linux-kernel - [BUG ?] pmcraid: condition with no effect

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Message-Id: <1434191965-5780-1-git-send-email-hofrat@osadl.org>
Date:	Sat, 13 Jun 2015 12:39:25 +0200
From:	Nicholas Mc Guire <hofrat@...dl.org>
To:	Anil Ravindranath <anil_ravindranath@...-sierra.com>
Cc:	"James E.J. Bottomley" <JBottomley@...n.com>,
	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
	Nicholas Mc Guire <hofrat@...dl.org>
Subject: [BUG ?] pmcraid: condition with no effect                   


scanning for trivial bug-patters with coccinelle spatches returned:
./drivers/scsi/pmcraid.c:1603
        WARNING: condition with no effect (if branch == else)

introduced in 'commit c20c426732a5 ("[SCSI] pmcraid: MSI-X support and other changes")'

drivers/scsi/pmcraid.c - line numbers from 4.1-rc7
1603         if (fw_version <= PMCRAID_FW_VERSION_1)
1604                 hidden_entry = (cfg_entry->unique_flags1 & 0x80) != 0;
1605         else            
1606                 hidden_entry = (cfg_entry->unique_flags1 & 0x80) != 0;

As "hidden_entry = (cfg_entry->unique_flags1 & 0x80) != 0;" is probing the
bit the if condition simply looks unnecessary - if this "fix" would do is
not clear though without knowing details of the driver.

thx!
hofrat
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