scsi: sd: Make sd_spinup_disk() less noisy

sd_spinup_disk() is a little bit noisy after commit 848ade90ba9c ("scsi:
sd: Do not exit sd_spinup_disk() quietly"):

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

There's not really a benefit in printing the same message multiple
times. Therefore print it only if media_present was previously set.

Link: https://lore.kernel.org/r/a2d0a249-6035-9697-626a-e14ec50ef6ee@gmail.com
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index a8039be..523bf2f 100644 (file)
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -2124,6 +2124,8 @@ sd_spinup_disk(struct scsi_disk *sdkp)
                retries = 0;
 
                do {
+                       bool 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;
                        }