Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.14 188/849] coresight: trbe: Fix incorrect access of the sink specific data | Date | Mon, 15 Nov 2021 17:54:31 +0100 |
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From: Suzuki K Poulose <suzuki.poulose@arm.com>
commit bb5293e334af51b19b62d8bef1852ea13e935e9b upstream.
The TRBE driver wrongly treats the aux private data as the TRBE driver specific buffer for a given perf handle, while it is the ETM PMU's event specific data. Fix this by correcting the instance to use appropriate helper.
Cc: stable <stable@vger.kernel.org> Fixes: 3fbf7f011f24 ("coresight: sink: Add TRBE driver") Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com> Link: https://lore.kernel.org/r/20210921134121.2423546-2-suzuki.poulose@arm.com [Fixed 13 character SHA down to 12] Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/hwtracing/coresight/coresight-trbe.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/hwtracing/coresight/coresight-trbe.c +++ b/drivers/hwtracing/coresight/coresight-trbe.c @@ -366,7 +366,7 @@ static unsigned long __trbe_normal_offse static unsigned long trbe_normal_offset(struct perf_output_handle *handle) { - struct trbe_buf *buf = perf_get_aux(handle); + struct trbe_buf *buf = etm_perf_sink_config(handle); u64 limit = __trbe_normal_offset(handle); u64 head = PERF_IDX2OFF(handle->head, buf);
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