Re: scsi/arm/fas216.c compile error

Russell King
2008-02-10T22:02:46Z

On Sun, Feb 10, 2008 at 08:20:24AM -0600, James Bottomley wrote:
>
> On Sun, 2008-02-10 at 13:58 +0000, Russell King wrote:
> > On Sun, Feb 10, 2008 at 03:07:09PM +0200, Boaz Harrosh wrote:
> > > It's in mainline 84ac86ca8c6787f9efff28bc04b1b65fe0a5c310
> > > [SCSI] arm: convert to accessors and !use_sg cleanup
> > >
> > > Thanks for checking. This patch was in scsi-pending tree since forever, And we were unable
> > > to get a responsive maintainer to ACK on them. until the breakage cause went into mainline
> > > we finally managed a Tested-by:.
> > >
> > > I guess sometimes people are so busy, you need a bulldozer to shove 20 minutes into they're
> > > schedule.
> >
> > Oh, I was ill for most of December, particularly at the time that you
> > sent the patch, and by the time I recovered, it was buried in my mailbox.
> >
> > Suggest you have some consideration for others who might not be able to
> > do your beg and call at the immediate moment that you want it, and
> > consider that their email management skills may not be as l33t as yours.
>
> OK, sorry about this, it's a bit of a cockup all around. The patch that
> fixes this problem is still in SCSI pending largely because it's patch
> description:
>
> [SCSI] fas216: Use scsi_eh API for REQUEST_SENSE invocation
>
> Doesn't lead one to think it might be build critical, so I concentrated
> on getting the other arm patch out.
>
> Russell, could you give it a quick test, and I'll put it in with a
> tested-by tag?

It's not looking good:

CC drivers/scsi/arm/fas216.o
drivers/scsi/arm/fas216.c: In function `fas216_rq_sns_done':
drivers/scsi/arm/fas216.c:2021: warning: passing arg 2 of `scsi_eh_restore_cmnd' from incompatible pointer type
drivers/scsi/arm/fas216.c: In function `fas216_std_done':
drivers/scsi/arm/fas216.c:2107: warning: passing arg 2 of `scsi_eh_prep_cmnd' from incompatible pointer type

Since the second argument of scsi_eh_prep_cmnd is 'struct scsi_eh_save *ses'
this patch is most definitely bad. Not even booted it.

>
> Thanks,
>
> James
>
> ---
>
> From: Boaz Harrosh <bharrosh@panasas.com>
> Date: Mon, 10 Sep 2007 22:39:11 +0300
> Subject: [SCSI] fas216: Use scsi_eh API for REQUEST_SENSE invocation
>
> - Use new scsi_eh_prep/restor_cmnd() for synchronous
> REQUEST_SENSE invocation.
>
> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
> Cc: Russell King <rmk@arm.linux.org.uk>
> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
> ---
> drivers/scsi/arm/fas216.c | 16 +++-------------
> drivers/scsi/arm/fas216.h | 3 +++
> 2 files changed, 6 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/scsi/arm/fas216.c b/drivers/scsi/arm/fas216.c
> index fb5f202..a715632 100644
> --- a/drivers/scsi/arm/fas216.c
> +++ b/drivers/scsi/arm/fas216.c
> @@ -2018,6 +2018,7 @@ static void fas216_rq_sns_done(FAS216_Info *info, struct scsi_cmnd *SCpnt,
> * the upper layers to process. This would have been set
> * correctly by fas216_std_done.
> */
> + scsi_eh_restore_cmnd(SCpnt, &info->ses);
> SCpnt->scsi_done(SCpnt);
> }
>
> @@ -2103,23 +2104,12 @@ request_sense:
> if (SCpnt->cmnd[0] == REQUEST_SENSE)
> goto done;
>
> + scsi_eh_prep_cmnd(SCpnt, &info->ses, NULL, 0, ~0);
> fas216_log_target(info, LOG_CONNECT, SCpnt->device->id,
> "requesting sense");
> - memset(SCpnt->cmnd, 0, sizeof (SCpnt->cmnd));
> - SCpnt->cmnd[0] = REQUEST_SENSE;
> - SCpnt->cmnd[1] = SCpnt->device->lun << 5;
> - SCpnt->cmnd[4] = sizeof(SCpnt->sense_buffer);
> - SCpnt->cmd_len = COMMAND_SIZE(SCpnt->cmnd[0]);
> - SCpnt->SCp.buffer = NULL;
> - SCpnt->SCp.buffers_residual = 0;
> - SCpnt->SCp.ptr = (char *)SCpnt->sense_buffer;
> - SCpnt->SCp.this_residual = sizeof(SCpnt->sense_buffer);
> - SCpnt->SCp.phase = sizeof(SCpnt->sense_buffer);
> + init_SCp(SCpnt);
> SCpnt->SCp.Message = 0;
> SCpnt->SCp.Status = 0;
> - SCpnt->request_bufflen = sizeof(SCpnt->sense_buffer);
> - SCpnt->sc_data_direction = DMA_FROM_DEVICE;
> - SCpnt->use_sg = 0;
> SCpnt->tag = 0;
> SCpnt->host_scribble = (void *)fas216_rq_sns_done;
>
> diff --git a/drivers/scsi/arm/fas216.h b/drivers/scsi/arm/fas216.h
> index 00e5f05..3e73e26 100644
> --- a/drivers/scsi/arm/fas216.h
> +++ b/drivers/scsi/arm/fas216.h
> @@ -16,6 +16,8 @@
> #define NO_IRQ 255
> #endif
>
> +#include <scsi/scsi_eh.h>
> +
> #include "queue.h"
> #include "msgqueue.h"
>
> @@ -311,6 +313,7 @@ typedef struct {
>
> /* miscellaneous */
> int internal_done; /* flag to indicate request done */
> + struct scsi_eh_save *ses; /* holds request sense restore info */

Looks to me like this line has a stray '*' on?

> unsigned long magic_end;
> } FAS216_Info;

--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/