diff options
| -rw-r--r-- | drivers/scsi/sd.c | 61 | ||||
| -rw-r--r-- | drivers/scsi/sd.h | 1 |
2 files changed, 38 insertions, 24 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 8eebaa8c6f52..aeab5d9dff27 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -1440,6 +1440,7 @@ sd_read_capacity(struct scsi_disk *sdkp, unsigned char *buffer) { int sector_size; struct scsi_device *sdp = sdkp->device; + sector_t old_capacity = sdkp->capacity; if (sd_try_rc16_first(sdp)) { sector_size = read_capacity_16(sdkp, sdp, buffer); @@ -1531,10 +1532,11 @@ got_data: string_get_size(sz, STRING_UNITS_10, cap_str_10, sizeof(cap_str_10)); - sd_printk(KERN_NOTICE, sdkp, - "%llu %d-byte hardware sectors: (%s/%s)\n", - (unsigned long long)sdkp->capacity, - sector_size, cap_str_10, cap_str_2); + if (sdkp->first_scan || old_capacity != sdkp->capacity) + sd_printk(KERN_NOTICE, sdkp, + "%llu %d-byte hardware sectors: (%s/%s)\n", + (unsigned long long)sdkp->capacity, + sector_size, cap_str_10, cap_str_2); } /* Rescale capacity to 512-byte units */ @@ -1571,6 +1573,7 @@ sd_read_write_protect_flag(struct scsi_disk *sdkp, unsigned char *buffer) int res; struct scsi_device *sdp = sdkp->device; struct scsi_mode_data data; + int old_wp = sdkp->write_prot; set_disk_ro(sdkp->disk, 0); if (sdp->skip_ms_page_3f) { @@ -1611,11 +1614,13 @@ sd_read_write_protect_flag(struct scsi_disk *sdkp, unsigned char *buffer) } else { sdkp->write_prot = ((data.device_specific & 0x80) != 0); set_disk_ro(sdkp->disk, sdkp->write_prot); - sd_printk(KERN_NOTICE, sdkp, "Write Protect is %s\n", - sdkp->write_prot ? "on" : "off"); - sd_printk(KERN_DEBUG, sdkp, - "Mode Sense: %02x %02x %02x %02x\n", - buffer[0], buffer[1], buffer[2], buffer[3]); + if (sdkp->first_scan || old_wp != sdkp->write_prot) { + sd_printk(KERN_NOTICE, sdkp, "Write Protect is %s\n", + sdkp->write_prot ? "on" : "off"); + sd_printk(KERN_DEBUG, sdkp, + "Mode Sense: %02x %02x %02x %02x\n", + buffer[0], buffer[1], buffer[2], buffer[3]); + } } } @@ -1633,6 +1638,9 @@ sd_read_cache_type(struct scsi_disk *sdkp, unsigned char *buffer) int modepage; struct scsi_mode_data data; struct scsi_sense_hdr sshdr; + int old_wce = sdkp->WCE; + int old_rcd = sdkp->RCD; + int old_dpofua = sdkp->DPOFUA; if (sdp->skip_ms_page_8) goto defaults; @@ -1704,12 +1712,14 @@ sd_read_cache_type(struct scsi_disk *sdkp, unsigned char *buffer) sdkp->DPOFUA = 0; } - sd_printk(KERN_NOTICE, sdkp, - "Write cache: %s, read cache: %s, %s\n", - sdkp->WCE ? "enabled" : "disabled", - sdkp->RCD ? "disabled" : "enabled", - sdkp->DPOFUA ? "supports DPO and FUA" - : "doesn't support DPO or FUA"); + if (sdkp->first_scan || old_wce != sdkp->WCE || + old_rcd != sdkp->RCD || old_dpofua != sdkp->DPOFUA) + sd_printk(KERN_NOTICE, sdkp, + "Write cache: %s, read cache: %s, %s\n", + sdkp->WCE ? "enabled" : "disabled", + sdkp->RCD ? "disabled" : "enabled", + sdkp->DPOFUA ? "supports DPO and FUA" + : "doesn't support DPO or FUA"); return; } @@ -1805,15 +1815,6 @@ static int sd_revalidate_disk(struct gendisk *disk) goto out; } - /* defaults, until the device tells us otherwise */ - sdp->sector_size = 512; - sdkp->capacity = 0; - sdkp->media_present = 1; - sdkp->write_prot = 0; - sdkp->WCE = 0; - sdkp->RCD = 0; - sdkp->ATO = 0; - sd_spinup_disk(sdkp); /* @@ -1827,6 +1828,8 @@ static int sd_revalidate_disk(struct gendisk *disk) sd_read_app_tag_own(sdkp, buffer); } + sdkp->first_scan = 0; + /* * We now have all cache related info, determine how we deal * with ordered requests. Note that as the current SCSI @@ -1937,6 +1940,16 @@ static void sd_probe_async(void *data, async_cookie_t cookie) gd->private_data = &sdkp->driver; gd->queue = sdkp->device->request_queue; + /* defaults, until the device tells us otherwise */ + sdp->sector_size = 512; + sdkp->capacity = 0; + sdkp->media_present = 1; + sdkp->write_prot = 0; + sdkp->WCE = 0; + sdkp->RCD = 0; + sdkp->ATO = 0; + sdkp->first_scan = 1; + sd_revalidate_disk(gd); blk_queue_prep_rq(sdp->request_queue, sd_prep_fn); diff --git a/drivers/scsi/sd.h b/drivers/scsi/sd.h index 75638e7d3f66..708778cf5f06 100644 --- a/drivers/scsi/sd.h +++ b/drivers/scsi/sd.h @@ -53,6 +53,7 @@ struct scsi_disk { unsigned WCE : 1; /* state of disk WCE bit */ unsigned RCD : 1; /* state of disk RCD bit, unused */ unsigned DPOFUA : 1; /* state of disk DPOFUA bit */ + unsigned first_scan : 1; }; #define to_scsi_disk(obj) container_of(obj,struct scsi_disk,dev) |