Re: [PATCH 04/23] scsi: initialize scsi midlayer limits before allocating the queue

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 





diff --git a/drivers/ata/pata_macio.c b/drivers/ata/pata_macio.c
index 817838e2f70e..3cb455a32d92 100644
--- a/drivers/ata/pata_macio.c
+++ b/drivers/ata/pata_macio.c
@@ -915,10 +915,13 @@ static const struct scsi_host_template pata_macio_sht = {
  	.sg_tablesize		= MAX_DCMDS,
  	/* We may not need that strict one */
  	.dma_boundary		= ATA_DMA_BOUNDARY,
-	/* Not sure what the real max is but we know it's less than 64K, let's
-	 * use 64K minus 256
+	/*
+	 * The SCSI core requires the segment size to cover at least a page, so
+	 * for 64K page size kernels this must be at least 64K. However the
+	 * hardware can't handle 64K, so pata_macio_qc_prep() will split large
+	 * requests.
  	 */
-	.max_segment_size	= MAX_DBDMA_SEG,
+	.max_segment_size	= SZ_64K,
  	.device_configure	= pata_macio_device_configure,
  	.sdev_groups		= ata_common_sdev_groups,
  	.can_queue		= ATA_DEF_QUEUE,


Feel free to add:
Reviewed-by: John Garry <john.g.garry@xxxxxxxxxx>




[Index of Archives]     [Linux RAID]     [Linux SCSI]     [Linux ATA RAID]     [IDE]     [Linux Wireless]     [Linux Kernel]     [ATH6KL]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Device Mapper]

  Powered by Linux