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authorLaurent FERT <laurent.fert@intel.com>2016-02-15 19:11:56 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-02-20 14:09:14 -0800
commite4eca2a1c71fda33cd8b5aacc7744176e440f80d (patch)
treeac97f9ccb2a0b3f8740da512ab571372fa3c6044 /drivers/hwtracing
parent4d02ceff32f35f3ea745be6114503c2d2505da99 (diff)
downloadlinux-e4eca2a1c71fda33cd8b5aacc7744176e440f80d.tar.bz2
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: Laurent FERT <laurent.fert@intel.com> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing')
-rw-r--r--drivers/hwtracing/intel_th/msu.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c
index 70ca27e45602..3c793bbf6ab2 100644
--- a/drivers/hwtracing/intel_th/msu.c
+++ b/drivers/hwtracing/intel_th/msu.c
@@ -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;
}