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Groups > linux.kernel > #1357012
| From | Hannes Reinecke <hare@suse.de> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH 14/22] ncr5380: Add MAX_LUN limit |
| Date | 2016-03-14 08:50 +0100 |
| Message-ID | <rcvqh-KB-7@gated-at.bofh.it> (permalink) |
| References | <rcsC5-7iI-3@gated-at.bofh.it> <rcsC7-7iI-37@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 03/14/2016 05:27 AM, Finn Thain wrote:
> The driver has a limit of eight LUs because of the byte-sized bitfield
> that is used for busy flags. Reject commands with LUN > 7.
>
> Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
>
> ---
> drivers/scsi/NCR5380.c | 6 ++++++
> drivers/scsi/NCR5380.h | 2 ++
> 2 files changed, 8 insertions(+)
>
> Index: linux/drivers/scsi/NCR5380.c
> ===================================================================
> --- linux.orig/drivers/scsi/NCR5380.c 2016-03-14 15:26:45.000000000 +1100
> +++ linux/drivers/scsi/NCR5380.c 2016-03-14 15:26:48.000000000 +1100
> @@ -661,6 +661,12 @@ static int NCR5380_queue_command(struct
> }
> #endif /* (NDEBUG & NDEBUG_NO_WRITE) */
>
> + if (cmd->device->lun > MAX_LUN) {
> + cmd->result = DID_NO_CONNECT << 16;
> + cmd->scsi_done(cmd);
> + return 0;
> + }
> +
> cmd->result = 0;
>
> if (!NCR5380_acquire_dma_irq(instance))
> Index: linux/drivers/scsi/NCR5380.h
> ===================================================================
> --- linux.orig/drivers/scsi/NCR5380.h 2016-03-14 15:26:45.000000000 +1100
> +++ linux/drivers/scsi/NCR5380.h 2016-03-14 15:26:48.000000000 +1100
> @@ -244,6 +244,8 @@ struct NCR5380_hostdata {
>
> #ifdef __KERNEL__
>
> +#define MAX_LUN 7
> +
> struct NCR5380_cmd {
> struct list_head list;
> };
>
>
Why not simply use shost->max_lun ?
Cheers,
Hannes
--
Dr. Hannes Reinecke Teamlead Storage & Networking
hare@suse.de +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
HRB 21284 (AG Nürnberg)
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[PATCH 00/22] ncr5380: Eliminate macros, reduce code duplication, fix bugs etc Finn Thain <fthain@telegraphics.com.au> - 2016-03-14 05:50 +0100
[PATCH 09/22] ncr5380: Adopt uniform DMA setup convention Finn Thain <fthain@telegraphics.com.au> - 2016-03-14 05:50 +0100
Re: [PATCH 09/22] ncr5380: Adopt uniform DMA setup convention Hannes Reinecke <hare@suse.de> - 2016-03-14 08:40 +0100
Re: [PATCH 09/22] ncr5380: Adopt uniform DMA setup convention Finn Thain <fthain@telegraphics.com.au> - 2016-03-15 04:30 +0100
Re: [PATCH 09/22] ncr5380: Adopt uniform DMA setup convention Hannes Reinecke <hare@suse.de> - 2016-03-15 08:00 +0100
[PATCH 05/22] ncr5380: Disable the DMA errata workaround flag by default Finn Thain <fthain@telegraphics.com.au> - 2016-03-14 05:50 +0100
[PATCH 12/22] sun3_scsi: Adopt NCR5380.c core driver Finn Thain <fthain@telegraphics.com.au> - 2016-03-14 05:50 +0100
[PATCH 06/22] ncr5380: Remove PSEUDO_DMA macro Finn Thain <fthain@telegraphics.com.au> - 2016-03-14 05:50 +0100
[PATCH 17/22] ncr5380: Remove remaining register storage qualifiers Finn Thain <fthain@telegraphics.com.au> - 2016-03-14 05:50 +0100
[PATCH 11/22] atari_scsi: Adopt NCR5380.c core driver Finn Thain <fthain@telegraphics.com.au> - 2016-03-14 05:50 +0100
Re: [PATCH 11/22] atari_scsi: Adopt NCR5380.c core driver Hannes Reinecke <hare@suse.de> - 2016-03-14 08:40 +0100
[PATCH 15/22] dmx3191d: Drop max_sectors limit Finn Thain <fthain@telegraphics.com.au> - 2016-03-14 05:50 +0100
[PATCH 14/22] ncr5380: Add MAX_LUN limit Finn Thain <fthain@telegraphics.com.au> - 2016-03-14 05:50 +0100
