diff options
| author | Hannes Reinecke <hare@suse.de> | 2008-04-18 13:57:20 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-08-06 10:10:56 -0700 |
| commit | b6eb09b2fcf2b5d928f582ae866ab073820518e6 (patch) | |
| tree | 1fccde0a0ff2704fad95913a6d55246de79cab7f | |
| parent | f4323dc41d8d1af7bc439816007f86559fc7e405 (diff) | |
| download | lwn-b6eb09b2fcf2b5d928f582ae866ab073820518e6.tar.gz lwn-b6eb09b2fcf2b5d928f582ae866ab073820518e6.zip | |
SCSI: megaraid_mbox: fix Dell CERC firmware problem
commit 69cd39e94669e2994277a29249b6ef93b088ddbb upstream
Newer Dell CERC firmware (>= 6.62) implement a random deletion handling
compatible with the legacy megaraid driver. The legacy handling shifted
the target ID by 0x80 only for I/O commands (READ/WRITE/etc), whereas
megaraid_mbox shifts the target ID always if random deletion is supported.
The resulted in megaraid_mbox sending an INQUIRY to the wrong channel, and
not finding any devices, obviously.
So we disable the random deletion support if the offending firmware is
found.
Addresses http://bugzilla.kernel.org/show_bug.cgi?id=6695
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Bo Yang <Bo.Yang@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_mbox.c | 17 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_mbox.h | 1 |
2 files changed, 18 insertions, 0 deletions
diff --git a/drivers/scsi/megaraid/megaraid_mbox.c b/drivers/scsi/megaraid/megaraid_mbox.c index 9f041929aca5..2d0ee60df107 100644 --- a/drivers/scsi/megaraid/megaraid_mbox.c +++ b/drivers/scsi/megaraid/megaraid_mbox.c @@ -3168,6 +3168,23 @@ megaraid_mbox_support_random_del(adapter_t *adapter) uint8_t raw_mbox[sizeof(mbox_t)]; int rval; + /* + * Newer firmware on Dell CERC expect a different + * random deletion handling, so disable it. + */ + if (adapter->pdev->vendor == PCI_VENDOR_ID_AMI && + adapter->pdev->device == PCI_DEVICE_ID_AMI_MEGARAID3 && + adapter->pdev->subsystem_vendor == PCI_VENDOR_ID_DELL && + adapter->pdev->subsystem_device == PCI_SUBSYS_ID_CERC_ATA100_4CH && + (adapter->fw_version[0] > '6' || + (adapter->fw_version[0] == '6' && + adapter->fw_version[2] > '6') || + (adapter->fw_version[0] == '6' + && adapter->fw_version[2] == '6' + && adapter->fw_version[3] > '1'))) { + con_log(CL_DLEVEL1, ("megaraid: disable random deletion\n")); + return 0; + } mbox = (mbox_t *)raw_mbox; diff --git a/drivers/scsi/megaraid/megaraid_mbox.h b/drivers/scsi/megaraid/megaraid_mbox.h index 626459d1e902..c1d86d961a92 100644 --- a/drivers/scsi/megaraid/megaraid_mbox.h +++ b/drivers/scsi/megaraid/megaraid_mbox.h @@ -88,6 +88,7 @@ #define PCI_SUBSYS_ID_PERC3_QC 0x0471 #define PCI_SUBSYS_ID_PERC3_DC 0x0493 #define PCI_SUBSYS_ID_PERC3_SC 0x0475 +#define PCI_SUBSYS_ID_CERC_ATA100_4CH 0x0511 #define MBOX_MAX_SCSI_CMDS 128 // number of cmds reserved for kernel |