via-rhine: fix dma mapping errors

[cascardo/linux.git] / drivers / s390 / scsi / zfcp_dbf.c

diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c
index 3c1d220..132a905 100644 (file)
--- a/drivers/s390/scsi/zfcp_dbf.c
+++ b/drivers/s390/scsi/zfcp_dbf.c
@@ -3,7 +3,7 @@
  *
  * Debug traces for zfcp.
  *
- * Copyright IBM Corp. 2002, 2010
+ * Copyright IBM Corp. 2002, 2013
  */
 
 #define KMSG_COMPONENT "zfcp"
@@ -23,6 +23,13 @@ module_param(dbfsize, uint, 0400);
 MODULE_PARM_DESC(dbfsize,
                 "number of pages for each debug feature area (default 4)");
 
+static u32 dbflevel = 3;
+
+module_param(dbflevel, uint, 0400);
+MODULE_PARM_DESC(dbflevel,
+                "log level for each debug feature area "
+                "(default 3, range 0..6)");
+
 static inline unsigned int zfcp_dbf_plen(unsigned int offset)
 {
        return sizeof(struct zfcp_dbf_pay) + offset - ZFCP_DBF_PAY_MAX_REC;
@@ -191,7 +198,7 @@ void zfcp_dbf_hba_def_err(struct zfcp_adapter *adapter, u64 req_id, u16 scount,
        length = min((u16)sizeof(struct qdio_buffer),
                     (u16)ZFCP_DBF_PAY_MAX_REC);
 
-       while ((char *)pl[payload->counter] && payload->counter < scount) {
+       while (payload->counter < scount && (char *)pl[payload->counter]) {
                memcpy(payload->data, (char *)pl[payload->counter], length);
                debug_event(dbf->pay, 1, payload, zfcp_dbf_plen(length));
                payload->counter++;
@@ -200,6 +207,26 @@ void zfcp_dbf_hba_def_err(struct zfcp_adapter *adapter, u64 req_id, u16 scount,
        spin_unlock_irqrestore(&dbf->pay_lock, flags);
 }
 
+/**
+ * zfcp_dbf_hba_basic - trace event for basic adapter events
+ * @adapter: pointer to struct zfcp_adapter
+ */
+void zfcp_dbf_hba_basic(char *tag, struct zfcp_adapter *adapter)
+{
+       struct zfcp_dbf *dbf = adapter->dbf;
+       struct zfcp_dbf_hba *rec = &dbf->hba_buf;
+       unsigned long flags;
+
+       spin_lock_irqsave(&dbf->hba_lock, flags);
+       memset(rec, 0, sizeof(*rec));
+
+       memcpy(rec->tag, tag, ZFCP_DBF_TAG_LEN);
+       rec->id = ZFCP_DBF_HBA_BASIC;
+
+       debug_event(dbf->hba, 1, rec, sizeof(*rec));
+       spin_unlock_irqrestore(&dbf->hba_lock, flags);
+}
+
 static void zfcp_dbf_set_common(struct zfcp_dbf_rec *rec,
                                struct zfcp_adapter *adapter,
                                struct zfcp_port *port,
@@ -427,7 +454,7 @@ static debug_info_t *zfcp_dbf_reg(const char *name, int size, int rec_size)
                return NULL;
 
        debug_register_view(d, &debug_hex_ascii_view);
-       debug_set_level(d, 3);
+       debug_set_level(d, dbflevel);
 
        return d;
 }