Switch scsi_add_lun to use the atomic queue limits API to update the max_hw_sectors for devices with quirks. Signed-off-by: Christoph Hellwig <hch@xxxxxx> Reviewed-by: Bart Van Assche <bvanassche@xxxxxxx> Reviewed-by: John Garry <john.g.garry@xxxxxxxxxx> Reviewed-by: Damien Le Moal <dlemoal@xxxxxxxxxx> Reviewed-by: Hannes Reinecke <hare@xxxxxxx> --- drivers/scsi/scsi_scan.c | 28 +++++++++++++++------------- 1 file changed, 15 insertions(+), 13 deletions(-) diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index 205ab3b3ea89be..1ec4b309af726d 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -874,6 +874,7 @@ static int scsi_probe_lun(struct scsi_device *sdev, unsigned char *inq_result, static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result, blist_flags_t *bflags, int async) { + struct queue_limits lim; int ret; /* @@ -1004,19 +1005,6 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result, if (*bflags & BLIST_SELECT_NO_ATN) sdev->select_no_atn = 1; - /* - * Maximum 512 sector transfer length - * broken RA4x00 Compaq Disk Array - */ - if (*bflags & BLIST_MAX_512) - blk_queue_max_hw_sectors(sdev->request_queue, 512); - /* - * Max 1024 sector transfer length for targets that report incorrect - * max/optimal lengths and relied on the old block layer safe default - */ - else if (*bflags & BLIST_MAX_1024) - blk_queue_max_hw_sectors(sdev->request_queue, 1024); - /* * Some devices may not want to have a start command automatically * issued when a device is added. @@ -1077,6 +1065,20 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result, transport_configure_device(&sdev->sdev_gendev); + /* + * No need to freeze the queue as it isn't reachable to anyone else yet. + */ + lim = queue_limits_start_update(sdev->request_queue); + if (*bflags & BLIST_MAX_512) + lim.max_hw_sectors = 512; + else if (*bflags & BLIST_MAX_1024) + lim.max_hw_sectors = 1024; + ret = queue_limits_commit_update(sdev->request_queue, &lim); + if (ret) { + sdev_printk(KERN_ERR, sdev, "failed to apply queue limits.\n"); + return SCSI_SCAN_NO_RESPONSE; + } + if (sdev->host->hostt->slave_configure) { ret = sdev->host->hostt->slave_configure(sdev); if (ret) { -- 2.39.2