scsi: scsi_transport_spi: make two const arrays static, shrinks object size
authorColin Ian King <colin.king@canonical.com>
Wed, 14 Feb 2018 22:35:43 +0000 (22:35 +0000)
committerMartin K. Petersen <martin.petersen@oracle.com>
Thu, 15 Feb 2018 23:20:14 +0000 (18:20 -0500)
Don't populate the const read-only arrays spi_test_unit_ready and
spi_test_unit_ready on the stack but instead make them static. Makes the
object code smaller by over 100 bytes:

Before:
   text    data     bss     dec     hex filename
  40171   12832     128   53131    cf8b drivers/scsi/scsi_transport_spi.o

After:
   text    data     bss     dec     hex filename
  39922   12976     128   53026    cf22 drivers/scsi/scsi_transport_spi.o

(gcc version 7.2.0 x86_64)

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
drivers/scsi/scsi_transport_spi.c

index 871ea582029ea7a6b0e1a5c5b1f6ed55a812e020..2ca150b16764983c8b0c4acb8fb877268ca76f73 100644 (file)
@@ -822,11 +822,11 @@ spi_dv_device_get_echo_buffer(struct scsi_device *sdev, u8 *buffer)
         * fails, the device won't let us write to the echo buffer
         * so just return failure */
        
-       const char spi_test_unit_ready[] = {
+       static const char spi_test_unit_ready[] = {
                TEST_UNIT_READY, 0, 0, 0, 0, 0
        };
 
-       const char spi_read_buffer_descriptor[] = {
+       static const char spi_read_buffer_descriptor[] = {
                READ_BUFFER, 0x0b, 0, 0, 0, 0, 0, 0, 4, 0
        };