linux-kernel - Re: [PATCH 5/5]scsi:hosts.c Fix warning: variable 'rval' set but not used

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Message-ID: <4C1A4A69.7060801@gmail.com>
Date:	Thu, 17 Jun 2010 09:16:41 -0700
From:	"Justin P. Mattock" <justinmattock@...il.com>
To:	James Bottomley <James.Bottomley@...e.de>
CC:	linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org,
	linux-pci@...r.kernel.org, linux-scsi@...r.kernel.org
Subject: Re: [PATCH 5/5]scsi:hosts.c Fix warning: variable 'rval' set but
 not used


> Erm, well, as I said, error code and the fact that the thread failed to
> start, so more
>
> printk(KERN_WARNING "scsi%d: error handler thread failed to spawn, error
> = %d\n", host->host_no, PTR_ERR(shost->ehandler));
>
> James
>

o.k. I looked at this a bit more and finally got the thing to build 
through without a warning, using what you had sent, but keep in mind I 
still need to add error  = %d\n", host->host_no, to the printk

here's what I have so far:


  drivers/scsi/hosts.c |    3 ++-
  1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
index 6660fa9..c1ff708 100644
--- a/drivers/scsi/hosts.c
+++ b/drivers/scsi/hosts.c
@@ -419,8 +419,9 @@ struct Scsi_Host *scsi_host_alloc(struct 
scsi_host_template *sht, int privsize)

  	shost->ehandler = kthread_run(scsi_error_handler, shost,
  			"scsi_eh_%d", shost->host_no);
+	rval = PTR_ERR(shost->ehandler);
  	if (IS_ERR(shost->ehandler)) {
-		rval = PTR_ERR(shost->ehandler);
+		printk(KERN_WARNING "scsi%d: error handler thread failed to spawn\n", 
rval);
  		goto fail_kfree;
  	}

I'll continue to look at this today!!

cheers,

Justin P. Mattock
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