| Message ID | 1579167145-1480-2-git-send-email-peng.fan@nxp.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ARM: imx: move cpu code to drivers/soc/imx | expand |
> -----Original Message----- > From: Peng Fan <peng.fan@nxp.com> > Sent: Thursday, January 16, 2020 5:37 PM > To: shawnguo@kernel.org; s.hauer@pengutronix.de > Cc: kernel@pengutronix.de; festevam@gmail.com; dl-linux-imx > <linux-imx@nxp.com>; allison@lohutok.net; info@metux.net; Anson Huang > <anson.huang@nxp.com>; Leonard Crestez <leonard.crestez@nxp.com>; > git@andred.net; Abel Vesa <abel.vesa@nxp.com>; ard.biesheuvel@linaro.org; > linux-arm-kernel@lists.infradead.org; linux-kernel@vger.kernel.org; Peng Fan > <peng.fan@nxp.com> > Subject: [RFC 1/4] ARM: imx: use device_initcall for imx_soc_device_init > > From: Peng Fan <peng.fan@nxp.com> > > This is preparation to move imx_soc_device_init to drivers/soc/imx/ > > There is no reason to must put dt devices under /sys/devices/soc0, they could > also be under /sys/devices/platform, so we could pass NULL as parent when > calling of_platform_default_populate. > This change will impact various internal test case & userspace lib, I think. Need to ask test team & other developer to double check the impact. BR Jacky Bai > Following soc-imx8.c soc-imx-scu.c using device_initcall, need to change > return type to int type for imx_soc_device_init. > > Signed-off-by: Peng Fan <peng.fan@nxp.com> > --- > arch/arm/mach-imx/common.h | 1 - > arch/arm/mach-imx/cpu.c | 9 +++++---- > arch/arm/mach-imx/mach-imx6q.c | 8 +------- > arch/arm/mach-imx/mach-imx6sl.c | 8 +------- > arch/arm/mach-imx/mach-imx6sx.c | 8 +------- > arch/arm/mach-imx/mach-imx6ul.c | 8 +------- > arch/arm/mach-imx/mach-imx7d.c | 6 ------ > arch/arm/mach-imx/mach-imx7ulp.c | 2 +- > 8 files changed, 10 insertions(+), 40 deletions(-) > > diff --git a/arch/arm/mach-imx/common.h b/arch/arm/mach-imx/common.h > index 912aeceb4ff8..09e89aa7be50 100644 > --- a/arch/arm/mach-imx/common.h > +++ b/arch/arm/mach-imx/common.h > @@ -49,7 +49,6 @@ void imx_aips_allow_unprivileged_access(const char > *compat); int mxc_device_init(void); void imx_set_soc_revision(unsigned > int rev); void imx_init_revision_from_anatop(void); > -struct device *imx_soc_device_init(void); void imx6_enable_rbc(bool > enable); void imx_gpc_check_dt(void); void > imx_gpc_set_arm_power_in_lpm(bool power_off); diff --git > a/arch/arm/mach-imx/cpu.c b/arch/arm/mach-imx/cpu.c index > 06f8d64b65af..2df649a84697 100644 > --- a/arch/arm/mach-imx/cpu.c > +++ b/arch/arm/mach-imx/cpu.c > @@ -83,7 +83,7 @@ void __init imx_aips_allow_unprivileged_access( > } > } > > -struct device * __init imx_soc_device_init(void) > +static int __init imx_soc_device_init(void) > { > struct soc_device_attribute *soc_dev_attr; > const char *ocotp_compat = NULL; > @@ -97,7 +97,7 @@ struct device * __init imx_soc_device_init(void) > > soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); > if (!soc_dev_attr) > - return NULL; > + return PTR_ERR(soc_dev_attr); > > soc_dev_attr->family = "Freescale i.MX"; > > @@ -219,7 +219,7 @@ struct device * __init imx_soc_device_init(void) > if (IS_ERR(soc_dev)) > goto free_serial_number; > > - return soc_device_to_device(soc_dev); > + return 0; > > free_serial_number: > kfree(soc_dev_attr->serial_number); > @@ -227,5 +227,6 @@ struct device * __init imx_soc_device_init(void) > kfree(soc_dev_attr->revision); > free_soc: > kfree(soc_dev_attr); > - return NULL; > + return -ENOMEM; > } > +device_initcall(imx_soc_device_init); > diff --git a/arch/arm/mach-imx/mach-imx6q.c > b/arch/arm/mach-imx/mach-imx6q.c index edd26e0ffeec..735da3311320 > 100644 > --- a/arch/arm/mach-imx/mach-imx6q.c > +++ b/arch/arm/mach-imx/mach-imx6q.c > @@ -258,21 +258,15 @@ static void __init imx6q_axi_init(void) > > static void __init imx6q_init_machine(void) { > - struct device *parent; > - > if (cpu_is_imx6q() && imx_get_soc_revision() == > IMX_CHIP_REVISION_2_0) > imx_print_silicon_rev("i.MX6QP", IMX_CHIP_REVISION_1_0); > else > imx_print_silicon_rev(cpu_is_imx6dl() ? "i.MX6DL" : "i.MX6Q", > imx_get_soc_revision()); > > - parent = imx_soc_device_init(); > - if (parent == NULL) > - pr_warn("failed to initialize soc device\n"); > - > imx6q_enet_phy_init(); > > - of_platform_default_populate(NULL, NULL, parent); > + of_platform_default_populate(NULL, NULL, NULL); > > imx_anatop_init(); > cpu_is_imx6q() ? imx6q_pm_init() : imx6dl_pm_init(); diff --git > a/arch/arm/mach-imx/mach-imx6sl.c b/arch/arm/mach-imx/mach-imx6sl.c > index e00818abe54d..0f046a37dc73 100644 > --- a/arch/arm/mach-imx/mach-imx6sl.c > +++ b/arch/arm/mach-imx/mach-imx6sl.c > @@ -46,13 +46,7 @@ static void __init imx6sl_init_late(void) > > static void __init imx6sl_init_machine(void) { > - struct device *parent; > - > - parent = imx_soc_device_init(); > - if (parent == NULL) > - pr_warn("failed to initialize soc device\n"); > - > - of_platform_default_populate(NULL, NULL, parent); > + of_platform_default_populate(NULL, NULL, NULL); > > if (cpu_is_imx6sl()) > imx6sl_fec_init(); > diff --git a/arch/arm/mach-imx/mach-imx6sx.c > b/arch/arm/mach-imx/mach-imx6sx.c index d5310bf307ff..781e2a94fdd7 > 100644 > --- a/arch/arm/mach-imx/mach-imx6sx.c > +++ b/arch/arm/mach-imx/mach-imx6sx.c > @@ -63,13 +63,7 @@ static inline void imx6sx_enet_init(void) > > static void __init imx6sx_init_machine(void) { > - struct device *parent; > - > - parent = imx_soc_device_init(); > - if (parent == NULL) > - pr_warn("failed to initialize soc device\n"); > - > - of_platform_default_populate(NULL, NULL, parent); > + of_platform_default_populate(NULL, NULL, NULL); > > imx6sx_enet_init(); > imx_anatop_init(); > diff --git a/arch/arm/mach-imx/mach-imx6ul.c > b/arch/arm/mach-imx/mach-imx6ul.c index 311f5e4ff723..9db8e567c6b5 > 100644 > --- a/arch/arm/mach-imx/mach-imx6ul.c > +++ b/arch/arm/mach-imx/mach-imx6ul.c > @@ -56,13 +56,7 @@ static inline void imx6ul_enet_init(void) > > static void __init imx6ul_init_machine(void) { > - struct device *parent; > - > - parent = imx_soc_device_init(); > - if (parent == NULL) > - pr_warn("failed to initialize soc device\n"); > - > - of_platform_default_populate(NULL, NULL, parent); > + of_platform_default_populate(NULL, NULL, NULL); > imx6ul_enet_init(); > imx_anatop_init(); > imx6ul_pm_init(); > diff --git a/arch/arm/mach-imx/mach-imx7d.c > b/arch/arm/mach-imx/mach-imx7d.c index ebb27592a9f7..879c35929a13 > 100644 > --- a/arch/arm/mach-imx/mach-imx7d.c > +++ b/arch/arm/mach-imx/mach-imx7d.c > @@ -78,12 +78,6 @@ static inline void imx7d_enet_init(void) > > static void __init imx7d_init_machine(void) { > - struct device *parent; > - > - parent = imx_soc_device_init(); > - if (parent == NULL) > - pr_warn("failed to initialize soc device\n"); > - > imx_anatop_init(); > imx7d_enet_init(); > } > diff --git a/arch/arm/mach-imx/mach-imx7ulp.c > b/arch/arm/mach-imx/mach-imx7ulp.c > index 11ac71aaf965..128cf4c92aab 100644 > --- a/arch/arm/mach-imx/mach-imx7ulp.c > +++ b/arch/arm/mach-imx/mach-imx7ulp.c > @@ -57,7 +57,7 @@ static void __init imx7ulp_init_machine(void) > > mxc_set_cpu_type(MXC_CPU_IMX7ULP); > imx7ulp_set_revision(); > - of_platform_default_populate(NULL, NULL, imx_soc_device_init()); > + of_platform_default_populate(NULL, NULL, NULL); > } > > static const char *const imx7ulp_dt_compat[] __initconst = { > -- > 2.16.4
