scsi: use per-cpu buffer for formatting scsi_print_result()
Convert scsi_print_result() to use the per-cpu buffer for decoding the
command result and disposition.
Tested-by: Robert Elliott <elliott@hp.com>
Reviewed-by: Robert Elliott <elliott@hp.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
diff --git a/drivers/scsi/scsi_logging.c b/drivers/scsi/scsi_logging.c
index c7cba31..6128303 100644
--- a/drivers/scsi/scsi_logging.c
+++ b/drivers/scsi/scsi_logging.c
@@ -428,3 +428,62 @@
cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE);
}
EXPORT_SYMBOL(scsi_print_sense);
+
+void scsi_print_result(const struct scsi_cmnd *cmd, const char *msg,
+ int disposition)
+{
+ char *logbuf;
+ size_t off, logbuf_len;
+ const char *mlret_string = scsi_mlreturn_string(disposition);
+ const char *hb_string = scsi_hostbyte_string(cmd->result);
+ const char *db_string = scsi_driverbyte_string(cmd->result);
+
+ logbuf = scsi_log_reserve_buffer(&logbuf_len);
+ if (!logbuf)
+ return;
+
+ off = sdev_format_header(logbuf, logbuf_len,
+ scmd_name(cmd), cmd->request->tag);
+
+ if (off >= logbuf_len)
+ goto out_printk;
+
+ if (msg) {
+ off += scnprintf(logbuf + off, logbuf_len - off,
+ "%s: ", msg);
+ if (WARN_ON(off >= logbuf_len))
+ goto out_printk;
+ }
+ if (mlret_string)
+ off += scnprintf(logbuf + off, logbuf_len - off,
+ "%s ", mlret_string);
+ else
+ off += scnprintf(logbuf + off, logbuf_len - off,
+ "UNKNOWN(0x%02x) ", disposition);
+ if (WARN_ON(off >= logbuf_len))
+ goto out_printk;
+
+ off += scnprintf(logbuf + off, logbuf_len - off, "Result: ");
+ if (WARN_ON(off >= logbuf_len))
+ goto out_printk;
+
+ if (hb_string)
+ off += scnprintf(logbuf + off, logbuf_len - off,
+ "hostbyte=%s ", hb_string);
+ else
+ off += scnprintf(logbuf + off, logbuf_len - off,
+ "hostbyte=0x%02x ", host_byte(cmd->result));
+ if (WARN_ON(off >= logbuf_len))
+ goto out_printk;
+
+ if (db_string)
+ off += scnprintf(logbuf + off, logbuf_len - off,
+ "driverbyte=%s", db_string);
+ else
+ off += scnprintf(logbuf + off, logbuf_len - off,
+ "driverbyte=0x%02x", driver_byte(cmd->result));
+out_printk:
+ dev_printk(KERN_INFO, &cmd->device->sdev_gendev, logbuf);
+ scsi_log_release_buffer(logbuf);
+}
+EXPORT_SYMBOL(scsi_print_result);