| Message ID | 1581574854-9366-1-git-send-email-Anson.Huang@nxp.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [V2] ARM: imx: Add missing of_node_put() | expand |
On Thu, Feb 13, 2020 at 02:20:54PM +0800, Anson Huang wrote: > After finishing using device node got from of_find_compatible_node(), > of_node_put() needs to be called. > > Signed-off-by: Anson Huang <Anson.Huang@nxp.com> > --- > Changes since V1: > - correct some of_node_put() place to make sure it is safe to be put. > --- > arch/arm/mach-imx/anatop.c | 3 +++ > arch/arm/mach-imx/gpc.c | 1 + > arch/arm/mach-imx/platsmp.c | 1 + > arch/arm/mach-imx/pm-imx6.c | 2 ++ > arch/arm/mach-imx/pm-imx7ulp.c | 1 + > 5 files changed, 8 insertions(+) > > diff --git a/arch/arm/mach-imx/anatop.c b/arch/arm/mach-imx/anatop.c > index 8fb68c0..5985731 100644 > --- a/arch/arm/mach-imx/anatop.c > +++ b/arch/arm/mach-imx/anatop.c > @@ -135,6 +135,7 @@ void __init imx_init_revision_from_anatop(void) > void __iomem *src_base; > u32 sbmr2; > > + of_node_put(np); > np = of_find_compatible_node(NULL, NULL, > "fsl,imx6ul-src"); > src_base = of_iomap(np, 0); > @@ -152,6 +153,8 @@ void __init imx_init_revision_from_anatop(void) > > mxc_set_cpu_type(digprog >> 16 & 0xff); > imx_set_soc_revision(revision); > + > + of_node_put(np); > } It would be a bit more natural here IMHO to introduce a second struct device_node * variable for the fsl,imx6ul-src device. Then each of_node_put would belong to exactly one of_find_compatible_node(). (Now the of_node_put() in line 157 frees the fsl,imx6ul-src on i.MX6ULL and fsl,imx6q-anatop on the others.) The other hunks look fine. Best regards Uwe
Hi, Uwe > Subject: Re: [PATCH V2] ARM: imx: Add missing of_node_put() > > On Thu, Feb 13, 2020 at 02:20:54PM +0800, Anson Huang wrote: > > After finishing using device node got from of_find_compatible_node(), > > of_node_put() needs to be called. > > > > Signed-off-by: Anson Huang <Anson.Huang@nxp.com> > > --- > > Changes since V1: > > - correct some of_node_put() place to make sure it is safe to be put. > > --- > > arch/arm/mach-imx/anatop.c | 3 +++ > > arch/arm/mach-imx/gpc.c | 1 + > > arch/arm/mach-imx/platsmp.c | 1 + > > arch/arm/mach-imx/pm-imx6.c | 2 ++ > > arch/arm/mach-imx/pm-imx7ulp.c | 1 + > > 5 files changed, 8 insertions(+) > > > > diff --git a/arch/arm/mach-imx/anatop.c b/arch/arm/mach-imx/anatop.c > > index 8fb68c0..5985731 100644 > > --- a/arch/arm/mach-imx/anatop.c > > +++ b/arch/arm/mach-imx/anatop.c > > @@ -135,6 +135,7 @@ void __init imx_init_revision_from_anatop(void) > > void __iomem *src_base; > > u32 sbmr2; > > > > + of_node_put(np); > > np = of_find_compatible_node(NULL, NULL, > > "fsl,imx6ul-src"); > > src_base = of_iomap(np, 0); > > @@ -152,6 +153,8 @@ void __init imx_init_revision_from_anatop(void) > > > > mxc_set_cpu_type(digprog >> 16 & 0xff); > > imx_set_soc_revision(revision); > > + > > + of_node_put(np); > > } > > It would be a bit more natural here IMHO to introduce a second struct > device_node * variable for the fsl,imx6ul-src device. Then each of_node_put > would belong to exactly one of_find_compatible_node(). > (Now the of_node_put() in line 157 frees the fsl,imx6ul-src on i.MX6ULL and > fsl,imx6q-anatop on the others.) Make sense, please help review V3. Thanks, Anson
