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Commit e4eca2a1 authored by Laurent FERT's avatar Laurent FERT Committed by Greg Kroah-Hartman
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intel_th: msu: Fix offset for wrapped block 



Fix offset for the second pass on the wrapped block when iterating over
memory in multi-block mode, otherwise wrong part of the block will get
copied.

Signed-off-by: default avatarLaurent FERT <laurent.fert@intel.com>
Signed-off-by: default avatarAlexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 4d02ceff

drivers/hwtracing/intel_th/msu.c

+1 −1
Original line number Diff line number Diff line
@@ -408,7 +408,7 @@ msc_buffer_iterate(struct msc_iter *iter, size_t size, void *data, 
		 * Second time (wrap_count==1), it's just like any other block,

		 * containing data in the range of [MSC_BDESC..data_bytes].

		 */

		if (iter->block == iter->start_block && iter->wrap_count) {

		if (iter->block == iter->start_block && iter->wrap_count == 2) {

			tocopy = DATA_IN_PAGE - data_bytes;

			src += data_bytes;

		}