From: Joe Perches <joe@perches.com>
To: Larry Finger <Larry.Finger@lwfinger.net>,
Andy Whitcroft <apw@canonical.com>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: Re: Inconsistency in scripts/checkpatch.pl
Date: Thu, 29 Jun 2017 20:12:31 -0700 [thread overview]
Message-ID: <1498792351.2739.8.camel@perches.com> (raw)
In-Reply-To: <70ae7b56-7fcd-9677-4768-e8a7343c5d75@lwfinger.net>
On Thu, 2017-06-29 at 20:26 -0500, Larry Finger wrote:
> Andy and Joe,
>
> In some new rtlwifi code, I get the following for one of the new macros:
>
> CHECK: Macro argument '__h2c' may be better as '(__h2c)' to avoid precedence issues
> #45005: FILE:
> drivers/net/wireless/realtek/rtlwifi/halmac/halmac_original_h2c_nic.h:1163:
> +#define AOAC_RSVD_PAGE3_GET_LOC_AOAC_REPORT(__h2c) \
> + LE_BITS_TO_4BYTE(__h2c + 0X00, 16, 8)
>
> When I make that change, I get
>
> CHECK: No space is necessary after a cast
> #45004: FILE:
> drivers/net/wireless/realtek/rtlwifi/halmac/halmac_original_h2c_nic.h:1162:
> + LE_BITS_TO_4BYTE((__h2c) + 0X00, 16, 8)
>
> Which CHECK should I fix?
The first. Only if you want to.
> To my eye, the second form is the false positive.
I agree. Ignore the 2nd warning for awhile.
.
A few trivial notes:
o 0X00 is kinda ugly to me. 0x00 is nicer.
o I presume that 0x00 could be a #define somewhere
o AOAC_RSVD_PAGE3_GET_LOC_AOAC_REPORT is a rather
long identifier at 35 chars.
prev parent reply other threads:[~2017-06-30 3:12 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-30 1:26 Larry Finger
2017-06-30 3:12 ` Joe Perches [this message]
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