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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Shivnandan Kumar <shivnandan.k@samsung.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
	vidushi.koul@samsung.com, gaurav.k6@samsung.com,
	nitin.gupta@samsung.com, rajat.suri@samsung.com,
	p.shailesh@samsung.com, shiv.jnumca08@gmail.com,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] char:misc minor is overflowing
Date: Mon, 21 Dec 2015 13:43:33 -0800	[thread overview]
Message-ID: <20151221214333.GA3108@kroah.com> (raw)
In-Reply-To: <1448013934-8213-1-git-send-email-shivnandan.k@samsung.com>

On Fri, Nov 20, 2015 at 03:35:34PM +0530, Shivnandan Kumar wrote:
>  When a driver register as a misc driver and 
>  it tries to allocate  minor number dynamically.
>  Then there is a chance of minor number overflow.
>  The problem is that 64(DYNAMIC_MINORS) is not enough 
>  for dynamic minor number and if kernel defines 0-63
>  for dynamic minor number, it should be reserved.

What system do you have that we have more than 63 dynamic minors being
asked for?  We should turn some of them into "real" minors if you rely
on too many of these.

thanks,

greg k-h

  reply	other threads:[~2015-12-21 21:43 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-11-20 10:05 Shivnandan Kumar
2015-12-21 21:43 ` Greg Kroah-Hartman [this message]
2015-12-09 12:51 Fwd: " Nitin Gupta
2015-12-09 13:35 ` One Thousand Gnomes

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