Re: [PATCH 1/2] arm: omap: fix bug with multiple smsc911x devices

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Hi Igor,

On Thu, Apr 21, 2011 at 5:50 PM, Igor Grinberg <grinberg@xxxxxxxxxxxxxx> wrote:
>
> kobject (c06a4250): tried to init an initialized object, something is
> seriously wrong.
>
> introduced by commit 66293989:
> (omap: convert boards that use SMSC911x to use gpmc-smsc911x)
>
> fixed by allocating struct platform_device dynamically.
>
> Signed-off-by: Igor Grinberg <grinberg@xxxxxxxxxxxxxx>
> ---
> This has been boot tested with nfs root on cm-t35,
> and build tested on all other affected boards.
>
>  arch/arm/mach-omap2/board-cm-t35.c              |    2 ++
>  arch/arm/mach-omap2/board-igep0020.c            |    1 +
>  arch/arm/mach-omap2/board-ldp.c                 |    1 +
>  arch/arm/mach-omap2/board-omap3evm.c            |    1 +
>  arch/arm/mach-omap2/board-omap3logic.c          |    1 +
>  arch/arm/mach-omap2/board-omap3stalker.c        |    1 +
>  arch/arm/mach-omap2/board-overo.c               |    2 ++
>  arch/arm/mach-omap2/board-zoom-debugboard.c     |    1 +
>  arch/arm/mach-omap2/gpmc-smsc911x.c             |   16 +++++-----------
>  arch/arm/plat-omap/include/plat/gpmc-smsc911x.h |    1 +
>  10 files changed, 16 insertions(+), 11 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/board-cm-t35.c b/arch/arm/mach-omap2/board-cm-t35.c
> index b5772c1..7c70f56 100644
> --- a/arch/arm/mach-omap2/board-cm-t35.c
> +++ b/arch/arm/mach-omap2/board-cm-t35.c
> @@ -69,6 +69,7 @@
>  #include <plat/gpmc-smsc911x.h>
>
>  static struct omap_smsc911x_platform_data cm_t35_smsc911x_cfg = {
> +       .id             = 0,
>        .cs             = CM_T35_SMSC911X_CS,
>        .gpio_irq       = CM_T35_SMSC911X_GPIO,
>        .gpio_reset     = -EINVAL,
> @@ -76,6 +77,7 @@ static struct omap_smsc911x_platform_data cm_t35_smsc911x_cfg = {
>  };
>
>  static struct omap_smsc911x_platform_data sb_t35_smsc911x_cfg = {
> +       .id             = 1,
>        .cs             = SB_T35_SMSC911X_CS,
>        .gpio_irq       = SB_T35_SMSC911X_GPIO,
>        .gpio_reset     = -EINVAL,
> diff --git a/arch/arm/mach-omap2/board-igep0020.c b/arch/arm/mach-omap2/board-igep0020.c
> index 5b9bde7..2bf12fb 100644
> --- a/arch/arm/mach-omap2/board-igep0020.c
> +++ b/arch/arm/mach-omap2/board-igep0020.c
> @@ -195,6 +195,7 @@ static void __init igep2_flash_init(void) {}
>  #include <plat/gpmc-smsc911x.h>
>
>  static struct omap_smsc911x_platform_data smsc911x_cfg = {
> +       .id             = -1,
>        .cs             = IGEP2_SMSC911X_CS,
>        .gpio_irq       = IGEP2_SMSC911X_GPIO,
>        .gpio_reset     = -EINVAL,
> diff --git a/arch/arm/mach-omap2/board-ldp.c b/arch/arm/mach-omap2/board-ldp.c
> index ea9f049..94cfd82 100644
> --- a/arch/arm/mach-omap2/board-ldp.c
> +++ b/arch/arm/mach-omap2/board-ldp.c
> @@ -218,6 +218,7 @@ static struct spi_board_info ldp_spi_board_info[] __initdata = {
>  };
>
>  static struct omap_smsc911x_platform_data smsc911x_cfg = {
> +       .id             = -1,

I believe you can keep the id field uninitialized, i.e. 0.  This
applies to other boards with single smsc device as well.

