ata/libata-eh.c: introduce ATA_FLAG_NO_LOG_PAGE

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