linux-kernel - Re: [PATCH] Revert "mmc: block: don't use parameter prefix if built as module"

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Date:	Thu, 11 Feb 2016 09:19:41 -0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Ulf Hansson <ulf.hansson@...aro.org>
Cc:	linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
	John Stultz <john.stultz@...aro.org>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: Re: [PATCH] Revert "mmc: block: don't use parameter prefix if built
 as module"

On Thu, Feb 11, 2016 at 04:54:11PM +0100, Ulf Hansson wrote:
> This reverts commit 829b6962f7e3cfc06f7c5c26269fd47ad48cf503.
> 
> Revert this change as it causes a sysfs path to change and therefore
> introduces and ABI regression. More precisely Android's vold is not being
> able to access /sys/module/mmcblk/parameters/perdev_minors any more, since
> the path becomes changed to: "/sys/module/mmc_block/..."
> 
> Fixes: 829b6962f7e3 ("mmc: block: don't use parameter prefix if built as
> module")
> Reported-by: John Stultz <john.stultz@...aro.org>
> Cc: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>

Please also add a "cc: stable..." tag to the patch so it gets picked up
in stable kernel releases.

thanks,

greg k-h