* [PATCH] media: ipu-bridge: fix error code in ipu_bridge_init()
@ 2024-05-10 15:10 Dan Carpenter
2024-05-10 15:18 ` Andy Shevchenko
0 siblings, 1 reply; 5+ messages in thread
From: Dan Carpenter @ 2024-05-10 15:10 UTC (permalink / raw)
To: Bingbu Cao
Cc: Mauro Carvalho Chehab, Sakari Ailus, Hans de Goede,
Andy Shevchenko, Daniel Scally, linux-media, linux-kernel,
kernel-janitors
Return -EINVAL if "bridge->n_sensors == 0". Don't return success.
Fixes: 881ca25978c6 ("media: ipu3-cio2: rename cio2 bridge to ipu bridge and move out of ipu3")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
---
drivers/media/pci/intel/ipu-bridge.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/media/pci/intel/ipu-bridge.c b/drivers/media/pci/intel/ipu-bridge.c
index 61750cc98d70..a009ee73e26f 100644
--- a/drivers/media/pci/intel/ipu-bridge.c
+++ b/drivers/media/pci/intel/ipu-bridge.c
@@ -839,8 +839,10 @@ int ipu_bridge_init(struct device *dev,
bridge->data_lanes[i] = i + 1;
ret = ipu_bridge_connect_sensors(bridge);
- if (ret || bridge->n_sensors == 0)
+ if (ret || bridge->n_sensors == 0) {
+ ret = ret ?: -EINVAL;
goto err_unregister_ipu;
+ }
dev_info(dev, "Connected %d cameras\n", bridge->n_sensors);
--
2.43.0
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH] media: ipu-bridge: fix error code in ipu_bridge_init()
2024-05-10 15:10 [PATCH] media: ipu-bridge: fix error code in ipu_bridge_init() Dan Carpenter
@ 2024-05-10 15:18 ` Andy Shevchenko
2024-05-10 15:27 ` Dan Carpenter
0 siblings, 1 reply; 5+ messages in thread
From: Andy Shevchenko @ 2024-05-10 15:18 UTC (permalink / raw)
To: Dan Carpenter
Cc: Bingbu Cao, Mauro Carvalho Chehab, Sakari Ailus, Hans de Goede,
Daniel Scally, linux-media, linux-kernel, kernel-janitors
On Fri, May 10, 2024 at 06:10:37PM +0300, Dan Carpenter wrote:
> Return -EINVAL if "bridge->n_sensors == 0". Don't return success.
...
> ret = ipu_bridge_connect_sensors(bridge);
> - if (ret || bridge->n_sensors == 0)
> + if (ret || bridge->n_sensors == 0) {
> + ret = ret ?: -EINVAL;
> goto err_unregister_ipu;
> + }
I would split:
ret = ipu_bridge_connect_sensors(bridge);
if (ret)
goto err_unregister_ipu;
if (bridge->n_sensors == 0) {
ret = -EINVAL;
goto err_unregister_ipu;
}
--
With Best Regards,
Andy Shevchenko
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] media: ipu-bridge: fix error code in ipu_bridge_init()
2024-05-10 15:18 ` Andy Shevchenko
@ 2024-05-10 15:27 ` Dan Carpenter
2024-05-10 15:36 ` Andy Shevchenko
0 siblings, 1 reply; 5+ messages in thread
From: Dan Carpenter @ 2024-05-10 15:27 UTC (permalink / raw)
To: Andy Shevchenko
Cc: Bingbu Cao, Mauro Carvalho Chehab, Sakari Ailus, Hans de Goede,
Daniel Scally, linux-media, linux-kernel, kernel-janitors
On Fri, May 10, 2024 at 06:18:22PM +0300, Andy Shevchenko wrote:
> On Fri, May 10, 2024 at 06:10:37PM +0300, Dan Carpenter wrote:
> > Return -EINVAL if "bridge->n_sensors == 0". Don't return success.
>
> ...
