linux-kernel - Re: [PATCH] Fix section mismatch in the Adaptec DPT SCSI Raid driver

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Date:	Fri, 17 Aug 2007 19:01:30 -0400
From:	Joe Korty <joe.korty@...r.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Matthew Wilcox <matthew@....cx>
Cc:	aacraid@...ptec.com, linux-scsi@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Fix section mismatch in the Adaptec DPT SCSI Raid driver

On Fri, Aug 17, 2007 at 02:18:56PM -0700, Andrew Morton wrote:
> Please always provide at least a copy of the error message when providing
> patches which fix warnings, or build errors, or section mismatches.
> 
> For section mismatches, an analysis of what caused the problem would help,
> too.  It saves others from having to do the same thing.
> 
> In this case, I'd need to see what error is being fixed so that I can judge
> the seriousness of the problem.  In this case I don't _think_ it'll be
> terribly serious because iirc most architectures don't free exitcall memory.




Fix section mismatch in the Adaptec DPT SCSI Raid driver.

WARNING: vmlinux.o(.init.text+0x1fcd2): Section mismatch:
	reference to .exit.text:adpt_exit (between 'adpt_init' and 'ahc_linux_init')

This warning is due to adaptec device detection calling the exit routine
on failure to properly register the adaptec device.

The exit routine + call was added on July 30 by
  Commit: 55d9fcf57ba5ec427544fca7abc335cf3da78160
  Author: Matthew Wilcox
  Subject: [SCSI] dpt_i2o: convert to SCSI hotplug model.

Mathew: isn't a module exit routine a little too strong to be calling
on the failure of a single device?  Module exit implies that other,
non-failing adaptec raid devices will also get shut down.

Signed-off-by: Joe Korty <joe.korty@...r.com>

Index: 2.6.23-rc3-git1/drivers/scsi/dpt_i2o.c
===================================================================
--- 2.6.23-rc3-git1.orig/drivers/scsi/dpt_i2o.c	2007-08-17 16:36:05.000000000 -0400
+++ 2.6.23-rc3-git1/drivers/scsi/dpt_i2o.c	2007-08-17 16:50:13.000000000 -0400
@@ -3351,7 +3351,7 @@
 	return count > 0 ? 0 : -ENODEV;
 }
 
-static void __exit adpt_exit(void)
+static void adpt_exit(void)
 {
 	while (hba_chain)
 		adpt_release(hba_chain);
-
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