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Subject[PATCH 3/4] Update documentation of HDIO_DRIVE_RESET ioctl
Alter the entry for HDIO_DRIVE_RESET in Documentation/ioctl/hdio.txt to
reflect a functional change in the driver. Besides, the entry has been
inaccurate before.

Signed-off-by: Elias Oltmanns <>

Documentation/ioctl/hdio.txt | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/Documentation/ioctl/hdio.txt b/Documentation/ioctl/hdio.txt
index c19efde..a859734 100644
--- a/Documentation/ioctl/hdio.txt
+++ b/Documentation/ioctl/hdio.txt
@@ -508,12 +508,12 @@ HDIO_DRIVE_RESET execute a device reset

error returns:
EACCES Access denied: requires CAP_SYS_ADMIN
+ EBUSY Device busy: reset operation in progress already


- Abort any current command, prevent anything else from being
- queued, execute a reset on the device, and issue BLKRRPART
- ioctl on the block device.
+ Execute a reset on the device as soon as the current IO
+ operation has completed.

Executes an ATAPI soft reset if applicable, otherwise
executes an ATA soft reset on the controller.

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