On Mon, Jul 16, 2018 at 04:11:44PM +0300, Mikko Perttunen wrote:
> Hello,
>
> the recently applied "ata: ahci_platform: convert kcalloc to
> devm_kcalloc" seems to be causing boot failures on Tegra124 Jetson TK1.
> The patch is as follows:
>
> diff --git a/drivers/ata/libahci_platform.c b/drivers/ata/libahci_platform.c
> index be9f54423a9b..fe8939e161ea 100644
> --- a/drivers/ata/libahci_platform.c
> +++ b/drivers/ata/libahci_platform.c
> @@ -271,8 +271,6 @@ static void ahci_platform_put_resources(struct
> device *dev, void *res)
> for (c = 0; c < hpriv->nports; c++)
> if (hpriv->target_pwrs && hpriv->target_pwrs[c])
> regulator_put(hpriv->target_pwrs[c]);
> -
> - kfree(hpriv->target_pwrs);
> }
>
> static int ahci_platform_get_phy(struct ahci_host_priv *hpriv, u32 port,
> @@ -408,7 +406,7 @@ struct ahci_host_priv
> *ahci_platform_get_resources(struct platform_device *pdev)
> rc = -ENOMEM;
> goto err_out;
> }
> - hpriv->target_pwrs = kcalloc(hpriv->nports,
> sizeof(*hpriv->target_pwrs), GFP_KERNEL);
> + hpriv->target_pwrs = devm_kcalloc(dev, hpriv->nports,
> sizeof(*hpriv->target_pwrs), GFP_KERNEL);
> if (!hpriv->target_pwrs) {
> rc = -ENOMEM;
> goto err_out;
>
> However, this is not valid, as it will cause hpriv->target_pwrs to be
> freed before ahci_platform_put_resources is called. With the older code,
> the free happened intentionally only after the regulator_put calls were
> done.
>
Hello
I am surprised, since I have tested all my AHCI patch on a Tegra124 Jetson TK1.
Could you print the boot crash ?
Regards
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