Unverified Commit 39e9c376 authored by Kaushlendra Kumar's avatar Kaushlendra Kumar Committed by Ilpo Järvinen
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platform/x86: intel_telemetry: Fix PSS event register mask 



The PSS telemetry info parsing incorrectly applies
TELEM_INFO_SRAMEVTS_MASK when extracting event register
count from firmware response. This reads bits 15-8 instead
of the correct bits 7-0, causing misdetection of hardware
capabilities.

The IOSS path correctly uses TELEM_INFO_NENABLES_MASK for
register count. Apply the same mask to PSS parsing for
consistency.

Fixes: 9d16b482 ("platform:x86: Add Intel telemetry platform driver")
Signed-off-by: default avatarKaushlendra Kumar <kaushlendra.kumar@intel.com>
Link: https://patch.msgid.link/20251224061144.3925519-1-kaushlendra.kumar@intel.com


Reviewed-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
parent 25e9e322

drivers/platform/x86/intel/telemetry/pltdrv.c

+1 −1
Original line number Diff line number Diff line
@@ -610,7 +610,7 @@ static int telemetry_setup(struct platform_device *pdev) 
	/* Get telemetry Info */

	events = (read_buf & TELEM_INFO_SRAMEVTS_MASK) >>

		  TELEM_INFO_SRAMEVTS_SHIFT;

	event_regs = read_buf & TELEM_INFO_SRAMEVTS_MASK;

	event_regs = read_buf & TELEM_INFO_NENABLES_MASK;

	if ((events < TELEM_MAX_EVENTS_SRAM) ||

	    (event_regs < TELEM_MAX_EVENTS_SRAM)) {

		dev_err(&pdev->dev, "PSS:Insufficient Space for SRAM Trace\n");