Documentation: ACPI: EINJ: Fix obsolete example

commit 9066e151c37950af92c3be6a7270daa8e8063db9 upstream.

Since commit 488dac0c9237 ("libfs: fix error cast of negative value in
simple_attr_write()"), the EINJ debugfs interface no longer accepts
negative values as input. Attempt to do so will result in EINVAL.

Fixes: 488dac0c9237 ("libfs: fix error cast of negative value in simple_attr_write()")
Signed-off-by: Qifu Zhang <zhangqifu@bytedance.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/Documentation/firmware-guide/acpi/apei/einj.rst b/Documentation/firmware-guide/acpi/apei/einj.rst
index c042176..50ac87f 100644 (file)
--- a/Documentation/firmware-guide/acpi/apei/einj.rst
+++ b/Documentation/firmware-guide/acpi/apei/einj.rst
@@ -168,7 +168,7 @@ An error injection example::
   0x00000008   Memory Correctable
   0x00000010   Memory Uncorrectable non-fatal
   # echo 0x12345000 > param1           # Set memory address for injection
-  # echo $((-1 << 12)) > param2                # Mask 0xfffffffffffff000 - anywhere in this page
+  # echo 0xfffffffffffff000 > param2           # Mask - anywhere in this page
   # echo 0x8 > error_type                      # Choose correctable memory error
   # echo 1 > error_inject                      # Inject now