* [PATCH] i3c: dw: Initialize spinlock to avoid upsetting lockdep
@ 2026-01-15 13:25 Fredrik Markstrom via B4 Relay
2026-01-15 16:42 ` Frank Li
0 siblings, 1 reply; 2+ messages in thread
From: Fredrik Markstrom via B4 Relay @ 2026-01-15 13:25 UTC (permalink / raw)
To: Alexandre Belloni, Frank Li, Joel Stanley, Jeremy Kerr
Cc: linux-i3c, linux-kernel, Jani Nurminen, Fredrik Markstrom,
Ivar Holmqvist
From: Fredrik Markstrom <fredrik.markstrom@est.tech>
Fixes: e389b1d72a624 ("i3c: dw: Add support for in-band interrupts")
Suggested-by: Jani Nurminen <jani.nurminen@windriver.com>
Signed-off-by: Fredrik Markstrom <fredrik.markstrom@est.tech>
Reviewed-by: Ivar Holmqvist <ivar.holmqvist@est.tech>
---
drivers/i3c/master/dw-i3c-master.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/i3c/master/dw-i3c-master.c b/drivers/i3c/master/dw-i3c-master.c
index 889e2ed5bc83..d5b070404056 100644
--- a/drivers/i3c/master/dw-i3c-master.c
+++ b/drivers/i3c/master/dw-i3c-master.c
@@ -1570,6 +1570,8 @@ int dw_i3c_common_probe(struct dw_i3c_master *master,
spin_lock_init(&master->xferqueue.lock);
INIT_LIST_HEAD(&master->xferqueue.list);
+ spin_lock_init(&master->devs_lock);
+
writel(INTR_ALL, master->regs + INTR_STATUS);
irq = platform_get_irq(pdev, 0);
ret = devm_request_irq(&pdev->dev, irq,
---
base-commit: 0f61b1860cc3f52aef9036d7235ed1f017632193
change-id: 20260115-i3c_dw_initialize_spinlock-d878212a846b
Best regards,
--
Fredrik Markstrom <fredrik.markstrom@est.tech>
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^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] i3c: dw: Initialize spinlock to avoid upsetting lockdep
2026-01-15 13:25 [PATCH] i3c: dw: Initialize spinlock to avoid upsetting lockdep Fredrik Markstrom via B4 Relay
@ 2026-01-15 16:42 ` Frank Li
0 siblings, 0 replies; 2+ messages in thread
From: Frank Li @ 2026-01-15 16:42 UTC (permalink / raw)
To: Fredrik Markstrom
Cc: Alexandre Belloni, Joel Stanley, Jeremy Kerr, linux-i3c,
linux-kernel, Jani Nurminen, Ivar Holmqvist
On Thu, Jan 15, 2026 at 02:25:29PM +0100, Fredrik Markstrom wrote:
Need context here. You can duplicate subject.
Initialize spinlock to avoid upsetting lockdep.
Frank
> Fixes: e389b1d72a624 ("i3c: dw: Add support for in-band interrupts")
> Suggested-by: Jani Nurminen <jani.nurminen@windriver.com>
> Signed-off-by: Fredrik Markstrom <fredrik.markstrom@est.tech>
> Reviewed-by: Ivar Holmqvist <ivar.holmqvist@est.tech>
> ---
> drivers/i3c/master/dw-i3c-master.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/i3c/master/dw-i3c-master.c b/drivers/i3c/master/dw-i3c-master.c
> index 889e2ed5bc83..d5b070404056 100644
> --- a/drivers/i3c/master/dw-i3c-master.c
> +++ b/drivers/i3c/master/dw-i3c-master.c
> @@ -1570,6 +1570,8 @@ int dw_i3c_common_probe(struct dw_i3c_master *master,
> spin_lock_init(&master->xferqueue.lock);
> INIT_LIST_HEAD(&master->xferqueue.list);
>
> + spin_lock_init(&master->devs_lock);
> +
> writel(INTR_ALL, master->regs + INTR_STATUS);
> irq = platform_get_irq(pdev, 0);
> ret = devm_request_irq(&pdev->dev, irq,
>
> ---
> base-commit: 0f61b1860cc3f52aef9036d7235ed1f017632193
> change-id: 20260115-i3c_dw_initialize_spinlock-d878212a846b
>
> Best regards,
> --
> Fredrik Markstrom <fredrik.markstrom@est.tech>
>
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