coresight: tmc: Refactor loops in etb dump

In ETB dump function tmc_etb_dump_hw() it has nested loops.  The second
level loop is to iterate index in the range [0 .. drvdata->memwidth);
but the index isn't really used in the code, thus the second level
loop is useless.

This patch is to remove the second level loop; the refactor also reduces
indentation and we can use 'break' to replace 'goto' tag.

Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 7 insertions, 10 deletions

diff --git a/drivers/hwtracing/coresight/coresight-tmc-etf.c b/drivers/hwtracing/coresight/coresight-tmc-etf.c
index 4156c95ce1bb..4bf3bfd7c078 100644
--- a/drivers/hwtracing/coresight/coresight-tmc-etf.c
+++ b/drivers/hwtracing/coresight/coresight-tmc-etf.c
@@ -38,23 +38,20 @@ static void tmc_etb_dump_hw(struct tmc_drvdata *drvdata)
 {
         char *bufp;
         u32 read_data, lost;
-        int i;
 
         /* Check if the buffer wrapped around. */
         lost = readl_relaxed(drvdata->base + TMC_STS) & TMC_STS_FULL;
         bufp = drvdata->buf;
         drvdata->len = 0;
         while (1) {
-                for (i = 0; i < drvdata->memwidth; i++) {
-                        read_data = readl_relaxed(drvdata->base + TMC_RRD);
-                        if (read_data == 0xFFFFFFFF)
-                                goto done;
-                        memcpy(bufp, &read_data, 4);
-                        bufp += 4;
-                        drvdata->len += 4;
-                }
+                read_data = readl_relaxed(drvdata->base + TMC_RRD);
+                if (read_data == 0xFFFFFFFF)
+                        break;
+                memcpy(bufp, &read_data, 4);
+                bufp += 4;
+                drvdata->len += 4;
         }
-done:
+
         if (lost)
                 coresight_insert_barrier_packet(drvdata->buf);
         return;