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| author | Kaushlendra Kumar <kaushlendra.kumar@intel.com> | 2025-12-24 11:41:44 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-02-11 13:37:24 +0100 |
| commit | e923071a02944776bbe2f6cbec1cdc6cc0f66cd5 (patch) | |
| tree | c7afb397251da297a5e800c9483bfa79cfcfae25 | |
| parent | f2093e87ddec13e7a920f326c078a5f765ba89c3 (diff) | |
| download | linux-e923071a02944776bbe2f6cbec1cdc6cc0f66cd5.tar.gz linux-e923071a02944776bbe2f6cbec1cdc6cc0f66cd5.tar.bz2 linux-e923071a02944776bbe2f6cbec1cdc6cc0f66cd5.zip | |
platform/x86: intel_telemetry: Fix PSS event register mask
[ Upstream commit 39e9c376ac42705af4ed4ae39eec028e8bced9b4 ]
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: 9d16b482b059 ("platform:x86: Add Intel telemetry platform driver")
Signed-off-by: Kaushlendra Kumar <kaushlendra.kumar@intel.com>
Link: https://patch.msgid.link/20251224061144.3925519-1-kaushlendra.kumar@intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/platform/x86/intel/telemetry/pltdrv.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/platform/x86/intel/telemetry/pltdrv.c b/drivers/platform/x86/intel/telemetry/pltdrv.c index 405dea87de6b..dd1ee2730b6a 100644 --- a/drivers/platform/x86/intel/telemetry/pltdrv.c +++ b/drivers/platform/x86/intel/telemetry/pltdrv.c @@ -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"); |