* Fix for fsl_upm
@ 2011-10-27 14:18 Rusev
2011-10-27 18:28 ` Kumar Gala
2011-11-24 7:46 ` Kumar Gala
0 siblings, 2 replies; 3+ messages in thread
From: Rusev @ 2011-10-27 14:18 UTC (permalink / raw)
To: benh, paulus, galak, Shengzhou.Liu, Shaohui.Xie, linuxppc-dev,
linux-kernel
[-- Attachment #1: Type: text/plain, Size: 46 bytes --]
patch is vs. 2.6.39, yet it applied to 3.1
[-- Attachment #2: fsl_lbc.c.patch --]
[-- Type: text/x-patch, Size: 694 bytes --]
Fix of UPM driver for Freescale PowerPC processors
If Freescale LBC driver fails to initialise itself from device tree,
then internal structure is freed only but not NULL-fied.
As result functions fsl_lbc_find() after checking the structure is not NULL are
trying to access device registers.
Signed-off-by: Alexandre Rusev <arusev@dev.rtsoft.ru>
--- linux-2.6.39.old/arch/powerpc/sysdev/fsl_lbc.c 2011-10-27 03:17:28.000000000 +0400
+++ linux-2.6.39/arch/powerpc/sysdev/fsl_lbc.c 2011-10-27 05:06:44.000000000 +0400
@@ -322,6 +322,7 @@ static int __devinit fsl_lbc_ctrl_probe(
err:
iounmap(fsl_lbc_ctrl_dev->regs);
kfree(fsl_lbc_ctrl_dev);
+ fsl_lbc_ctrl_dev = NULL;
return ret;
}
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Fix for fsl_upm
2011-10-27 14:18 Fix for fsl_upm Rusev
@ 2011-10-27 18:28 ` Kumar Gala
2011-11-24 7:46 ` Kumar Gala
1 sibling, 0 replies; 3+ messages in thread
From: Kumar Gala @ 2011-10-27 18:28 UTC (permalink / raw)
To: Rusev; +Cc: Shaohui.Xie, linux-kernel, Shengzhou.Liu, paulus, linuxppc-dev
On Oct 27, 2011, at 9:18 AM, Rusev wrote:
> patch is vs. 2.6.39, yet it applied to 3.1
>=20
>=20
>=20
> Fix of UPM driver for Freescale PowerPC processors
>=20
> If Freescale LBC driver fails to initialise itself from device tree,
> then internal structure is freed only but not NULL-fied.
> As result functions fsl_lbc_find() after checking the structure is not =
NULL are
> trying to access device registers.
>=20
> Signed-off-by: Alexandre Rusev <arusev@dev.rtsoft.ru>=20
> --- linux-2.6.39.old/arch/powerpc/sysdev/fsl_lbc.c 2011-10-27 =
03:17:28.000000000 +0400
> +++ linux-2.6.39/arch/powerpc/sysdev/fsl_lbc.c 2011-10-27 =
05:06:44.000000000 +0400
> @@ -322,6 +322,7 @@ static int __devinit fsl_lbc_ctrl_probe(
> err:
> iounmap(fsl_lbc_ctrl_dev->regs);
> kfree(fsl_lbc_ctrl_dev);
> + fsl_lbc_ctrl_dev =3D NULL;
> return ret;
> }
>=20
Can you send this as a proper patch.
- k
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Fix for fsl_upm
2011-10-27 14:18 Fix for fsl_upm Rusev
2011-10-27 18:28 ` Kumar Gala
@ 2011-11-24 7:46 ` Kumar Gala
1 sibling, 0 replies; 3+ messages in thread
From: Kumar Gala @ 2011-11-24 7:46 UTC (permalink / raw)
To: Rusev; +Cc: Shaohui.Xie, linux-kernel, Shengzhou.Liu, paulus, linuxppc-dev
On Oct 27, 2011, at 9:18 AM, Rusev wrote:
> patch is vs. 2.6.39, yet it applied to 3.1
>=20
>=20
>=20
> Fix of UPM driver for Freescale PowerPC processors
>=20
> If Freescale LBC driver fails to initialise itself from device tree,
> then internal structure is freed only but not NULL-fied.
> As result functions fsl_lbc_find() after checking the structure is not =
NULL are
> trying to access device registers.
>=20
> Signed-off-by: Alexandre Rusev <arusev@dev.rtsoft.ru>=20
applied to next
- k=
^ permalink raw reply [flat|nested] 3+ messages in thread
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2011-10-27 14:18 Fix for fsl_upm Rusev
2011-10-27 18:28 ` Kumar Gala
2011-11-24 7:46 ` Kumar Gala
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