Re: [PATCH 14/22] ncr5380: Add MAX_LUN limit Hannes Reinecke <hare@suse.de> - 2016-03-14 08:50 +0100
Re: [PATCH 14/22] ncr5380: Add MAX_LUN limit Christoph Hellwig <hch@infradead.org> - 2016-03-14 09:00 +0100
Re: [PATCH 14/22] ncr5380: Add MAX_LUN limit Finn Thain <fthain@telegraphics.com.au> - 2016-03-15 04:30 +0100
Re: [PATCH 14/22] ncr5380: Add MAX_LUN limit Christoph Hellwig <hch@infradead.org> - 2016-03-15 09:30 +0100
[PATCH 07/22] ncr5380: Remove BOARD_REQUIRES_NO_DELAY macro Finn Thain <fthain@telegraphics.com.au> - 2016-03-14 05:50 +0100
[PATCH 20/22] atari_scsi: Set a reasonable default for cmd_per_lun Finn Thain <fthain@telegraphics.com.au> - 2016-03-14 05:50 +0100
Re: [PATCH 20/22] atari_scsi: Set a reasonable default for cmd_per_lun Hannes Reinecke <hare@suse.de> - 2016-03-14 08:50 +0100
Re: [PATCH 20/22] atari_scsi: Set a reasonable default for cmd_per_lun Finn Thain <fthain@telegraphics.com.au> - 2016-03-15 04:30 +0100
Re: [PATCH 20/22] atari_scsi: Set a reasonable default for cmd_per_lun Hannes Reinecke <hare@suse.de> - 2016-03-15 08:00 +0100
Re: [PATCH 20/22] atari_scsi: Set a reasonable default for cmd_per_lun Finn Thain <fthain@telegraphics.com.au> - 2016-03-15 09:30 +0100
Re: [PATCH 20/22] atari_scsi: Set a reasonable default for cmd_per_lun James Bottomley <James.Bottomley@HansenPartnership.com> - 2016-03-15 15:40 +0100
[PATCH 08/22] ncr5380: Use DMA hooks for PDMA Finn Thain <fthain@telegraphics.com.au> - 2016-03-14 05:50 +0100
[PATCH 18/22] ncr5380: Remove DONT_USE_INTR and AUTOPROBE_IRQ macros Finn Thain <fthain@telegraphics.com.au> - 2016-03-14 05:50 +0100
[PATCH 22/22] mac_scsi: Fix pseudo DMA implementation Finn Thain <fthain@telegraphics.com.au> - 2016-03-14 05:50 +0100
[PATCH 02/22] ncr5380: Remove FLAG_NO_PSEUDO_DMA where possible Finn Thain <fthain@telegraphics.com.au> - 2016-03-14 05:50 +0100
[PATCH 16/22] ncr5380: Fix register decoding for debugging Finn Thain <fthain@telegraphics.com.au> - 2016-03-14 05:50 +0100
Re: [PATCH 16/22] ncr5380: Fix register decoding for debugging Hannes Reinecke <hare@suse.de> - 2016-03-14 08:50 +0100
Re: [PATCH 16/22] ncr5380: Fix register decoding for debugging Finn Thain <fthain@telegraphics.com.au> - 2016-03-15 04:30 +0100
[PATCH 19/22] ncr5380: Update usage documentation Finn Thain <fthain@telegraphics.com.au> - 2016-03-14 05:50 +0100
[PATCH 21/22] atari_scsi: Allow can_queue to be increased for Falcon Finn Thain <fthain@telegraphics.com.au> - 2016-03-14 05:50 +0100
Re: [PATCH 21/22] atari_scsi: Allow can_queue to be increased for Falcon Hannes Reinecke <hare@suse.de> - 2016-03-14 09:00 +0100
[PATCH 10/22] ncr5380: Merge DMA implementation from atari_NCR5380 core driver Finn Thain <fthain@telegraphics.com.au> - 2016-03-14 05:50 +0100
[PATCH 01/22] g_ncr5380: Remove CONFIG_SCSI_GENERIC_NCR53C400 Finn Thain <fthain@telegraphics.com.au> - 2016-03-14 06:00 +0100
Re: [PATCH 01/22] g_ncr5380: Remove CONFIG_SCSI_GENERIC_NCR53C400 Hannes Reinecke <hare@suse.de> - 2016-03-14 08:30 +0100
[PATCH 03/22] ncr5380: Remove REAL_DMA and REAL_DMA_POLL macros Finn Thain <fthain@telegraphics.com.au> - 2016-03-14 06:00 +0100
Re: [PATCH 03/22] ncr5380: Remove REAL_DMA and REAL_DMA_POLL macros Hannes Reinecke <hare@suse.de> - 2016-03-14 08:30 +0100
[PATCH 04/22] atari_NCR5380: Remove DMA_MIN_SIZE macro Finn Thain <fthain@telegraphics.com.au> - 2016-03-14 06:00 +0100
Re: [PATCH 04/22] atari_NCR5380: Remove DMA_MIN_SIZE macro Hannes Reinecke <hare@suse.de> - 2016-03-14 08:30 +0100
Re: [PATCH 04/22] atari_NCR5380: Remove DMA_MIN_SIZE macro Finn Thain <fthain@telegraphics.com.au> - 2016-03-15 04:20 +0100
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