* [PATCH] bus: sunxi-rsb: Fix the return value of sunxi_rsb_device_create()
@ 2022-04-21 14:35 ` Christophe JAILLET
0 siblings, 0 replies; 6+ messages in thread
From: Christophe JAILLET @ 2022-04-21 14:35 UTC (permalink / raw)
To: Chen-Yu Tsai, Jernej Skrabec, Samuel Holland, Mark Brown,
Maxime Ripard, Arnd Bergmann, Olof Johansson
Cc: linux-kernel, kernel-janitors, Christophe JAILLET,
linux-arm-kernel, linux-sunxi
This code is really spurious.
It always returns an ERR_PTR, even when err is known to be 0 and calls
put_device() after a successful device_register() call.
It is likely that the return statement in the normal path is missing.
Add 'return rdev;' to fix it.
Fixes: d787dcdb9c8f ("bus: sunxi-rsb: Add driver for Allwinner Reduced Serial Bus")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
This patch is completely speculative and compile tested only.
---
drivers/bus/sunxi-rsb.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/bus/sunxi-rsb.c b/drivers/bus/sunxi-rsb.c
index 4566e730ef2b..60b082fe2ed0 100644
--- a/drivers/bus/sunxi-rsb.c
+++ b/drivers/bus/sunxi-rsb.c
@@ -227,6 +227,8 @@ static struct sunxi_rsb_device *sunxi_rsb_device_create(struct sunxi_rsb *rsb,
dev_dbg(&rdev->dev, "device %s registered\n", dev_name(&rdev->dev));
+ return rdev;
+
err_device_add:
put_device(&rdev->dev);
--
2.32.0
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH] bus: sunxi-rsb: Fix the return value of sunxi_rsb_device_create()
@ 2022-04-21 14:35 ` Christophe JAILLET
0 siblings, 0 replies; 6+ messages in thread
From: Christophe JAILLET @ 2022-04-21 14:35 UTC (permalink / raw)
To: Chen-Yu Tsai, Jernej Skrabec, Samuel Holland, Mark Brown,
Maxime Ripard, Arnd Bergmann, Olof Johansson
Cc: linux-kernel, kernel-janitors, Christophe JAILLET,
linux-arm-kernel, linux-sunxi
This code is really spurious.
It always returns an ERR_PTR, even when err is known to be 0 and calls
put_device() after a successful device_register() call.
It is likely that the return statement in the normal path is missing.
Add 'return rdev;' to fix it.
Fixes: d787dcdb9c8f ("bus: sunxi-rsb: Add driver for Allwinner Reduced Serial Bus")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
This patch is completely speculative and compile tested only.
---
drivers/bus/sunxi-rsb.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/bus/sunxi-rsb.c b/drivers/bus/sunxi-rsb.c
index 4566e730ef2b..60b082fe2ed0 100644
--- a/drivers/bus/sunxi-rsb.c
+++ b/drivers/bus/sunxi-rsb.c
@@ -227,6 +227,8 @@ static struct sunxi_rsb_device *sunxi_rsb_device_create(struct sunxi_rsb *rsb,
dev_dbg(&rdev->dev, "device %s registered\n", dev_name(&rdev->dev));
+ return rdev;
+
err_device_add:
put_device(&rdev->dev);
--
2.32.0
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^ permalink raw reply related [flat|nested] 6+ messages in thread* Re: [PATCH] bus: sunxi-rsb: Fix the return value of sunxi_rsb_device_create()
2022-04-21 14:35 ` Christophe JAILLET
@ 2022-04-23 19:39 ` Samuel Holland
-1 siblings, 0 replies; 6+ messages in thread
From: Samuel Holland @ 2022-04-23 19:39 UTC (permalink / raw)
To: Christophe JAILLET, Chen-Yu Tsai, Jernej Skrabec, Mark Brown,
Maxime Ripard, Arnd Bergmann, Olof Johansson
Cc: linux-kernel, kernel-janitors, linux-arm-kernel, linux-sunxi
On 4/21/22 9:35 AM, Christophe JAILLET wrote:
> This code is really spurious.
> It always returns an ERR_PTR, even when err is known to be 0 and calls
> put_device() after a successful device_register() call.
>
> It is likely that the return statement in the normal path is missing.
> Add 'return rdev;' to fix it.
Thanks for the patch. This definitely looks to be the case.
