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libata: add ATA_HORKAGE_MAX_SEC_1024 to revert back to previous max_sectors limit

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Since no longer limiting max_sectors to BLK_DEF_MAX_SECTORS (commit 34b48db66e),
data corruption may occur on ST380013AS drive configured on 82801JI (ICH10 Family)
SATA controller. This patch will allow the driver to limit max_sectors as before

 # cat /sys/block/sdb/queue/max_sectors_kb
 512

I was able to double the max_sectors_kb value up to 16384 on linux-4.2.0-rc2
before seeing corruption, but seems safer to use previous limit. Without this
patch max_sectors_kb will be 32767.

tj: Minor comment update.

Reported-by: Jeff Moyer <[email protected]>
Signed-off-by: David Milburn <[email protected]>
Signed-off-by: Tejun Heo <[email protected]>
Cc: [email protected] # v3.19 and later
Fixes: 34b48db66e ("block: remove artifical max_hw_sectors cap")
This commit is contained in:
David Milburn 2015-07-13 11:48:23 -05:00 • committed by Tejun Heo
commit af34d63763
3 changed files with 12 additions and 1 deletions
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10
drivers/ata/libata-core.c
View file

@ -2478,6 +2478,10 @@ int ata_dev_configure(struct ata_device *dev)
dev->max_sectors = min_t(unsigned int, ATA_MAX_SECTORS_128,
dev->max_sectors);
if (dev->horkage & ATA_HORKAGE_MAX_SEC_1024)
dev->max_sectors = min_t(unsigned int, ATA_MAX_SECTORS_1024,
dev->max_sectors);
if (dev->horkage & ATA_HORKAGE_MAX_SEC_LBA48)
dev->max_sectors = ATA_MAX_SECTORS_LBA48;
@ -4146,6 +4150,12 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
{ "Slimtype DVD A DS8A8SH", NULL, ATA_HORKAGE_MAX_SEC_LBA48 },
{ "Slimtype DVD A DS8A9SH", NULL, ATA_HORKAGE_MAX_SEC_LBA48 },
/*
* Causes silent data corruption with higher max sects.
* http://lkml.kernel.org/g/[email protected]
*/
{ "ST380013AS", "3.20", ATA_HORKAGE_MAX_SEC_1024 },
/* Devices we expect to fail diagnostics */
/* Devices where NCQ should be avoided */