sd_spinup_disk() now is a little noisy

[Heiner Kallweit <hkallweit1@gmail.com>]

For my personal taste sd_spinup_disk() is a little bit noisy now.

[    1.942179] scsi 0:0:0:0: Direct-Access     Multiple Card  Reader     1.00 PQ: 0 ANSI: 0
[    1.943651] sd 0:0:0:0: Attached scsi generic sg0 type 0
[    1.943667] sd 0:0:0:0: [sda] Media removed, stopped polling
[    1.949970] sd 0:0:0:0: [sda] Media removed, stopped polling
[    1.950001] sd 0:0:0:0: [sda] Attached SCSI removable disk
[    1.959266] sd 0:0:0:0: [sda] Media removed, stopped polling

There's not really a benefit in printing the same message multiple
times. The following helped for me, not sure however whether
that's the right way to deal with it.

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index cbd9999f9..af7e7b0da 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -2124,6 +2124,8 @@ sd_spinup_disk(struct scsi_disk *sdkp)
 		retries = 0;
 
 		do {
+			u8 media_was_present = sdkp->media_present;
+
 			cmd[0] = TEST_UNIT_READY;
 			memset((void *) &cmd[1], 0, 9);
 
@@ -2138,7 +2140,8 @@ sd_spinup_disk(struct scsi_disk *sdkp)
 			 * with any more polling.
 			 */
 			if (media_not_present(sdkp, &sshdr)) {
-				sd_printk(KERN_NOTICE, sdkp, "Media removed, stopped polling\n");
+				if (media_was_present)
+					sd_printk(KERN_NOTICE, sdkp, "Media removed, stopped polling\n");
 				return;
 			}
 
-- 
2.33.0