cxgb4: Fix incorrect sequence numbers shown in devlog

Part of commit 49aa284fe64c4c1 ("cxgb4: Add support for devlog")
change introduced a real bug where the Device Log Sequence Numbers are
no longer being converted from firmware Big-Endian to local CPU-Endian
format.

This patch moves all of the translation into the devlog_show() routine.
The only endianness code now in devlog_open() is the small loop to find the
earliest (lowest Sequence Number) Device Log entry in the circular buffer.

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
index 484eb8c..a11485f 100644 (file)
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
@@ -952,16 +952,23 @@ static int devlog_show(struct seq_file *seq, void *v)
                 * eventually have to put a format interpreter in here ...
                 */
                seq_printf(seq, "%10d  %15llu  %8s  %8s  ",
-                          e->seqno, e->timestamp,
+                          be32_to_cpu(e->seqno),
+                          be64_to_cpu(e->timestamp),
                           (e->level < ARRAY_SIZE(devlog_level_strings)
                            ? devlog_level_strings[e->level]
                            : "UNKNOWN"),
                           (e->facility < ARRAY_SIZE(devlog_facility_strings)
                            ? devlog_facility_strings[e->facility]
                            : "UNKNOWN"));
-               seq_printf(seq, e->fmt, e->params[0], e->params[1],
-                          e->params[2], e->params[3], e->params[4],
-                          e->params[5], e->params[6], e->params[7]);
+               seq_printf(seq, e->fmt,
+                          be32_to_cpu(e->params[0]),
+                          be32_to_cpu(e->params[1]),
+                          be32_to_cpu(e->params[2]),
+                          be32_to_cpu(e->params[3]),
+                          be32_to_cpu(e->params[4]),
+                          be32_to_cpu(e->params[5]),
+                          be32_to_cpu(e->params[6]),
+                          be32_to_cpu(e->params[7]));
        }
        return 0;
 }
@@ -1043,23 +1050,17 @@ static int devlog_open(struct inode *inode, struct file *file)
                return ret;
        }
 
-       /* Translate log multi-byte integral elements into host native format
-        * and determine where the first entry in the log is.
+       /* Find the earliest (lowest Sequence Number) log entry in the
+        * circular Device Log.
         */
        for (fseqno = ~((u32)0), index = 0; index < dinfo->nentries; index++) {
                struct fw_devlog_e *e = &dinfo->log[index];
-               int i;
                __u32 seqno;
 
                if (e->timestamp == 0)
                        continue;
 
-               e->timestamp = (__force __be64)be64_to_cpu(e->timestamp);
                seqno = be32_to_cpu(e->seqno);
-               for (i = 0; i < 8; i++)
-                       e->params[i] =
-                               (__force __be32)be32_to_cpu(e->params[i]);
-
                if (seqno < fseqno) {
                        fseqno = seqno;
                        dinfo->first = index;