bd_contains is an implementation detail and should not be mentioned in
a userspace API documentation.

Signed-off-by: Christoph Hellwig <h...@lst.de>
---
 Documentation/userspace-api/ioctl/hdio.rst | 24 +++++++++++-----------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/Documentation/userspace-api/ioctl/hdio.rst 
b/Documentation/userspace-api/ioctl/hdio.rst
index e822e3dff1769b..817371bf94e948 100644
--- a/Documentation/userspace-api/ioctl/hdio.rst
+++ b/Documentation/userspace-api/ioctl/hdio.rst
@@ -181,7 +181,7 @@ HDIO_SET_UNMASKINTR
 
 
        error return:
-         - EINVAL      (bdev != bdev->bd_contains) (not sure what this means)
+         - EINVAL      Called on a partition instead of the whole disk device
          - EACCES      Access denied:  requires CAP_SYS_ADMIN
          - EINVAL      value out of range [0 1]
          - EBUSY       Controller busy
@@ -231,7 +231,7 @@ HDIO_SET_MULTCOUNT
 
 
        error return:
-         - EINVAL      (bdev != bdev->bd_contains) (not sure what this means)
+         - EINVAL      Called on a partition instead of the whole disk device
          - EACCES      Access denied:  requires CAP_SYS_ADMIN
          - EINVAL      value out of range supported by disk.
          - EBUSY       Controller busy or blockmode already set.
@@ -295,7 +295,7 @@ HDIO_GET_IDENTITY
                the ATA specification.
 
        error returns:
-         - EINVAL      (bdev != bdev->bd_contains) (not sure what this means)
+         - EINVAL      Called on a partition instead of the whole disk device
          - ENOMSG      IDENTIFY DEVICE information not available
 
        notes:
@@ -355,7 +355,7 @@ HDIO_SET_KEEPSETTINGS
 
 
        error return:
-         - EINVAL      (bdev != bdev->bd_contains) (not sure what this means)
+         - EINVAL      Called on a partition instead of the whole disk device
          - EACCES      Access denied:  requires CAP_SYS_ADMIN
          - EINVAL      value out of range [0 1]
          - EBUSY               Controller busy
@@ -1055,7 +1055,7 @@ HDIO_SET_32BIT
 
 
        error return:
-         - EINVAL      (bdev != bdev->bd_contains) (not sure what this means)
+         - EINVAL      Called on a partition instead of the whole disk device
          - EACCES      Access denied:  requires CAP_SYS_ADMIN
          - EINVAL      value out of range [0 3]
          - EBUSY       Controller busy
@@ -1085,7 +1085,7 @@ HDIO_SET_NOWERR
 
 
        error return:
-         - EINVAL      (bdev != bdev->bd_contains) (not sure what this means)
+         - EINVAL      Called on a partition instead of the whole disk device
          - EACCES      Access denied:  requires CAP_SYS_ADMIN
          - EINVAL      value out of range [0 1]
          - EBUSY               Controller busy
@@ -1113,7 +1113,7 @@ HDIO_SET_DMA
 
 
        error return:
-         - EINVAL      (bdev != bdev->bd_contains) (not sure what this means)
+         - EINVAL      Called on a partition instead of the whole disk device
          - EACCES      Access denied:  requires CAP_SYS_ADMIN
          - EINVAL      value out of range [0 1]
          - EBUSY       Controller busy
@@ -1141,7 +1141,7 @@ HDIO_SET_PIO_MODE
 
 
        error return:
-         - EINVAL      (bdev != bdev->bd_contains) (not sure what this means)
+         - EINVAL      Called on a partition instead of the whole disk device
          - EACCES      Access denied:  requires CAP_SYS_ADMIN
          - EINVAL      value out of range [0 255]
          - EBUSY       Controller busy
@@ -1237,7 +1237,7 @@ HDIO_SET_WCACHE
 
 
        error return:
-         - EINVAL      (bdev != bdev->bd_contains) (not sure what this means)
+         - EINVAL      Called on a partition instead of the whole disk device
          - EACCES      Access denied:  requires CAP_SYS_ADMIN
          - EINVAL      value out of range [0 1]
          - EBUSY       Controller busy
@@ -1265,7 +1265,7 @@ HDIO_SET_ACOUSTIC
 
 
        error return:
-         - EINVAL      (bdev != bdev->bd_contains) (not sure what this means)
+         - EINVAL      Called on a partition instead of the whole disk device
          - EACCES      Access denied:  requires CAP_SYS_ADMIN
          - EINVAL      value out of range [0 254]
          - EBUSY       Controller busy
@@ -1305,7 +1305,7 @@ HDIO_SET_ADDRESS
 
 
        error return:
-         - EINVAL      (bdev != bdev->bd_contains) (not sure what this means)
+         - EINVAL      Called on a partition instead of the whole disk device
          - EACCES      Access denied:  requires CAP_SYS_ADMIN
          - EINVAL      value out of range [0 2]
          - EBUSY               Controller busy
@@ -1331,7 +1331,7 @@ HDIO_SET_IDE_SCSI
 
 
        error return:
-         - EINVAL      (bdev != bdev->bd_contains) (not sure what this means)
+         - EINVAL      Called on a partition instead of the whole disk device
          - EACCES      Access denied:  requires CAP_SYS_ADMIN
          - EINVAL      value out of range [0 1]
          - EBUSY       Controller busy
-- 
2.28.0

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