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Diffstat (limited to 'include/scsi/scsi_cmnd.h')
-rw-r--r--include/scsi/scsi_cmnd.h12
1 files changed, 9 insertions, 3 deletions
diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h
index a5e885a111df..377df4a28512 100644
--- a/include/scsi/scsi_cmnd.h
+++ b/include/scsi/scsi_cmnd.h
@@ -10,6 +10,7 @@
struct Scsi_Host;
struct scsi_device;
+struct scsi_driver;
/*
* MAX_COMMAND_SIZE is:
@@ -131,6 +132,11 @@ struct scsi_cmnd {
unsigned char tag; /* SCSI-II queued command tag */
};
+static inline struct scsi_driver *scsi_cmd_to_driver(struct scsi_cmnd *cmd)
+{
+ return *(struct scsi_driver **)cmd->request->rq_disk->private_data;
+}
+
extern struct scsi_cmnd *scsi_get_command(struct scsi_device *, gfp_t);
extern struct scsi_cmnd *__scsi_get_command(struct Scsi_Host *, gfp_t);
extern void scsi_put_command(struct scsi_cmnd *);
@@ -289,17 +295,17 @@ static inline struct scsi_data_buffer *scsi_prot(struct scsi_cmnd *cmd)
static inline void set_msg_byte(struct scsi_cmnd *cmd, char status)
{
- cmd->result |= status << 8;
+ cmd->result = (cmd->result & 0xffff00ff) | (status << 8);
}
static inline void set_host_byte(struct scsi_cmnd *cmd, char status)
{
- cmd->result |= status << 16;
+ cmd->result = (cmd->result & 0xff00ffff) | (status << 16);
}
static inline void set_driver_byte(struct scsi_cmnd *cmd, char status)
{
- cmd->result |= status << 24;
+ cmd->result = (cmd->result & 0x00ffffff) | (status << 24);
}
#endif /* _SCSI_SCSI_CMND_H */