]> git.ipfire.org Git - thirdparty/kernel/linux.git/commit
i3c: dw-i3c-master: Set SIR_REJECT in DAT on device attach and reattach
authorAdrian Ng Ho Yin <adrianhoyin.ng@altera.com>
Fri, 13 Feb 2026 06:00:48 +0000 (14:00 +0800)
committerAlexandre Belloni <alexandre.belloni@bootlin.com>
Wed, 11 Mar 2026 21:50:29 +0000 (22:50 +0100)
commitf311a05784634febd299f03476b80f3f18489767
treece814769a0751fecc59354a70b584cfd73e8ae36
parentf26ecaa0f0abfe5db173416214098a00d3b7db79
i3c: dw-i3c-master: Set SIR_REJECT in DAT on device attach and reattach

The DesignWare I3C master controller ACKs IBIs as soon as a valid
Device Address Table (DAT) entry is present. This can create a race
between device attachment (after DAA) and the point where the client
driver enables IBIs via i3c_device_enable_ibi().

Set DEV_ADDR_TABLE_SIR_REJECT in the DAT entry during
attach_i3c_dev() and reattach_i3c_dev() so that IBIs are rejected
by default. The bit is managed thereafter by the existing
dw_i3c_master_set_sir_enabled() function, which clears it in
enable_ibi() after ENEC is issued, and restores it in disable_ibi()
after DISEC.

Fixes: 1dd728f5d4d4 ("i3c: master: Add driver for Synopsys DesignWare IP")
Signed-off-by: Adrian Ng Ho Yin <adrianhoyin.ng@altera.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/53f5b8cbdd8af789ec38b95b02873f32f9182dd6.1770962368.git.adrianhoyin.ng@altera.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
drivers/i3c/master/dw-i3c-master.c