linux-kernel - Re: [PATCH v3 3/5] char: ti-usim: Add driver for USIM module on AM43xx

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Date:	Thu, 29 May 2014 08:53:49 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Satish Patel <satish.patel@...com>
Cc:	Rob Herring <robherring2@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	linux-omap <linux-omap@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Rob Landley <rob@...dley.net>,
	Tony Lindgren <tony@...mide.com>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robh+dt@...nel.org>
Subject: Re: [PATCH v3 3/5] char: ti-usim: Add driver for USIM module on
 AM43xx

On Thu, May 29, 2014 at 03:35:37PM +0530, Satish Patel wrote:
> >>+enum usim_card_mode {
> >>+       USIM_CARD_MODE_ASYNC = 0,       /* asynchronous mode */
> >>+       USIM_CARD_MODE_SYNC_TYPE1,      /* synchronous mode: Type 1 */
> >>+       USIM_CARD_MODE_SYNC_TYPE2,      /* synchronous mode: Type 2 */
> >>+       USIM_CARD_MODE_SYNC_OTHER,      /* Any other synchronous type */
> >>+};
> >>+struct usim_data {
> >>+       int slot;
> >>+       int rxexplen;
> >>+       int txlen;
> >>+       unsigned char apdu[256];
> >>+};

You need to use the proper variable types for a structure that is going
to cross the user/kernel boundry in an ioctl :(

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