[v2 0/2] ata/libata-eh.c: introduce ATA_FLAG_NO_LOG_PAGE

From: Andreas Werner
Date: Fri Dec 04 2015 - 12:14:32 EST


This patchset add a new ata port flag ATA_FLAG_NO_LOG_PAGE to be able
to blacklist ports/controller which e.g. locks up on a log page read.

This flag is added to the sata_fsl driver which is the first affected
one.

The lockup was detected on Freescale P1013/P1022, T4240 using a ATP
mSATA.
The device failed during initialisation if the SATA device includes the
devslp feature.

With this patchset, we blacklist the fsl sata controller and return
a error on any attempt to read a log page. This allows us to access
the mSATA.

Changes in v2:
fixed the build issue detected by the kbuild test robot

Andreas Werner (2):
libata-eh.c: Introduce new ata port flag for controller which lockup
on read log page
ata/sata_fsl.c: add ATA_FLAG_NO_LOG_PAGE to blacklist the controller
for log page reads

drivers/ata/libata-eh.c | 9 +++++++++
drivers/ata/sata_fsl.c | 3 ++-
include/linux/libata.h | 1 +
3 files changed, 12 insertions(+), 1 deletion(-)

--
2.6.2

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/