USB: g_file_storage: don't send padding when stall=n

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This patch (as1455) removes the extra padding sent by g_file_storage
and g_mass_storage when the gadget wants to send less data than
requested by the host and isn't allowed to halt the bulk-IN endpoint.

Although the Bulk-Only Transport specification requires the padding to
be present, it isn't truly needed since the transfer will be terminated
by a short packet anyway.  Furthermore, many existing devices don't
bother to send any padding.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-By: Michal Nazarewicz <mina86@mina86.com>
CC: Roger Quadros <roger.quadros@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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This commit is contained in:

Alan Stern 2011-03-25 11:46:27 -04:00 • committed by Greg Kroah-Hartman

parent edf847decc

commit ee81b3e086

2 changed files with 23 additions and 84 deletions

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54

drivers/usb/gadget/f_mass_storage.c

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53

drivers/usb/gadget/file_storage.c

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