Messages in this thread Patch in this message | | | From | Clark Wang <> | Subject | [PATCH V5 8/8] i3c: master: svc: enable the interrupt in the enable ibi function | Date | Mon, 27 Dec 2021 15:45:29 +0800 |
| |
If enable interrupt in the svc_i3c_master_bus_init() but do not call enable ibi in the device driver, it will cause a kernel dump in the svc_i3c_master_handle_ibi() when a slave start occurs on the i3c bus, because the data->ibi_pool is not initialized. So only enable the interrupt in svc_i3c_master_enable_ibi() function.
Signed-off-by: Clark Wang <xiaoning.wang@nxp.com> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> --- V5: - Yes, it actually happened when I try the lsmdo6d sensor's ibi function. - add Miquel's reviewed tag --- drivers/i3c/master/svc-i3c-master.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/i3c/master/svc-i3c-master.c b/drivers/i3c/master/svc-i3c-master.c index 3bc81ef95334..7550dad64ecf 100644 --- a/drivers/i3c/master/svc-i3c-master.c +++ b/drivers/i3c/master/svc-i3c-master.c @@ -569,8 +569,6 @@ static int svc_i3c_master_bus_init(struct i3c_master_controller *m) if (ret) goto rpm_out; - svc_i3c_master_enable_interrupts(master, SVC_I3C_MINT_SLVSTART); - rpm_out: pm_runtime_mark_last_busy(master->dev); pm_runtime_put_autosuspend(master->dev); @@ -1400,6 +1398,8 @@ static int svc_i3c_master_enable_ibi(struct i3c_dev_desc *dev) return ret; } + svc_i3c_master_enable_interrupts(master, SVC_I3C_MINT_SLVSTART); + return i3c_master_enec_locked(m, dev->info.dyn_addr, I3C_CCC_EVENT_SIR); } @@ -1409,6 +1409,8 @@ static int svc_i3c_master_disable_ibi(struct i3c_dev_desc *dev) struct svc_i3c_master *master = to_svc_i3c_master(m); int ret; + svc_i3c_master_disable_interrupts(master); + ret = i3c_master_disec_locked(m, dev->info.dyn_addr, I3C_CCC_EVENT_SIR); pm_runtime_mark_last_busy(master->dev); -- 2.25.1
| |