platform/x86: ISST: Check for admin capability for write commands

Browse source

In some SST deployments, administrators want to allow reading SST
capabilities for non-root users. This can be achieved by changing file
permissions for "/dev/isst_interface", but they still want to prevent
any changes to the SST configuration by non-root users.

This capability was available before for non-TPMI SST. Extend the same
capability for TPMI SST by adding a check for CAP_SYS_ADMIN for all
write commands.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://patch.msgid.link/20260107060729.1634420-1-srinivas.pandruvada@linux.intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

...

This commit is contained in:

Srinivas Pandruvada 2026-01-06 22:07:29 -08:00 • committed by Ilpo Järvinen

parent dc7901b5a1

commit 69cd1ca440

No known key found for this signature in database

GPG key ID: 59AC4F6153E5CE31

1 changed files with 6 additions and 5 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

11

drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c

View file