From: Frank Li Frank.Li@nxp.com
stable inclusion from stable-v6.6.33 commit 20da5bfd669b402d87e9fb165a25b0e1493981fb category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IAD6H2
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit 7f3d633b460be5553a65a247def5426d16805e72 ]
svc_i3c_master_xfer() returns error ENXIO if an In-Band Interrupt (IBI) occurs when the host starts the frame.
Change error code to EAGAIN to inform the client driver that this situation has occurred and to try again sometime later.
Fixes: 5e5e3c92e748 ("i3c: master: svc: fix wrong data return when IBI happen during start frame") Signed-off-by: Frank Li Frank.Li@nxp.com Reviewed-by: Miquel Raynal miquel.raynal@bootlin.com Link: https://lore.kernel.org/r/20240506164009.21375-2-Frank.Li@nxp.com Signed-off-by: Alexandre Belloni alexandre.belloni@bootlin.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Wang Hai wanghai38@huawei.com --- drivers/i3c/master/svc-i3c-master.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/i3c/master/svc-i3c-master.c b/drivers/i3c/master/svc-i3c-master.c index 3966924d1066..e18bf9ca8519 100644 --- a/drivers/i3c/master/svc-i3c-master.c +++ b/drivers/i3c/master/svc-i3c-master.c @@ -1065,7 +1065,7 @@ static int svc_i3c_master_xfer(struct svc_i3c_master *master, * and yield the above events handler. */ if (SVC_I3C_MSTATUS_IBIWON(reg)) { - ret = -ENXIO; + ret = -EAGAIN; *actual_len = 0; goto emit_stop; }