>
> > ret = ipu_bridge_connect_sensors(bridge);
> > - if (ret || bridge->n_sensors == 0)
> > + if (ret || bridge->n_sensors == 0) {
> > + ret = ret ?: -EINVAL;
> > goto err_unregister_ipu;
> > + }
>
> I would split:
>
> ret = ipu_bridge_connect_sensors(bridge);
> if (ret)
> goto err_unregister_ipu;
>
> if (bridge->n_sensors == 0) {
> ret = -EINVAL;
> goto err_unregister_ipu;
> }
It's always hard to know which way to go on these... I wrote it that
way in my first draft. It's my prefered way as well but not everyone
agrees. I'll resend.
regards,
dan carpenter
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] media: ipu-bridge: fix error code in ipu_bridge_init()
2024-05-10 15:27 ` Dan Carpenter
@ 2024-05-10 15:36 ` Andy Shevchenko
2024-05-10 15:42 ` Dan Carpenter
0 siblings, 1 reply; 5+ messages in thread
From: Andy Shevchenko @ 2024-05-10 15:36 UTC (permalink / raw)
To: Dan Carpenter
Cc: Bingbu Cao, Mauro Carvalho Chehab, Sakari Ailus, Hans de Goede,
Daniel Scally, linux-media, linux-kernel, kernel-janitors
On Fri, May 10, 2024 at 06:27:30PM +0300, Dan Carpenter wrote:
> On Fri, May 10, 2024 at 06:18:22PM +0300, Andy Shevchenko wrote:
> > On Fri, May 10, 2024 at 06:10:37PM +0300, Dan Carpenter wrote:
> > > Return -EINVAL if "bridge->n_sensors == 0". Don't return success.
...
> > > ret = ipu_bridge_connect_sensors(bridge);
> > > - if (ret || bridge->n_sensors == 0)
> > > + if (ret || bridge->n_sensors == 0) {
> > > + ret = ret ?: -EINVAL;
> > > goto err_unregister_ipu;
> > > + }
> >
> > I would split:
> >
> > ret = ipu_bridge_connect_sensors(bridge);
> > if (ret)
> > goto err_unregister_ipu;
> >
> > if (bridge->n_sensors == 0) {
> > ret = -EINVAL;
> > goto err_unregister_ipu;
> > }
>
> It's always hard to know which way to go on these... I wrote it that
> way in my first draft. It's my prefered way as well but not everyone
> agrees. I'll resend.
Is the generated assembly the same?
--
With Best Regards,
Andy Shevchenko
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] media: ipu-bridge: fix error code in ipu_bridge_init()
2024-05-10 15:36 ` Andy Shevchenko
@ 2024-05-10 15:42 ` Dan Carpenter
0 siblings, 0 replies; 5+ messages in thread
From: Dan Carpenter @ 2024-05-10 15:42 UTC (permalink / raw)
To: Andy Shevchenko
Cc: Bingbu Cao, Mauro Carvalho Chehab, Sakari Ailus, Hans de Goede,
Daniel Scally, linux-media, linux-kernel, kernel-janitors
On Fri, May 10, 2024 at 06:36:36PM +0300, Andy Shevchenko wrote:
> On Fri, May 10, 2024 at 06:27:30PM +0300, Dan Carpenter wrote:
> > On Fri, May 10, 2024 at 06:18:22PM +0300, Andy Shevchenko wrote:
> > > On Fri, May 10, 2024 at 06:10:37PM +0300, Dan Carpenter wrote:
> > > > Return -EINVAL if "bridge->n_sensors == 0". Don't return success.
>
> ...
>
> > > > ret = ipu_bridge_connect_sensors(bridge);
> > > > - if (ret || bridge->n_sensors == 0)
> > > > + if (ret || bridge->n_sensors == 0) {
> > > > + ret = ret ?: -EINVAL;
> > > > goto err_unregister_ipu;
> > > > + }
> > >
> > > I would split:
> > >
> > > ret = ipu_bridge_connect_sensors(bridge);
> > > if (ret)
> > > goto err_unregister_ipu;
> > >
> > > if (bridge->n_sensors == 0) {
> > > ret = -EINVAL;
> > > goto err_unregister_ipu;
> > > }
> >
> > It's always hard to know which way to go on these... I wrote it that
> > way in my first draft. It's my prefered way as well but not everyone
> > agrees. I'll resend.
>
> Is the generated assembly the same?
Yeah, it does.
regards,
dan carpenter
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2024-05-10 15:42 UTC | newest]
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2024-05-10 15:10 [PATCH] media: ipu-bridge: fix error code in ipu_bridge_init() Dan Carpenter
2024-05-10 15:18 ` Andy Shevchenko
2024-05-10 15:27 ` Dan Carpenter
2024-05-10 15:36 ` Andy Shevchenko
2024-05-10 15:42 ` Dan Carpenter
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