linux-kernel - Re: [PATCH 4/6] scsi: qedf: fix LTO-enabled build

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Date:   Wed, 7 Feb 2018 10:38:20 -0500 (EST)
From:   Chad Dupuis <chad.dupuis@...ium.com>
To:     Arnd Bergmann <arnd@...db.de>
cc:     linux-scsi@...r.kernel.org,
        "James E . J . Bottomley" <jejb@...ux.vnet.ibm.com>,
        QLogic-Storage-Upstream@...ium.com,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Nicolas Pitre <nico@...aro.org>,
        Andi Kleen <ak@...ux.intel.com>,
        Nilesh Javali <nilesh.javali@...ium.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/6] scsi: qedf: fix LTO-enabled build


On Fri, 2 Feb 2018, 8:12am, Arnd Bergmann wrote:

> The prototype for qedf_dbg_fops/qedf_debugfs_ops doesn't match the definition,
> which causes the final link to fail with link-time optimizations:
> 
> drivers/scsi/qedf/qedf_main.c:34: error: type of 'qedf_dbg_fops' does not match original declaration [-Werror=lto-type-mismatch]
>  extern struct file_operations qedf_dbg_fops;
> 
> drivers/scsi/qedf/qedf_debugfs.c:443: note: 'qedf_dbg_fops' was previously declared here
>  const struct file_operations qedf_dbg_fops[] = {
> 
> drivers/scsi/qedf/qedf_main.c:33: error: type of 'qedf_debugfs_ops' does not match original declaration [-Werror=lto-type-mismatch]
>  extern struct qedf_debugfs_ops qedf_debugfs_ops;
> 
> drivers/scsi/qedf/qedf_debugfs.c:102: note: 'qedf_debugfs_ops' was previously declared here
>  struct qedf_debugfs_ops qedf_debugfs_ops[] = {
> 
> This corrects the prototype and moves it into a shared header file where it
> belongs. The file operations can also be marked 'const' like the
> qedf_debugfs_ops.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>  drivers/scsi/qedf/qedf_dbg.h     | 17 ++++++++++-------
>  drivers/scsi/qedf/qedf_debugfs.c |  6 +++---
>  drivers/scsi/qedf/qedf_main.c    |  8 +++-----
>  3 files changed, 16 insertions(+), 15 deletions(-)
> 

Thanks.

Acked-by: Chad Dupuis <chad.dupuis@...ium.com>