Subject: Re: linux-next: build failure after merge of the scsi tree

From: Stephen Rothwell <[email-masked]>
Date: Mon, 13 Feb 2017 11:32:26 +1100

Hi all,

On Mon, 6 Feb 2017 16:04:51 +1100 Stephen Rothwell <[email-masked]> wrote:
>
> After merging the scsi tree, today's linux-next build (powerpc
> ppc64_defconfig) failed like this:
> 
> In file included from include/uapi/linux/stddef.h:1:0,
>                  from include/linux/stddef.h:4,
>                  from include/uapi/linux/posix_types.h:4,
>                  from include/uapi/linux/types.h:13,
>                  from include/linux/types.h:5,
>                  from include/linux/list.h:4,
>                  from include/linux/module.h:9,
>                  from drivers/scsi/mpt3sas/mpt3sas_scsih.c:45:
> drivers/scsi/mpt3sas/mpt3sas_scsih.c: In function '_scsih_io_done':
> drivers/scsi/mpt3sas/mpt3sas_scsih.c:4750:28: error: 'struct request' has no member named 'cmd_type'
>   if (unlikely(scmd->request->cmd_type == REQ_TYPE_FS && sector_sz &&
>                             ^
> include/linux/compiler.h:179:42: note: in definition of macro 'unlikely'
>  # define unlikely(x) __builtin_expect(!!(x), 0)
>                                           ^
> drivers/scsi/mpt3sas/mpt3sas_scsih.c:4750:42: error: 'REQ_TYPE_FS' undeclared (first use in this function)
>   if (unlikely(scmd->request->cmd_type == REQ_TYPE_FS && sector_sz &&
>                                           ^
> include/linux/compiler.h:179:42: note: in definition of macro 'unlikely'
>  # define unlikely(x) __builtin_expect(!!(x), 0)
>                                           ^
> drivers/scsi/mpt3sas/mpt3sas_scsih.c:4750:42: note: each undeclared identifier is reported only once for each function it appears in
>   if (unlikely(scmd->request->cmd_type == REQ_TYPE_FS && sector_sz &&
>                                           ^
> include/linux/compiler.h:179:42: note: in definition of macro 'unlikely'
>  # define unlikely(x) __builtin_expect(!!(x), 0)
>                                           ^
> 
> Caused by commit
> 
>   f2e767bb5d6e ("scsi: mpt3sas: Force request partial completion alignment")
> 
> interacting with commit
> 
>   aebf526b53ae ("block: fold cmd_type into the REQ_OP_ space")
> 
> from the block tree.
> 
> I have applied teh following merge fix patch:
> 
> From: Stephen Rothwell <[email-masked]>
> Date: Mon, 6 Feb 2017 16:00:54 +1100
> Subject: [PATCH] scsi: mpt3sas: fix up for "block: fold cmd_type into the
>  REQ_OP_ space"
> 
> Signed-off-by: Stephen Rothwell <[email-masked]>
> ---
>  drivers/scsi/mpt3sas/mpt3sas_scsih.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
> index 5f7b0c7d7e4d..81a64678390d 100644
> --- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c
> +++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
> @@ -4747,7 +4747,7 @@ _scsih_io_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
>  	 * then scsi-ml does not need to handle this misbehavior.
>  	 */
>  	sector_sz = scmd->device->sector_size;
> -	if (unlikely(scmd->request->cmd_type == REQ_TYPE_FS && sector_sz &&
> +	if (unlikely(!blk_rq_is_passthrough(scmd->request) && sector_sz &&
>  		     xfer_cnt % sector_sz)) {
>  		sdev_printk(KERN_INFO, scmd->device,
>  		    "unaligned partial completion avoided (xfer_cnt=%u, sector_sz=%u)\n",
> -- 
> 2.10.2

The scsi tree commit has been merged into Linus' tree, so this
interaction occurs between tyhe block tree and Linus' tree, now.

-- 
Cheers,
Stephen Rothwell