On 2020-09-22 01:07, Loic Poulain wrote:
Move irq number check early in mhi_register_controller along
with other mandatory parameters checking.
Signed-off-by: Loic Poulain <loic.poulain@xxxxxxxxxx>
---
drivers/bus/mhi/core/init.c | 2 +-
drivers/bus/mhi/core/pm.c | 3 ---
2 files changed, 1 insertion(+), 4 deletions(-)
diff --git a/drivers/bus/mhi/core/init.c b/drivers/bus/mhi/core/init.c
index ca08437..34f9ae3 100644
--- a/drivers/bus/mhi/core/init.c
+++ b/drivers/bus/mhi/core/init.c
@@ -871,7 +871,7 @@ int mhi_register_controller(struct mhi_controller
*mhi_cntrl,
if (!mhi_cntrl->runtime_get || !mhi_cntrl->runtime_put ||
!mhi_cntrl->status_cb || !mhi_cntrl->read_reg ||
- !mhi_cntrl->write_reg)
+ !mhi_cntrl->write_reg || !mhi_cntrl->nr_irqs)
return -EINVAL;
ret = parse_config(mhi_cntrl, config);
diff --git a/drivers/bus/mhi/core/pm.c b/drivers/bus/mhi/core/pm.c
index 3de7b16..07efdbc 100644
--- a/drivers/bus/mhi/core/pm.c
+++ b/drivers/bus/mhi/core/pm.c
@@ -918,9 +918,6 @@ int mhi_async_power_up(struct mhi_controller
*mhi_cntrl)
dev_info(dev, "Requested to power ON\n");
- if (mhi_cntrl->nr_irqs < 1)
- return -EINVAL;
-
/* Supply default wake routines if not provided by controller driver
*/
if (!mhi_cntrl->wake_get || !mhi_cntrl->wake_put ||
!mhi_cntrl->wake_toggle) {
Hi Loic,
Can you please add a Suggested-by: Bhaumik Bhatt <bbhatt@xxxxxxxxxxxxxx>
tag with my name?
Also, I made this patch myself too but you can submit it. It'd be nice
to add some more
details in the commit text.
Mine goes like this:
bus: mhi: core: Check for IRQ availability during registration
Current design allows a controller to register with MHI successfully
without the need to have any IRQs available for use. If no IRQs are
available, power up requests to MHI can fail after a successful
registration with MHI. Improve the design by checking for the number
of IRQs available sooner within the mhi_regsiter_controller() API as
it is required to be specified by the controller.
Thanks,
Bhaumik
