mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-04 00:15:49 -04:00
Code Issues Packages Projects Releases Wiki Activity

platform/x86: ISST: Use only TPMI interface when present

Browse Source 
When the TPMI interface is present, use this interface instead of legacy.
On some systems legacy IO device is also present. Using both interfaces
together is confusing and may set the hardware in inconsistent state.

When TPMI interface is present, don't load legacy drivers.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20240531083554.1313110-4-srinivas.pandruvada@linux.intel.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Srinivas Pandruvada
2024-05-31 01:35:48 -07:00
committed by Ilpo Järvinen
parent 3ea025fb4b
commit 2f9514f005
1 changed files with 3 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/platform/x86/intel/speed_select_if/isst_if_common.c
View File

@@ -775,6 +775,9 @@ int isst_if_cdev_register(int device_type, struct isst_if_cmd_cb *cb)
if (device_type >= ISST_IF_DEV_MAX)
return -EINVAL;
if (device_type < ISST_IF_DEV_TPMI && isst_hpm_support)
return -ENODEV;
mutex_lock(&punit_misc_dev_open_lock);
/* Device is already open, we don't want to add new callbacks */
if (misc_device_open) {