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authorFelipe Balbi <balbi@ti.com>2011-12-19 13:45:01 +0200
committerFelipe Balbi <balbi@ti.com>2011-12-19 13:45:01 +0200
commit7422ba5343b8c1dbe1a517d0fcc15e7d671ca960 (patch)
treefb08da5707bb6498a42eef28e10200fd79356e68 /drivers/usb
parent248b122b131202de95aaa3670e48465619bdff14 (diff)
downloadvexpress-lsk-7422ba5343b8c1dbe1a517d0fcc15e7d671ca960.tar.gz
usb: gadget: epautoconf: do not change number of streams
We should not change gadget driver's descriptors just because we think it's right to do so. There are several of reasons which would support this statement but it suffices to say that this was probably never tested because it updates bmAttributes without asking the driver if it's ok to do so. This means that e.g. on UASP gadget it would enable stream support even for the command endpoint which must not have stream support enabled. In fact, this change is fixing the bug introduced by commit a59d6b9 (usb: gadget: add streams support to the gadget framework) which was caught when testing UASP gadget with dwc3 driver. Cc: Tatyana Brokhman <tlinder@codeaurora.org> Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/gadget/epautoconf.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/drivers/usb/gadget/epautoconf.c b/drivers/usb/gadget/epautoconf.c
index 596a0b464e6..4dff83d2f26 100644
--- a/drivers/usb/gadget/epautoconf.c
+++ b/drivers/usb/gadget/epautoconf.c
@@ -130,9 +130,6 @@ ep_matches (
num_req_streams = ep_comp->bmAttributes & 0x1f;
if (num_req_streams > ep->max_streams)
return 0;
- /* Update the ep_comp descriptor if needed */
- if (num_req_streams != ep->max_streams)
- ep_comp->bmAttributes = ep->max_streams;
}
}