Re: [PATCH] check the return value of __copy_to_user in drivers/pcmcia/ds.c::ds_ioctl and return -EFAULT if it fails

From: Christoph Hellwig
Date: Wed Oct 06 2004 - 05:47:43 EST


On Wed, Oct 06, 2004 at 12:21:58AM +0200, Jesper Juhl wrote:
>
> CC drivers/pcmcia/ds.o
> include/asm/uaccess.h: In function `ds_ioctl':
> drivers/pcmcia/ds.c:1049: warning: ignoring return value of `__copy_to_user', declared with attribute warn_unused_result
>
> Patch adds a check of the return value and returns -EFAULT if
> __copy_to_user fails.

I think this function should use the non-__ prefix version and remove access_ok
again

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