staging: rtsx: remove rtsx_trace() and related code

The driver has rather excessive amount of tracing code, which would be
better done using ftrace. This is obviously not a main feature of the
driver, and it should work just as well without it.

Removing it saves over 1300 lines of code and likely makes the driver
a bit faster by avoiding lots of calls into the timekeeping code.

I came across this while cleaning up the last users of the deprecated
getnstimeofday64() function, of which there is one in the now-removed
get_current_time() function of the rtsx driver that was only used for
tracing.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 0 insertions, 25 deletions

diff --git a/drivers/staging/rts5208/rtsx.h b/drivers/staging/rts5208/rtsx.h
index 62e467c5a6d7..514536a6f92b 100644
--- a/drivers/staging/rts5208/rtsx.h
+++ b/drivers/staging/rts5208/rtsx.h
@@ -139,28 +139,6 @@ static inline struct rtsx_dev *host_to_rtsx(struct Scsi_Host *host)
 	return (struct rtsx_dev *)host->hostdata;
 }
 
-static inline void get_current_time(u8 *timeval_buf, int buf_len)
-{
-	struct timespec64 ts64;
-	u32 tv_usec;
-
-	if (!timeval_buf || (buf_len < 8))
-		return;
-
-	getnstimeofday64(&ts64);
-
-	tv_usec = ts64.tv_nsec / NSEC_PER_USEC;
-
-	timeval_buf[0] = (u8)(ts64.tv_sec >> 24);
-	timeval_buf[1] = (u8)(ts64.tv_sec >> 16);
-	timeval_buf[2] = (u8)(ts64.tv_sec >> 8);
-	timeval_buf[3] = (u8)(ts64.tv_sec);
-	timeval_buf[4] = (u8)(tv_usec >> 24);
-	timeval_buf[5] = (u8)(tv_usec >> 16);
-	timeval_buf[6] = (u8)(tv_usec >> 8);
-	timeval_buf[7] = (u8)(tv_usec);
-}
-
 /*
  * The scsi_lock() and scsi_unlock() macros protect the sm_state and the
  * single queue element srb for write access
@@ -174,9 +152,6 @@ static inline void get_current_time(u8 *timeval_buf, int buf_len)
 /* struct scsi_cmnd transfer buffer access utilities */
 enum xfer_buf_dir	{TO_XFER_BUF, FROM_XFER_BUF};
 
-#define _MSG_TRACE
-
-#include "trace.h"
 #include "rtsx_chip.h"
 #include "rtsx_transport.h"
 #include "rtsx_scsi.h"