From: Finn Thain <fthain@telegraphics.com.au>
To: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Michael Schmitz <schmitzmic@gmail.com>,
linux-m68k@vger.kernel.org, linux-scsi@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: Ondrej Zary <linux@rainbow-software.org>, Sam Creasey <sammy@sammy.net>
Subject: [PATCH 14/22] ncr5380: Add MAX_LUN limit
Date: Mon, 14 Mar 2016 15:27:14 +1100 [thread overview]
Message-ID: <20160314042704.285983735@telegraphics.com.au> (raw)
In-Reply-To: 20160314042700.596192247@telegraphics.com.au
[-- Attachment #1: ncr5380-MAX_LUN --]
[-- Type: text/plain, Size: 1222 bytes --]
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;
};
next prev parent reply other threads:[~2016-03-14 4:27 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-14 4:27 [PATCH 00/22] ncr5380: Eliminate macros, reduce code duplication, fix bugs etc Finn Thain
2016-03-14 4:27 ` [PATCH 01/22] g_ncr5380: Remove CONFIG_SCSI_GENERIC_NCR53C400 Finn Thain
2016-03-14 7:21 ` Hannes Reinecke
2016-03-14 4:27 ` [PATCH 02/22] ncr5380: Remove FLAG_NO_PSEUDO_DMA where possible Finn Thain
2016-03-14 7:21 ` Hannes Reinecke
2016-03-14 4:27 ` [PATCH 03/22] ncr5380: Remove REAL_DMA and REAL_DMA_POLL macros Finn Thain
2016-03-14 7:23 ` Hannes Reinecke
2016-03-14 4:27 ` [PATCH 04/22] atari_NCR5380: Remove DMA_MIN_SIZE macro Finn Thain
2016-03-14 7:25 ` Hannes Reinecke
2016-03-15 3:18 ` Finn Thain
2016-03-14 4:27 ` [PATCH 05/22] ncr5380: Disable the DMA errata workaround flag by default Finn Thain
2016-03-14 7:26 ` Hannes Reinecke
2016-03-14 4:27 ` [PATCH 06/22] ncr5380: Remove PSEUDO_DMA macro Finn Thain
2016-03-14 7:28 ` Hannes Reinecke
2016-03-14 4:27 ` [PATCH 07/22] ncr5380: Remove BOARD_REQUIRES_NO_DELAY macro Finn Thain
2016-03-14 7:33 ` Hannes Reinecke
2016-03-14 4:27 ` [PATCH 08/22] ncr5380: Use DMA hooks for PDMA Finn Thain
2016-03-14 7:34 ` Hannes Reinecke
2016-03-14 4:27 ` [PATCH 09/22] ncr5380: Adopt uniform DMA setup convention Finn Thain
2016-03-14 7:36 ` Hannes Reinecke
2016-03-15 3:19 ` Finn Thain
2016-03-15 6:49 ` Hannes Reinecke
2016-03-14 4:27 ` [PATCH 10/22] ncr5380: Merge DMA implementation from atari_NCR5380 core driver Finn Thain
2016-03-14 7:38 ` Hannes Reinecke
2016-03-14 4:27 ` [PATCH 11/22] atari_scsi: Adopt NCR5380.c " Finn Thain
2016-03-14 7:39 ` Hannes Reinecke
2016-03-14 4:27 ` [PATCH 12/22] sun3_scsi: " Finn Thain
2016-03-14 7:40 ` Hannes Reinecke
2016-03-14 4:27 ` [PATCH 13/22] ncr5380: Remove disused atari_NCR5380.c " Finn Thain
2016-03-14 7:42 ` Hannes Reinecke
2016-03-14 4:27 ` Finn Thain [this message]
2016-03-14 7:43 ` [PATCH 14/22] ncr5380: Add MAX_LUN limit Hannes Reinecke
2016-03-14 7:51 ` Christoph Hellwig
2016-03-15 3:20 ` Finn Thain
2016-03-15 8:26 ` Christoph Hellwig
2016-03-14 4:27 ` [PATCH 15/22] dmx3191d: Drop max_sectors limit Finn Thain
2016-03-14 7:43 ` Hannes Reinecke
2016-03-14 4:27 ` [PATCH 16/22] ncr5380: Fix register decoding for debugging Finn Thain
2016-03-14 7:46 ` Hannes Reinecke
2016-03-15 3:21 ` Finn Thain
2016-03-14 4:27 ` [PATCH 17/22] ncr5380: Remove remaining register storage qualifiers Finn Thain
2016-03-14 7:46 ` Hannes Reinecke
2016-03-14 4:27 ` [PATCH 18/22] ncr5380: Remove DONT_USE_INTR and AUTOPROBE_IRQ macros Finn Thain
2016-03-14 7:47 ` Hannes Reinecke
2016-03-14 4:27 ` [PATCH 19/22] ncr5380: Update usage documentation Finn Thain
2016-03-14 7:47 ` Hannes Reinecke
2016-03-14 4:27 ` [PATCH 20/22] atari_scsi: Set a reasonable default for cmd_per_lun Finn Thain
2016-03-14 7:49 ` Hannes Reinecke
2016-03-15 3:27 ` Finn Thain
2016-03-15 6:53 ` Hannes Reinecke
2016-03-15 8:27 ` Finn Thain
2016-03-15 14:34 ` James Bottomley
2016-03-14 4:27 ` [PATCH 21/22] atari_scsi: Allow can_queue to be increased for Falcon Finn Thain
2016-03-14 7:58 ` Hannes Reinecke
2016-03-14 4:27 ` [PATCH 22/22] mac_scsi: Fix pseudo DMA implementation Finn Thain
2016-03-14 7:59 ` Hannes Reinecke
2016-03-18 7:03 ` [PATCH 00/22] ncr5380: Eliminate macros, reduce code duplication, fix bugs etc Michael Schmitz
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