linux-kernel - [PATCH v2 0/2] i3c: dw-i3c-master: scoped spinlock guards and SIR reject fix

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Message-ID: <cover.1769151395.git.adrianhoyin.ng@altera.com>
Date: Fri, 23 Jan 2026 15:35:10 +0800
From: adrianhoyin.ng@...era.com
To: alexandre.belloni@...tlin.com,
	Frank.Li@....com,
	linux-i3c@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Cc: adrianhoyin.ng@...era.com
Subject: [PATCH v2 0/2] i3c: dw-i3c-master: scoped spinlock guards and SIR reject fix

From: Adrian Ng Ho Yin <adrianhoyin.ng@...era.com>

This patchset replaces open-coded spin_lock_irqsave()/spin_unlock_irqrestore()
pairs with scoped spinlock guards to reduce boilerplate and ensure correct
lock release on scope exit.

In a subsequent patch it fixes the SIR reject bit mapping used for IBI
handling. The IBI_SIR_REQ_REJECT register is indexed by a folded form of
the 7-bit dynamic address, but the driver currently uses the device table
index. This can result in IBIs being rejected or accepted for the wrong
device. The patch derives the bit index directly from the dynamic address
as defined by the controller.

---
changelog
v1->v2:
- Add implementation to use scoped spinlock guards to ensure correct lock release.
- Update remove DYN_ADDR_HI_BITS macro definition and update MASK to use index directly.
---

Adrian Ng Ho Yin (2):
  i3c: dw-i3c-master: convert spinlock usage to scoped guards
  i3c: dw-i3c-master: fix SIR reject bit mapping for dynamic addresses

 drivers/i3c/master/dw-i3c-master.c | 57 ++++++++++++++++--------------
 1 file changed, 30 insertions(+), 27 deletions(-)

-- 
2.49.GIT