drivers/of/irq.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/of/irq.c
+++ b/drivers/of/irq.c
@@ -86,6 +86,8 @@ EXPORT_SYMBOL_GPL(of_irq_find_parent);
* drawing board.
*/
static const char * const of_irq_imap_abusers[] = {
+ "qca,ar7100-pci",
+ "qcom,ar7240-pci",
"CBEA,platform-spider-pic",
"sti,platform-spider-pic",
"realtek,rtl-intc",