> Fixes: d787dcdb9c8f ("bus: sunxi-rsb: Add driver for Allwinner Reduced Serial Bus")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Samuel Holland <samuel@sholland.org>
Tested-by: Samuel Holland <samuel@sholland.org>
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [PATCH] bus: sunxi-rsb: Fix the return value of sunxi_rsb_device_create()
@ 2022-04-23 19:39 ` Samuel Holland
0 siblings, 0 replies; 6+ messages in thread
From: Samuel Holland @ 2022-04-23 19:39 UTC (permalink / raw)
To: Christophe JAILLET, Chen-Yu Tsai, Jernej Skrabec, Mark Brown,
Maxime Ripard, Arnd Bergmann, Olof Johansson
Cc: linux-kernel, kernel-janitors, linux-arm-kernel, linux-sunxi
On 4/21/22 9:35 AM, Christophe JAILLET wrote:
> This code is really spurious.
> It always returns an ERR_PTR, even when err is known to be 0 and calls
> put_device() after a successful device_register() call.
>
> It is likely that the return statement in the normal path is missing.
> Add 'return rdev;' to fix it.
Thanks for the patch. This definitely looks to be the case.
> Fixes: d787dcdb9c8f ("bus: sunxi-rsb: Add driver for Allwinner Reduced Serial Bus")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Samuel Holland <samuel@sholland.org>
Tested-by: Samuel Holland <samuel@sholland.org>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: Re: [PATCH] bus: sunxi-rsb: Fix the return value of sunxi_rsb_device_create()
2022-04-23 19:39 ` Samuel Holland
@ 2022-04-25 17:31 ` Jernej Škrabec
-1 siblings, 0 replies; 6+ messages in thread
From: Jernej Škrabec @ 2022-04-25 17:31 UTC (permalink / raw)
To: Christophe JAILLET, Chen-Yu Tsai, Mark Brown, Maxime Ripard,
Arnd Bergmann, Olof Johansson, Samuel Holland
Cc: linux-kernel, kernel-janitors, linux-arm-kernel, linux-sunxi
Dne sobota, 23. april 2022 ob 21:39:45 CEST je Samuel Holland napisal(a):
> On 4/21/22 9:35 AM, Christophe JAILLET wrote:
> > This code is really spurious.
> > It always returns an ERR_PTR, even when err is known to be 0 and calls
> > put_device() after a successful device_register() call.
> >
> > It is likely that the return statement in the normal path is missing.
> > Add 'return rdev;' to fix it.
>
> Thanks for the patch. This definitely looks to be the case.
>
> > Fixes: d787dcdb9c8f ("bus: sunxi-rsb: Add driver for Allwinner Reduced
Serial Bus")
> > Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
>
> Reviewed-by: Samuel Holland <samuel@sholland.org>
> Tested-by: Samuel Holland <samuel@sholland.org>
>
Applied to sunxi/fixes-for-5.18, thanks!
Best regards,
Jernej
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: Re: [PATCH] bus: sunxi-rsb: Fix the return value of sunxi_rsb_device_create()
@ 2022-04-25 17:31 ` Jernej Škrabec
0 siblings, 0 replies; 6+ messages in thread
From: Jernej Škrabec @ 2022-04-25 17:31 UTC (permalink / raw)
To: Christophe JAILLET, Chen-Yu Tsai, Mark Brown, Maxime Ripard,
Arnd Bergmann, Olof Johansson, Samuel Holland
Cc: linux-kernel, kernel-janitors, linux-arm-kernel, linux-sunxi
Dne sobota, 23. april 2022 ob 21:39:45 CEST je Samuel Holland napisal(a):
> On 4/21/22 9:35 AM, Christophe JAILLET wrote:
> > This code is really spurious.
> > It always returns an ERR_PTR, even when err is known to be 0 and calls
> > put_device() after a successful device_register() call.
> >
> > It is likely that the return statement in the normal path is missing.
> > Add 'return rdev;' to fix it.
>
> Thanks for the patch. This definitely looks to be the case.
>
> > Fixes: d787dcdb9c8f ("bus: sunxi-rsb: Add driver for Allwinner Reduced
Serial Bus")
> > Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
>
> Reviewed-by: Samuel Holland <samuel@sholland.org>
> Tested-by: Samuel Holland <samuel@sholland.org>
>
Applied to sunxi/fixes-for-5.18, thanks!
Best regards,
Jernej
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2022-04-25 17:32 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2022-04-21 14:35 [PATCH] bus: sunxi-rsb: Fix the return value of sunxi_rsb_device_create() Christophe JAILLET
2022-04-21 14:35 ` Christophe JAILLET
2022-04-23 19:39 ` Samuel Holland
2022-04-23 19:39 ` Samuel Holland
2022-04-25 17:31 ` Jernej Škrabec
2022-04-25 17:31 ` Jernej Škrabec
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