| Message ID | 20240424190030.857632-1-Frank.Li@nxp.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [1/2] i3c: master: svc: change ENXIO to EAGAIN when IBI occurs during start frame | expand |
Hi Frank, Frank.Li@nxp.com wrote on Wed, 24 Apr 2024 15:00:29 -0400: > 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. This changes slightly the user API, but feels legitimate at the same time. Maybe a comment somewhere in the i3c headers to clarify this possibility might be welcome? > Fixes: 5e5e3c92e748 ("i3c: master: svc: fix wrong data return when IBI happen during start frame") > Signed-off-by: Frank Li <Frank.Li@nxp.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 5ee4db68988e2..a2298ab460a37 100644 > --- a/drivers/i3c/master/svc-i3c-master.c > +++ b/drivers/i3c/master/svc-i3c-master.c > @@ -1080,7 +1080,7 @@ 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; > } Thanks, Miquèl
diff --git a/drivers/i3c/master/svc-i3c-master.c b/drivers/i3c/master/svc-i3c-master.c index 5ee4db68988e2..a2298ab460a37 100644 --- a/drivers/i3c/master/svc-i3c-master.c +++ b/drivers/i3c/master/svc-i3c-master.c @@ -1080,7 +1080,7 @@ 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; }
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> --- drivers/i3c/master/svc-i3c-master.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)