6.17-stable review patch. If anyone has any objections, please let me know.
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From: Praveen Talari praveen.talari@oss.qualcomm.com
[ Upstream commit 9c92d36b0b1ea8b2a19dbe0416434f3491dbfaaf ]
For BT use cases, pins are configured with pull-up state in sleep state to avoid noise. If IRQ type is configured as level high and the GPIO line is also in a high state, it causes continuous interrupt assertions leading to an IRQ storm when wakeup irq enables at system suspend/runtime suspend.
Switching to edge-triggered interrupt (IRQ_TYPE_EDGE_FALLING) resolves this by only triggering on state transitions (high-to-low) rather than maintaining sensitivity to the static level state, effectively preventing the continuous interrupt condition and eliminating the wakeup IRQ storm.
Fixes: 9380e0a1d449 ("arm64: dts: qcom: qrb2210-rb1: add Bluetooth support") Signed-off-by: Praveen Talari praveen.talari@oss.qualcomm.com Reviewed-by: Konrad Dybcio konrad.dybcio@oss.qualcomm.com Link: https://lore.kernel.org/r/20251110101043.2108414-2-praveen.talari@oss.qualco... Signed-off-by: Bjorn Andersson andersson@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- arch/arm64/boot/dts/qcom/qrb2210-rb1.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/qcom/qrb2210-rb1.dts b/arch/arm64/boot/dts/qcom/qrb2210-rb1.dts index b2e0fc5501c1e..af29c7ed7a685 100644 --- a/arch/arm64/boot/dts/qcom/qrb2210-rb1.dts +++ b/arch/arm64/boot/dts/qcom/qrb2210-rb1.dts @@ -648,7 +648,7 @@ key_volp_n: key-volp-n-state { &uart3 { /delete-property/ interrupts; interrupts-extended = <&intc GIC_SPI 330 IRQ_TYPE_LEVEL_HIGH>, - <&tlmm 11 IRQ_TYPE_LEVEL_HIGH>; + <&tlmm 11 IRQ_TYPE_EDGE_FALLING>; pinctrl-0 = <&uart3_default>; pinctrl-1 = <&uart3_sleep>; pinctrl-names = "default", "sleep";