linux-kernel - Re: [PATCH] mmc: Fix re-probing after hibernation

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Date:	Thu, 09 Dec 2010 00:04:52 +0200
From:	Maxim Levitsky <maximlevitsky@...il.com>
To:	Takashi Iwai <tiwai@...e.de>
Cc:	Chris Ball <cjb@...top.org>, Oliver Neukum <oneukum@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mmc: Fix re-probing after hibernation

On Wed, 2010-12-08 at 16:23 +0100, Takashi Iwai wrote:
> The commit 4c2ef25fe0b847d2ae818f74758ddb0be1c27d8e
>   mmc: fix all hangs related to mmc/sd card insert/removal during
>   suspend/resume
> introduced a bug where the device probing no longer works after
> hibernation.  This was because the pm notifier expects
> PM_POST_HIBERNATION call while the system sends PM_POST_RESTORE
> instead, thus disable_rescan is kept as 1.
> 
> Cc: <stable@...nel.org>
> Signed-off-by: Takashi Iwai <tiwai@...e.de>
> ---
>  drivers/mmc/core/core.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
> index 31ae07a..30094f6 100644
> --- a/drivers/mmc/core/core.c
> +++ b/drivers/mmc/core/core.c
> @@ -1772,7 +1772,7 @@ int mmc_pm_notify(struct notifier_block *notify_block,
>  		break;
>  
>  	case PM_POST_SUSPEND:
> -	case PM_POST_HIBERNATION:
> +	case PM_POST_RESTORE:
>  
>  		spin_lock_irqsave(&host->lock, flags);
>  		host->rescan_disable = 0;

So that was the case....
Takasi, thank you very much.

I always use the 'unsafe resume' thing so I wasn't affected.

Best regards,
	Maxim Levitsky


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