diff --git a/arch/arm/mach-imx/anatop.c b/arch/arm/mach-imx/anatop.c index 8fb68c0..5985731 100644 --- a/arch/arm/mach-imx/anatop.c +++ b/arch/arm/mach-imx/anatop.c @@ -135,6 +135,7 @@ void __init imx_init_revision_from_anatop(void) void __iomem *src_base; u32 sbmr2; + of_node_put(np); np = of_find_compatible_node(NULL, NULL, "fsl,imx6ul-src"); src_base = of_iomap(np, 0); @@ -152,6 +153,8 @@ void __init imx_init_revision_from_anatop(void) mxc_set_cpu_type(digprog >> 16 & 0xff); imx_set_soc_revision(revision); + + of_node_put(np); } void __init imx_anatop_init(void) diff --git a/arch/arm/mach-imx/gpc.c b/arch/arm/mach-imx/gpc.c index b5b557f..07f1972 100644 --- a/arch/arm/mach-imx/gpc.c +++ b/arch/arm/mach-imx/gpc.c @@ -282,4 +282,5 @@ void __init imx_gpc_check_dt(void) /* map GPC, so that at least CPUidle and WARs keep working */ gpc_base = of_iomap(np, 0); } + of_node_put(np); } diff --git a/arch/arm/mach-imx/platsmp.c b/arch/arm/mach-imx/platsmp.c index 2aa2692..cf4e933 100644 --- a/arch/arm/mach-imx/platsmp.c +++ b/arch/arm/mach-imx/platsmp.c @@ -109,6 +109,7 @@ static void __init ls1021a_smp_prepare_cpus(unsigned int max_cpus) np = of_find_compatible_node(NULL, NULL, "fsl,ls1021a-dcfg"); dcfg_base = of_iomap(np, 0); + of_node_put(np); BUG_ON(!dcfg_base); paddr = __pa_symbol(secondary_startup); diff --git a/arch/arm/mach-imx/pm-imx6.c b/arch/arm/mach-imx/pm-imx6.c index 1c0ecad..dd34dff 100644 --- a/arch/arm/mach-imx/pm-imx6.c +++ b/arch/arm/mach-imx/pm-imx6.c @@ -655,6 +655,8 @@ void __init imx6_pm_ccm_init(const char *ccm_compat) if (of_property_read_bool(np, "fsl,pmic-stby-poweroff")) imx6_pm_stby_poweroff_probe(); + + of_node_put(np); } void __init imx6q_pm_init(void) diff --git a/arch/arm/mach-imx/pm-imx7ulp.c b/arch/arm/mach-imx/pm-imx7ulp.c index 7b2f738..2e756d8 100644 --- a/arch/arm/mach-imx/pm-imx7ulp.c +++ b/arch/arm/mach-imx/pm-imx7ulp.c @@ -62,6 +62,7 @@ void __init imx7ulp_pm_init(void) np = of_find_compatible_node(NULL, NULL, "fsl,imx7ulp-smc1"); smc1_base = of_iomap(np, 0); + of_node_put(np); WARN_ON(!smc1_base); imx7ulp_set_lpm(ULP_PM_RUN);
After finishing using device node got from of_find_compatible_node(), of_node_put() needs to be called. Signed-off-by: Anson Huang <Anson.Huang@nxp.com> --- Changes since V1: - correct some of_node_put() place to make sure it is safe to be put. --- arch/arm/mach-imx/anatop.c | 3 +++ arch/arm/mach-imx/gpc.c | 1 + arch/arm/mach-imx/platsmp.c | 1 + arch/arm/mach-imx/pm-imx6.c | 2 ++ arch/arm/mach-imx/pm-imx7ulp.c | 1 + 5 files changed, 8 insertions(+)