>        .cs             = LDP_SMSC911X_CS,
>        .gpio_irq       = LDP_SMSC911X_GPIO,
>        .gpio_reset     = -EINVAL,
> diff --git a/arch/arm/mach-omap2/board-omap3evm.c b/arch/arm/mach-omap2/board-omap3evm.c
> index 3fc85c6..fc5c1d8 100644
> --- a/arch/arm/mach-omap2/board-omap3evm.c
> +++ b/arch/arm/mach-omap2/board-omap3evm.c
> @@ -104,6 +104,7 @@ static void __init omap3_evm_get_revision(void)
>  #include <plat/gpmc-smsc911x.h>
>
>  static struct omap_smsc911x_platform_data smsc911x_cfg = {
> +       .id             = -1,
>        .cs             = OMAP3EVM_SMSC911X_CS,
>        .gpio_irq       = OMAP3EVM_ETHR_GPIO_IRQ,
>        .gpio_reset     = -EINVAL,
> diff --git a/arch/arm/mach-omap2/board-omap3logic.c b/arch/arm/mach-omap2/board-omap3logic.c
> index a49e6cf..06248e7 100644
> --- a/arch/arm/mach-omap2/board-omap3logic.c
> +++ b/arch/arm/mach-omap2/board-omap3logic.c
> @@ -144,6 +144,7 @@ static void __init board_mmc_init(void)
>  }
>
>  static struct omap_smsc911x_platform_data __initdata board_smsc911x_data = {
> +       .id             = -1,
>        .cs             = OMAP3LOGIC_SMSC911X_CS,
>        .gpio_irq       = -EINVAL,
>        .gpio_reset     = -EINVAL,
> diff --git a/arch/arm/mach-omap2/board-omap3stalker.c b/arch/arm/mach-omap2/board-omap3stalker.c
> index 848016c..ae4eaf5 100644
> --- a/arch/arm/mach-omap2/board-omap3stalker.c
> +++ b/arch/arm/mach-omap2/board-omap3stalker.c
> @@ -64,6 +64,7 @@
>  #define OMAP3STALKER_SMC911X_CS        5
>
>  static struct omap_smsc911x_platform_data smsc911x_cfg = {
> +       .id             = -1,
>        .cs             = OMAP3STALKER_SMC911X_CS,
>        .gpio_irq       = OMAP3STALKER_ETHR_GPIO_IRQ,
>        .gpio_reset     = -EINVAL,
> diff --git a/arch/arm/mach-omap2/board-overo.c b/arch/arm/mach-omap2/board-overo.c
> index 4016166..165e1fa 100644
> --- a/arch/arm/mach-omap2/board-overo.c
> +++ b/arch/arm/mach-omap2/board-overo.c
> @@ -149,6 +149,7 @@ static inline void __init overo_ads7846_init(void) { return; }
>  #include <plat/gpmc-smsc911x.h>
>
>  static struct omap_smsc911x_platform_data smsc911x_cfg = {
> +       .id             = 0,
>        .cs             = OVERO_SMSC911X_CS,
>        .gpio_irq       = OVERO_SMSC911X_GPIO,
>        .gpio_reset     = -EINVAL,
> @@ -156,6 +157,7 @@ static struct omap_smsc911x_platform_data smsc911x_cfg = {
>  };
>
>  static struct omap_smsc911x_platform_data smsc911x2_cfg = {
> +       .id             = 1,
>        .cs             = OVERO_SMSC911X2_CS,
>        .gpio_irq       = OVERO_SMSC911X2_GPIO,
>        .gpio_reset     = -EINVAL,
> diff --git a/arch/arm/mach-omap2/board-zoom-debugboard.c b/arch/arm/mach-omap2/board-zoom-debugboard.c
> index 2ee9ab9..d6f6e93 100644
> --- a/arch/arm/mach-omap2/board-zoom-debugboard.c
> +++ b/arch/arm/mach-omap2/board-zoom-debugboard.c
> @@ -28,6 +28,7 @@
>  #define ZOOM_ETHR_START        DEBUG_BASE
>
>  static struct omap_smsc911x_platform_data zoom_smsc911x_cfg = {
> +       .id             = -1,
>        .cs             = ZOOM_SMSC911X_CS,
>        .gpio_irq       = ZOOM_SMSC911X_GPIO,
>        .gpio_reset     = -EINVAL,
> diff --git a/arch/arm/mach-omap2/gpmc-smsc911x.c b/arch/arm/mach-omap2/gpmc-smsc911x.c
> index b331f3c..d30293a 100644
> --- a/arch/arm/mach-omap2/gpmc-smsc911x.c
> +++ b/arch/arm/mach-omap2/gpmc-smsc911x.c
> @@ -41,16 +41,6 @@ static struct smsc911x_platform_config gpmc_smsc911x_config = {
>        .flags          = SMSC911X_USE_16BIT,
>  };
>
> -static struct platform_device gpmc_smsc911x_device = {
> -       .name           = "smsc911x",
> -       .id             = -1,
> -       .num_resources  = ARRAY_SIZE(gpmc_smsc911x_resources),
> -       .resource       = gpmc_smsc911x_resources,
> -       .dev            = {
> -               .platform_data = &gpmc_smsc911x_config,
> -       },
> -};
> -
>  /*
>  * Initialize smsc911x device connected to the GPMC. Note that we
>  * assume that pin multiplexing is done in the board-*.c file,
> @@ -58,6 +48,7 @@ static struct platform_device gpmc_smsc911x_device = {
>  */
>  void __init gpmc_smsc911x_init(struct omap_smsc911x_platform_data *board_data)
>  {
> +       struct platform_device *pdev;
>        unsigned long cs_mem_base;
>        int ret;
>
> @@ -97,7 +88,10 @@ void __init gpmc_smsc911x_init(struct omap_smsc911x_platform_data *board_data)
>        if (gpmc_cfg->flags)
>                gpmc_smsc911x_config.flags = gpmc_cfg->flags;
>
> -       if (platform_device_register(&gpmc_smsc911x_device) < 0) {
> +       pdev = platform_device_register_resndata(NULL, "smsc911x", gpmc_cfg->id,
> +                gpmc_smsc911x_resources, ARRAY_SIZE(gpmc_smsc911x_resources),
> +                &gpmc_smsc911x_config, sizeof(gpmc_smsc911x_config));
> +       if (!pdev) {
>                printk(KERN_ERR "Unable to register smsc911x device\n");
>                gpio_free(gpmc_cfg->gpio_reset);
>                goto free2;
> diff --git a/arch/arm/plat-omap/include/plat/gpmc-smsc911x.h b/arch/arm/plat-omap/include/plat/gpmc-smsc911x.h
> index 872de0bf..d3f1579 100644
> --- a/arch/arm/plat-omap/include/plat/gpmc-smsc911x.h
> +++ b/arch/arm/plat-omap/include/plat/gpmc-smsc911x.h
> @@ -14,6 +14,7 @@
>  #ifndef __ASM_ARCH_OMAP_GPMC_SMSC911X_H__
>
>  struct omap_smsc911x_platform_data {
> +       int     id;
>        int     cs;
>        int     gpio_irq;
>        int     gpio_reset;
> --
> 1.7.3.4
>
> --
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--
    Sincerely Yours,
        Mike.
--
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