Hello!
After updating from 2.4.25-libata1 to 2.4.25-libata9 the sata_via
driver stopped working. The module loads and even seems to detect
the presense of drives, but the SCSI-emulation devices are not
registered:
===== messages hand-copied from screen =====
sata_via (00:0f.0) routed to hard irq line 11
ata1: SATA max UDMA/133 cmd 0xB800 ctl 0xBC02 bmdma 0xC800 irq 20
ata2: SATA max UDMA/133 cmd 0xC000 ctl 0xC402 bmdma 0xC808 irq 20
ata1: dev 0 ATA, max UDMA7, 234493056 sectors (lba48)
ata2: no device found (phy stat 00000000)
===== end of messages from sata_via =====
The machine does not hang - booting fails later, because the root
device is not accessible.
2.4.25-libata1 worked fine on the same hardware:
===== log from a successful boot ======
libata version 1.00 loaded.
sata_via version 0.11
ata1: SATA max UDMA/133 cmd 0xB800 ctl 0xBC02 bmdma 0xC800 irq 20
ata2: SATA max UDMA/133 cmd 0xC000 ctl 0xC402 bmdma 0xC808 irq 20
ata1: dev 0 cfg 49:2f00 82:346b 83:7f01 84:4003 85:3c68 86:3c01 87:4003 88:80ff
ata1: dev 0 ATA, max UDMA7, 234493056 sectors (lba48)
ata1: dev 0 configured for UDMA/133
ATA: abnormal status 0x7F on port 0xC007
ata2: thread exiting
scsi0 : sata_via
scsi1 : sata_via
Vendor: ATA Model: SAMSUNG SP1213C Rev: 1.00
Type: Direct-Access ANSI SCSI revision: 05
Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
SCSI device sda: 234493056 512-byte hdwr sectors (120060 MB)
===== end =====
Seems that the problem is caused by changes in the device
initialization - calling ata_device_add() from svia_init_one() does
not work (at least with the 2.4.x SCSI layer). The following patch
solves the initialization problem:
--- kernel-source-2.4.25/drivers/scsi/sata_via.c.sata_via-init-fix 2004-03-22 14:03:31 +0300
+++ kernel-source-2.4.25/drivers/scsi/sata_via.c 2004-03-24 16:27:50 +0300
@@ -264,9 +264,7 @@ static int svia_init_one (struct pci_dev
pci_set_master(pdev);
- /* FIXME: check ata_device_add return value */
- ata_device_add(probe_ent);
- kfree(probe_ent);
+ ata_add_to_probe_list(probe_ent);
return 0;
--
Sergey Vlasov
# This is a BitKeeper generated diff -Nru style patch.
#
# ChangeSet
# 2004/03/24 13:07:52-05:00 [email protected]
# [libata] Fix probing bug in VIA, SiS drivers
#
# Some 2.6 code leaked into the 2.4 backport.
#
# Spotted by Sergey Vlasov.
#
# drivers/scsi/sata_via.c
# 2004/03/24 13:07:50-05:00 [email protected] +1 -3
# [libata] Fix probing bug in VIA, SiS drivers
#
# Some 2.6 code leaked into the 2.4 backport.
#
# Spotted by Sergey Vlasov.
#
# drivers/scsi/sata_sis.c
# 2004/03/24 13:07:50-05:00 [email protected] +1 -3
# [libata] Fix probing bug in VIA, SiS drivers
#
# Some 2.6 code leaked into the 2.4 backport.
#
# Spotted by Sergey Vlasov.
#
diff -Nru a/drivers/scsi/sata_sis.c b/drivers/scsi/sata_sis.c
--- a/drivers/scsi/sata_sis.c Wed Mar 24 13:08:01 2004
+++ b/drivers/scsi/sata_sis.c Wed Mar 24 13:08:01 2004
@@ -182,9 +182,7 @@
pci_set_master(pdev);
pci_enable_intx(pdev);
- /* FIXME: check ata_device_add return value */
- ata_device_add(probe_ent);
- kfree(probe_ent);
+ ata_add_to_probe_list(probe_ent);
return 0;
diff -Nru a/drivers/scsi/sata_via.c b/drivers/scsi/sata_via.c
--- a/drivers/scsi/sata_via.c Wed Mar 24 13:08:01 2004
+++ b/drivers/scsi/sata_via.c Wed Mar 24 13:08:01 2004
@@ -264,9 +264,7 @@
pci_set_master(pdev);
- /* FIXME: check ata_device_add return value */
- ata_device_add(probe_ent);
- kfree(probe_ent);
+ ata_add_to_probe_list(probe_ent);
return 0;
Jeff Garzik wrote:
> Sergey Vlasov wrote:
>
>> Hello!
>>
>> After updating from 2.4.25-libata1 to 2.4.25-libata9 the sata_via
>> driver stopped working. The module loads and even seems to detect
>> the presense of drives, but the SCSI-emulation devices are not
>> registered:
>
> [...]
>
>> Seems that the problem is caused by changes in the device
>> initialization - calling ata_device_add() from svia_init_one() does
>> not work (at least with the 2.4.x SCSI layer). The following patch
>> solves the initialization problem:
>>
>> --- kernel-source-2.4.25/drivers/scsi/sata_via.c.sata_via-init-fix
>> 2004-03-22 14:03:31 +0300
>> +++ kernel-source-2.4.25/drivers/scsi/sata_via.c 2004-03-24
>> 16:27:50 +0300
>> @@ -264,9 +264,7 @@ static int svia_init_one (struct pci_dev
>>
>> pci_set_master(pdev);
>>
>> - /* FIXME: check ata_device_add return value */
>> - ata_device_add(probe_ent);
>> - kfree(probe_ent);
>> + ata_add_to_probe_list(probe_ent);
>>
>> return 0;
>
>
> Ah, indeed. A bug in the 2.4 backport. Seems to be present in sata_sis
> too.
>
> Thanks for spotting, I just checked in the attached patch.
FYI, this fix is in the 2.4.x patch just posted,
http://www.kernel.org/pub/linux/kernel/people/jgarzik/libata/2.4.25-libata12.patch.bz2