linux-kernel - Re: [PATCH] Staging: line6: fix parentheses around macro in usbdefs.h

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Date:	Wed, 03 Dec 2014 10:45:58 -0800
From:	Joe Perches <joe@...ches.com>
To:	Sam van Kampen <sam@...svk.net>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Chris Bajumpaa <cbajumpa@...il.com>,
	Monam Agarwal <monamagarwal123@...il.com>,
	Davide Berardi <berardi.dav@...il.com>,
	devel@...verdev.osuosl.org
Subject: Re: [PATCH] Staging: line6: fix parentheses around macro in
 usbdefs.h

On Wed, 2014-12-03 at 19:34 +0100, Sam van Kampen wrote:
> This patch fixes the error "Macros with complex values should be enclosed in
> parentheses", as reported by checkpatch.pl.
[]
> diff --git a/drivers/staging/line6/usbdefs.h b/drivers/staging/line6/usbdefs.h
[]
> @@ -40,7 +40,7 @@
>  #define LINE6_DEVID_TONEPORT_UX2  0x4142
>  #define LINE6_DEVID_VARIAX        0x534d
>  
> -#define LINE6_BIT(x) LINE6_BIT_ ## x = 1 << LINE6_INDEX_ ## x
> +#define LINE6_BIT(x) (LINE6_BIT_ ## x = 1 << LINE6_INDEX_ ## x)

The uses are pretty ugly.

It'd probably be nicer if all the LINE6_BIT uses were
direct enum declarations instead.



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