1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index 0a8567c48d97..0b299b0f8172 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -1358,6 +1358,16 @@ fsm_start:
                                         qc->err_mask |= AC_ERR_HSM;
                                 }
 
+                                /* There are oddball controllers with
+                                 * status register stuck at 0x7f and
+                                 * lbal/m/h at zero which makes it
+                                 * pass all other presence detection
+                                 * mechanisms we have.  Set NODEV_HINT
+                                 * for it.  Kernel bz#7241.
+                                 */
+                                if (status == 0x7f)
+                                        qc->err_mask |= AC_ERR_NODEV_HINT;
+
                                 /* ata_pio_sectors() might change the
                                  * state to HSM_ST_LAST. so, the state
                                  * is changed after ata_pio_sectors().