> > Subject: [RFC 1/4] ARM: imx: use device_initcall for > > imx_soc_device_init > > > > From: Peng Fan <peng.fan@nxp.com> > > > > This is preparation to move imx_soc_device_init to drivers/soc/imx/ > > > > There is no reason to must put dt devices under /sys/devices/soc0, > > they could also be under /sys/devices/platform, so we could pass NULL > > as parent when calling of_platform_default_populate. > > > > This change will impact various internal test case & userspace lib, I think. > Need to ask test team & other developer to double check the impact. /sys/devices/soc0 is still there, the patchset only moves the platform devices which under /sys/devices/soc0 to /sys/devices/platform In this way, we aligned with ARM64. And simplify arch code by moving the code to drivers/soc/imx. In future, considering more cleanup, we could merge the code to soc-imx8.c, since they share similar silicon rev ocotp logic. Thanks, Peng. > > BR > Jacky Bai > > Following soc-imx8.c soc-imx-scu.c using device_initcall, need to > > change return type to int type for imx_soc_device_init. > > > > Signed-off-by: Peng Fan <peng.fan@nxp.com> > > --- > > arch/arm/mach-imx/common.h | 1 - > > arch/arm/mach-imx/cpu.c | 9 +++++---- > > arch/arm/mach-imx/mach-imx6q.c | 8 +------- > > arch/arm/mach-imx/mach-imx6sl.c | 8 +------- > > arch/arm/mach-imx/mach-imx6sx.c | 8 +------- > > arch/arm/mach-imx/mach-imx6ul.c | 8 +------- > > arch/arm/mach-imx/mach-imx7d.c | 6 ------ > > arch/arm/mach-imx/mach-imx7ulp.c | 2 +- > > 8 files changed, 10 insertions(+), 40 deletions(-) > > > > diff --git a/arch/arm/mach-imx/common.h > b/arch/arm/mach-imx/common.h > > index 912aeceb4ff8..09e89aa7be50 100644 > > --- a/arch/arm/mach-imx/common.h > > +++ b/arch/arm/mach-imx/common.h > > @@ -49,7 +49,6 @@ void imx_aips_allow_unprivileged_access(const char > > *compat); int mxc_device_init(void); void > > imx_set_soc_revision(unsigned int rev); void > > imx_init_revision_from_anatop(void); > > -struct device *imx_soc_device_init(void); void imx6_enable_rbc(bool > > enable); void imx_gpc_check_dt(void); void > > imx_gpc_set_arm_power_in_lpm(bool power_off); diff --git > > a/arch/arm/mach-imx/cpu.c b/arch/arm/mach-imx/cpu.c index > > 06f8d64b65af..2df649a84697 100644 > > --- a/arch/arm/mach-imx/cpu.c > > +++ b/arch/arm/mach-imx/cpu.c > > @@ -83,7 +83,7 @@ void __init imx_aips_allow_unprivileged_access( > > } > > } > > > > -struct device * __init imx_soc_device_init(void) > > +static int __init imx_soc_device_init(void) > > { > > struct soc_device_attribute *soc_dev_attr; > > const char *ocotp_compat = NULL; > > @@ -97,7 +97,7 @@ struct device * __init imx_soc_device_init(void) > > > > soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); > > if (!soc_dev_attr) > > - return NULL; > > + return PTR_ERR(soc_dev_attr); > > > > soc_dev_attr->family = "Freescale i.MX"; > > > > @@ -219,7 +219,7 @@ struct device * __init imx_soc_device_init(void) > > if (IS_ERR(soc_dev)) > > goto free_serial_number; > > > > - return soc_device_to_device(soc_dev); > > + return 0; > > > > free_serial_number: > > kfree(soc_dev_attr->serial_number); > > @@ -227,5 +227,6 @@ struct device * __init imx_soc_device_init(void) > > kfree(soc_dev_attr->revision); > > free_soc: > > kfree(soc_dev_attr); > > - return NULL; > > + return -ENOMEM; > > } > > +device_initcall(imx_soc_device_init); > > diff --git a/arch/arm/mach-imx/mach-imx6q.c > > b/arch/arm/mach-imx/mach-imx6q.c index edd26e0ffeec..735da3311320 > > 100644 > > --- a/arch/arm/mach-imx/mach-imx6q.c > > +++ b/arch/arm/mach-imx/mach-imx6q.c > > @@ -258,21 +258,15 @@ static void __init imx6q_axi_init(void) > > > > static void __init imx6q_init_machine(void) { > > - struct device *parent; > > - > > if (cpu_is_imx6q() && imx_get_soc_revision() == > > IMX_CHIP_REVISION_2_0) > > imx_print_silicon_rev("i.MX6QP", IMX_CHIP_REVISION_1_0); > > else > > imx_print_silicon_rev(cpu_is_imx6dl() ? "i.MX6DL" : "i.MX6Q", > > imx_get_soc_revision()); > > > > - parent = imx_soc_device_init(); > > - if (parent == NULL) > > - pr_warn("failed to initialize soc device\n"); > > - > > imx6q_enet_phy_init(); > > > > - of_platform_default_populate(NULL, NULL, parent); > > + of_platform_default_populate(NULL, NULL, NULL); > > > > imx_anatop_init(); > > cpu_is_imx6q() ? imx6q_pm_init() : imx6dl_pm_init(); diff --git > > a/arch/arm/mach-imx/mach-imx6sl.c > b/arch/arm/mach-imx/mach-imx6sl.c > > index e00818abe54d..0f046a37dc73 100644 > > --- a/arch/arm/mach-imx/mach-imx6sl.c > > +++ b/arch/arm/mach-imx/mach-imx6sl.c > > @@ -46,13 +46,7 @@ static void __init imx6sl_init_late(void) > > > > static void __init imx6sl_init_machine(void) { > > - struct device *parent; > > - > > - parent = imx_soc_device_init(); > > - if (parent == NULL) > > - pr_warn("failed to initialize soc device\n"); > > - > > - of_platform_default_populate(NULL, NULL, parent); > > + of_platform_default_populate(NULL, NULL, NULL); > > > > if (cpu_is_imx6sl()) > > imx6sl_fec_init(); > > diff --git a/arch/arm/mach-imx/mach-imx6sx.c > > b/arch/arm/mach-imx/mach-imx6sx.c index d5310bf307ff..781e2a94fdd7 > > 100644 > > --- a/arch/arm/mach-imx/mach-imx6sx.c > > +++ b/arch/arm/mach-imx/mach-imx6sx.c > > @@ -63,13 +63,7 @@ static inline void imx6sx_enet_init(void) > > > > static void __init imx6sx_init_machine(void) { > > - struct device *parent; > > - > > - parent = imx_soc_device_init(); > > - if (parent == NULL) > > - pr_warn("failed to initialize soc device\n"); > > - > > - of_platform_default_populate(NULL, NULL, parent); > > + of_platform_default_populate(NULL, NULL, NULL); > > > > imx6sx_enet_init(); > > imx_anatop_init(); > > diff --git a/arch/arm/mach-imx/mach-imx6ul.c > > b/arch/arm/mach-imx/mach-imx6ul.c index 311f5e4ff723..9db8e567c6b5 > > 100644 > > --- a/arch/arm/mach-imx/mach-imx6ul.c > > +++ b/arch/arm/mach-imx/mach-imx6ul.c > > @@ -56,13 +56,7 @@ static inline void imx6ul_enet_init(void) > > > > static void __init imx6ul_init_machine(void) { > > - struct device *parent; > > - > > - parent = imx_soc_device_init(); > > - if (parent == NULL) > > - pr_warn("failed to initialize soc device\n"); > > - > > - of_platform_default_populate(NULL, NULL, parent); > > + of_platform_default_populate(NULL, NULL, NULL); > > imx6ul_enet_init(); > > imx_anatop_init(); > > imx6ul_pm_init(); > > diff --git a/arch/arm/mach-imx/mach-imx7d.c > > b/arch/arm/mach-imx/mach-imx7d.c index ebb27592a9f7..879c35929a13 > > 100644 > > --- a/arch/arm/mach-imx/mach-imx7d.c > > +++ b/arch/arm/mach-imx/mach-imx7d.c > > @@ -78,12 +78,6 @@ static inline void imx7d_enet_init(void) > > > > static void __init imx7d_init_machine(void) { > > - struct device *parent; > > - > > - parent = imx_soc_device_init(); > > - if (parent == NULL) > > - pr_warn("failed to initialize soc device\n"); > > - > > imx_anatop_init(); > > imx7d_enet_init(); > > } > > diff --git a/arch/arm/mach-imx/mach-imx7ulp.c > > b/arch/arm/mach-imx/mach-imx7ulp.c > > index 11ac71aaf965..128cf4c92aab 100644 > > --- a/arch/arm/mach-imx/mach-imx7ulp.c > > +++ b/arch/arm/mach-imx/mach-imx7ulp.c > > @@ -57,7 +57,7 @@ static void __init imx7ulp_init_machine(void) > > > > mxc_set_cpu_type(MXC_CPU_IMX7ULP); > > imx7ulp_set_revision(); > > - of_platform_default_populate(NULL, NULL, imx_soc_device_init()); > > + of_platform_default_populate(NULL, NULL, NULL); > > } > > > > static const char *const imx7ulp_dt_compat[] __initconst = { > > -- > > 2.16.4
