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Date:   Wed, 6 Dec 2017 10:13:45 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Kai-Heng Feng <kai.heng.feng@...onical.com>
Cc:     corbet@....net, linux-usb@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] usb: core: Add "quirks" parameter for usbcore

On Wed, Dec 06, 2017 at 05:09:32PM +0800, Kai-Heng Feng wrote:
> +/* Works only for digits and letters, but small and fast */
> +#define TOLOWER(x) ((x) | 0x20)

What is wrong with the in-kernel version of tolower()?

thanks,

greg k-h

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