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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-11-04 08:41:09 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-11-04 08:41:09 +0300
commit16c8373ecf7b3c723a8e765d798ea413bc8345a6 (patch)
tree19684614078313ac940ce1ad744772dac71b91a6 /drivers/usb/storage
parentd19f1d44e74322ae2a75dc07b7d44fecacd5bcfb (diff)
parenta99d8080aaf358d5d23581244e5da23b35e340b9 (diff)
downloadlinux-16c8373ecf7b3c723a8e765d798ea413bc8345a6.tar.xz
Merge 5.4-rc6 into usb-next
We need the USB fixes in here to build on top of. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/storage')
-rw-r--r--drivers/usb/storage/scsiglue.c10
-rw-r--r--drivers/usb/storage/uas.c20
2 files changed, 0 insertions, 30 deletions
diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c
index 4c0c247e4101..66a4dcbbb1fc 100644
--- a/drivers/usb/storage/scsiglue.c
+++ b/drivers/usb/storage/scsiglue.c
@@ -68,7 +68,6 @@ static const char* host_info(struct Scsi_Host *host)
static int slave_alloc (struct scsi_device *sdev)
{
struct us_data *us = host_to_us(sdev->host);
- int maxp;
/*
* Set the INQUIRY transfer length to 36. We don't use any of
@@ -78,15 +77,6 @@ static int slave_alloc (struct scsi_device *sdev)
sdev->inquiry_len = 36;
/*
- * USB has unusual scatter-gather requirements: the length of each
- * scatterlist element except the last must be divisible by the
- * Bulk maxpacket value. Fortunately this value is always a
- * power of 2. Inform the block layer about this requirement.
- */
- maxp = usb_maxpacket(us->pusb_dev, us->recv_bulk_pipe, 0);
- blk_queue_virt_boundary(sdev->request_queue, maxp - 1);
-
- /*
* Some host controllers may have alignment requirements.
* We'll play it safe by requiring 512-byte alignment always.
*/
diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c
index bf80d6f81f58..34538253f12c 100644
--- a/drivers/usb/storage/uas.c
+++ b/drivers/usb/storage/uas.c
@@ -789,30 +789,10 @@ static int uas_slave_alloc(struct scsi_device *sdev)
{
struct uas_dev_info *devinfo =
(struct uas_dev_info *)sdev->host->hostdata;
- int maxp;
sdev->hostdata = devinfo;
/*
- * We have two requirements here. We must satisfy the requirements
- * of the physical HC and the demands of the protocol, as we
- * definitely want no additional memory allocation in this path
- * ruling out using bounce buffers.
- *
- * For a transmission on USB to continue we must never send
- * a package that is smaller than maxpacket. Hence the length of each
- * scatterlist element except the last must be divisible by the
- * Bulk maxpacket value.
- * If the HC does not ensure that through SG,
- * the upper layer must do that. We must assume nothing
- * about the capabilities off the HC, so we use the most
- * pessimistic requirement.
- */
-
- maxp = usb_maxpacket(devinfo->udev, devinfo->data_in_pipe, 0);
- blk_queue_virt_boundary(sdev->request_queue, maxp - 1);
-
- /*
* The protocol has no requirements on alignment in the strict sense.
* Controllers may or may not have alignment restrictions.
* As this is not exported, we use an extremely conservative guess.