On Fri, Jan 17, 2020 at 08:15:54AM +0000, Peng Fan wrote: > > > Subject: [RFC 1/4] ARM: imx: use device_initcall for > > > imx_soc_device_init > > > > > > From: Peng Fan <peng.fan@nxp.com> > > > > > > This is preparation to move imx_soc_device_init to drivers/soc/imx/ > > > > > > There is no reason to must put dt devices under /sys/devices/soc0, > > > they could also be under /sys/devices/platform, so we could pass NULL > > > as parent when calling of_platform_default_populate. > > > > > > > This change will impact various internal test case & userspace lib, I think. > > Need to ask test team & other developer to double check the impact. > > /sys/devices/soc0 is still there, the patchset only moves > the platform devices which under /sys/devices/soc0 to /sys/devices/platform Jacky's concern still stands, as there are many user spaces which will be broken and need update. > In this way, we aligned with ARM64. And simplify arch code by moving > the code to drivers/soc/imx. In future, considering more cleanup, > we could merge the code to soc-imx8.c, since they share similar > silicon rev ocotp logic. Though this is a good thing from maintenance point of view, we do not want to break user spaces. Shawn
> Subject: Re: [RFC 1/4] ARM: imx: use device_initcall for imx_soc_device_init > > On Fri, Jan 17, 2020 at 08:15:54AM +0000, Peng Fan wrote: > > > > Subject: [RFC 1/4] ARM: imx: use device_initcall for > > > > imx_soc_device_init > > > > > > > > From: Peng Fan <peng.fan@nxp.com> > > > > > > > > This is preparation to move imx_soc_device_init to > > > > drivers/soc/imx/ > > > > > > > > There is no reason to must put dt devices under /sys/devices/soc0, > > > > they could also be under /sys/devices/platform, so we could pass > > > > NULL as parent when calling of_platform_default_populate. > > > > > > > > > > This change will impact various internal test case & userspace lib, I think. > > > Need to ask test team & other developer to double check the impact. > > > > /sys/devices/soc0 is still there, the patchset only moves the platform > > devices which under /sys/devices/soc0 to /sys/devices/platform > > Jacky's concern still stands, as there are many user spaces which will be > broken and need update. The soc device itself still under /sys/devices/soc0, the soc_id/revision still there. It is just the platform devices moved to /sys/devices/platform. When I confirm with Jacky before, his concern is soc_id/revision will be moved. But this is not true, they are still there as before. > > > In this way, we aligned with ARM64. And simplify arch code by moving > > the code to drivers/soc/imx. In future, considering more cleanup, we > > could merge the code to soc-imx8.c, since they share similar silicon > > rev ocotp logic. > > Though this is a good thing from maintenance point of view, we do not want > to break user spaces. Actually not break user spaces, since this is RFC, I not expect this be merged. If you agree, I could post normal V1 patchset. Thanks, Peng. > > Shawn
