Re: [PATCH 4.14 67/95] UAS: Revert commit 3ae62a42090f ("UAS: fix alignment of scatter/gather segments")

Am Montag, den 04.11.2019, 22:45 +0100 schrieb Greg Kroah-Hartman:

There is no longer any reason to keep the virt_boundary_mask setting in the uas driver. It was needed in the first place only for handling devices with a block size smaller than the maxpacket size and where the host controller was not capable of fully general scatter-gather operation (that is, able to merge two SG segments into a single USB packet). But:

    High-speed or slower connections never use a bulk maxpacket
    value larger than 512;

    The SCSI layer does not handle block devices with a block size
    smaller than 512 bytes;

    All the host controllers capable of SuperSpeed operation can
    handle fully general SG;

    Since commit ea44d190764b ("usbip: Implement SG support to
    vhci-hcd and stub driver") was merged, the USB/IP driver can
    also handle SG.

Hi,

same story as in 4.4.x, I am afraid.

Regards Oliver