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Date: Fri, 30 Jun 2017 11:41:56 -0600
From: Mathieu Poirier <mathieu.poirier@...aro.org>
To: linux-arm-kernel@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH 2/5] coresight: etb10: Remove useless conversion to LE
Internal CoreSight components are rendering trace data in little-endian
format. As such there is no need to convert the data once more, hence
removing the extra step.
Signed-off-by: Mathieu Poirier <mathieu.poirier@...aro.org>
---
drivers/hwtracing/coresight/coresight-etb10.c | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/drivers/hwtracing/coresight/coresight-etb10.c b/drivers/hwtracing/coresight/coresight-etb10.c
index d9c233135d6d..50f4846e6271 100644
--- a/drivers/hwtracing/coresight/coresight-etb10.c
+++ b/drivers/hwtracing/coresight/coresight-etb10.c
@@ -233,10 +233,8 @@ static void etb_dump_hw(struct etb_drvdata *drvdata)
for (i = 0; i < depth; i++) {
read_data = readl_relaxed(drvdata->base +
ETB_RAM_READ_DATA_REG);
- *buf_ptr++ = read_data >> 0;
- *buf_ptr++ = read_data >> 8;
- *buf_ptr++ = read_data >> 16;
- *buf_ptr++ = read_data >> 24;
+ *(u32 *)buf_ptr = read_data;
+ buf_ptr += 4;
}
if (frame_off) {
@@ -444,10 +442,8 @@ static void etb_update_buffer(struct coresight_device *csdev,
buf_ptr = buf->data_pages[cur] + offset;
read_data = readl_relaxed(drvdata->base +
ETB_RAM_READ_DATA_REG);
- *buf_ptr++ = read_data >> 0;
- *buf_ptr++ = read_data >> 8;
- *buf_ptr++ = read_data >> 16;
- *buf_ptr++ = read_data >> 24;
+ *(u32 *)buf_ptr = read_data;
+ buf_ptr += 4;
offset += 4;
if (offset >= PAGE_SIZE) {
--
2.7.4
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