On Thu, Feb 13, 2020 at 05:47:41AM +0000, Peng Fan wrote: > > Subject: Re: [RFC 1/4] ARM: imx: use device_initcall for imx_soc_device_init > > > > On Fri, Jan 17, 2020 at 08:15:54AM +0000, Peng Fan wrote: > > > > > Subject: [RFC 1/4] ARM: imx: use device_initcall for > > > > > imx_soc_device_init > > > > > > > > > > From: Peng Fan <peng.fan@nxp.com> > > > > > > > > > > This is preparation to move imx_soc_device_init to > > > > > drivers/soc/imx/ > > > > > > > > > > There is no reason to must put dt devices under /sys/devices/soc0, > > > > > they could also be under /sys/devices/platform, so we could pass > > > > > NULL as parent when calling of_platform_default_populate. > > > > > > > > > > > > > This change will impact various internal test case & userspace lib, I think. > > > > Need to ask test team & other developer to double check the impact. > > > > > > /sys/devices/soc0 is still there, the patchset only moves the platform > > > devices which under /sys/devices/soc0 to /sys/devices/platform > > > > Jacky's concern still stands, as there are many user spaces which will be > > broken and need update. > > The soc device itself still under /sys/devices/soc0, the soc_id/revision still there. > It is just the platform devices moved to /sys/devices/platform. > > When I confirm with Jacky before, his concern is soc_id/revision will be > moved. But this is not true, they are still there as before. > > > > > > In this way, we aligned with ARM64. And simplify arch code by moving > > > the code to drivers/soc/imx. In future, considering more cleanup, we > > > could merge the code to soc-imx8.c, since they share similar silicon > > > rev ocotp logic. > > > > Though this is a good thing from maintenance point of view, we do not want > > to break user spaces. > > Actually not break user spaces, since this is RFC, I not expect this be merged. > If you agree, I could post normal V1 patchset. Okay. You send formal patches, and we get them into linux-next to see if people will complain any breakage. Shawn
diff --git a/arch/arm/mach-imx/common.h b/arch/arm/mach-imx/common.h index 912aeceb4ff8..09e89aa7be50 100644 --- a/arch/arm/mach-imx/common.h +++ b/arch/arm/mach-imx/common.h @@ -49,7 +49,6 @@ void imx_aips_allow_unprivileged_access(const char *compat); int mxc_device_init(void); void imx_set_soc_revision(unsigned int rev); void imx_init_revision_from_anatop(void); -struct device *imx_soc_device_init(void); void imx6_enable_rbc(bool enable); void imx_gpc_check_dt(void); void imx_gpc_set_arm_power_in_lpm(bool power_off); diff --git a/arch/arm/mach-imx/cpu.c b/arch/arm/mach-imx/cpu.c index 06f8d64b65af..2df649a84697 100644 --- a/arch/arm/mach-imx/cpu.c +++ b/arch/arm/mach-imx/cpu.c @@ -83,7 +83,7 @@ void __init imx_aips_allow_unprivileged_access( } } -struct device * __init imx_soc_device_init(void) +static int __init imx_soc_device_init(void) { struct soc_device_attribute *soc_dev_attr; const char *ocotp_compat = NULL; @@ -97,7 +97,7 @@ struct device * __init imx_soc_device_init(void) soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); if (!soc_dev_attr) - return NULL; + return PTR_ERR(soc_dev_attr); soc_dev_attr->family = "Freescale i.MX"; @@ -219,7 +219,7 @@ struct device * __init imx_soc_device_init(void) if (IS_ERR(soc_dev)) goto free_serial_number; - return soc_device_to_device(soc_dev); + return 0; free_serial_number: kfree(soc_dev_attr->serial_number); @@ -227,5 +227,6 @@ struct device * __init imx_soc_device_init(void) kfree(soc_dev_attr->revision); free_soc: kfree(soc_dev_attr); - return NULL; + return -ENOMEM; } +device_initcall(imx_soc_device_init); diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c index edd26e0ffeec..735da3311320 100644 --- a/arch/arm/mach-imx/mach-imx6q.c +++ b/arch/arm/mach-imx/mach-imx6q.c @@ -258,21 +258,15 @@ static void __init imx6q_axi_init(void) static void __init imx6q_init_machine(void) { - struct device *parent; - if (cpu_is_imx6q() && imx_get_soc_revision() == IMX_CHIP_REVISION_2_0) imx_print_silicon_rev("i.MX6QP", IMX_CHIP_REVISION_1_0); else imx_print_silicon_rev(cpu_is_imx6dl() ? "i.MX6DL" : "i.MX6Q", imx_get_soc_revision()); - parent = imx_soc_device_init(); - if (parent == NULL) - pr_warn("failed to initialize soc device\n"); - imx6q_enet_phy_init(); - of_platform_default_populate(NULL, NULL, parent); + of_platform_default_populate(NULL, NULL, NULL); imx_anatop_init(); cpu_is_imx6q() ? imx6q_pm_init() : imx6dl_pm_init(); diff --git a/arch/arm/mach-imx/mach-imx6sl.c b/arch/arm/mach-imx/mach-imx6sl.c index e00818abe54d..0f046a37dc73 100644 --- a/arch/arm/mach-imx/mach-imx6sl.c +++ b/arch/arm/mach-imx/mach-imx6sl.c @@ -46,13 +46,7 @@ static void __init imx6sl_init_late(void) static void __init imx6sl_init_machine(void) { - struct device *parent; - - parent = imx_soc_device_init(); - if (parent == NULL) - pr_warn("failed to initialize soc device\n"); - - of_platform_default_populate(NULL, NULL, parent); + of_platform_default_populate(NULL, NULL, NULL); if (cpu_is_imx6sl()) imx6sl_fec_init(); diff --git a/arch/arm/mach-imx/mach-imx6sx.c b/arch/arm/mach-imx/mach-imx6sx.c index d5310bf307ff..781e2a94fdd7 100644 --- a/arch/arm/mach-imx/mach-imx6sx.c +++ b/arch/arm/mach-imx/mach-imx6sx.c @@ -63,13 +63,7 @@ static inline void imx6sx_enet_init(void) static void __init imx6sx_init_machine(void) { - struct device *parent; - - parent = imx_soc_device_init(); - if (parent == NULL) - pr_warn("failed to initialize soc device\n"); - - of_platform_default_populate(NULL, NULL, parent); + of_platform_default_populate(NULL, NULL, NULL); imx6sx_enet_init(); imx_anatop_init(); diff --git a/arch/arm/mach-imx/mach-imx6ul.c b/arch/arm/mach-imx/mach-imx6ul.c index 311f5e4ff723..9db8e567c6b5 100644 --- a/arch/arm/mach-imx/mach-imx6ul.c +++ b/arch/arm/mach-imx/mach-imx6ul.c @@ -56,13 +56,7 @@ static inline void imx6ul_enet_init(void) static void __init imx6ul_init_machine(void) { - struct device *parent; - - parent = imx_soc_device_init(); - if (parent == NULL) - pr_warn("failed to initialize soc device\n"); - - of_platform_default_populate(NULL, NULL, parent); + of_platform_default_populate(NULL, NULL, NULL); imx6ul_enet_init(); imx_anatop_init(); imx6ul_pm_init(); diff --git a/arch/arm/mach-imx/mach-imx7d.c b/arch/arm/mach-imx/mach-imx7d.c index ebb27592a9f7..879c35929a13 100644 --- a/arch/arm/mach-imx/mach-imx7d.c +++ b/arch/arm/mach-imx/mach-imx7d.c @@ -78,12 +78,6 @@ static inline void imx7d_enet_init(void) static void __init imx7d_init_machine(void) { - struct device *parent; - - parent = imx_soc_device_init(); - if (parent == NULL) - pr_warn("failed to initialize soc device\n"); - imx_anatop_init(); imx7d_enet_init(); } diff --git a/arch/arm/mach-imx/mach-imx7ulp.c b/arch/arm/mach-imx/mach-imx7ulp.c index 11ac71aaf965..128cf4c92aab 100644 --- a/arch/arm/mach-imx/mach-imx7ulp.c +++ b/arch/arm/mach-imx/mach-imx7ulp.c @@ -57,7 +57,7 @@ static void __init imx7ulp_init_machine(void) mxc_set_cpu_type(MXC_CPU_IMX7ULP); imx7ulp_set_revision(); - of_platform_default_populate(NULL, NULL, imx_soc_device_init()); + of_platform_default_populate(NULL, NULL, NULL); } static const char *const imx7ulp_dt_compat[] __initconst = {