diff options
| author |   Sergei Shtylyov <sshtylyov@ru.mvista.com> | 2010-09-11 13:23:12 -0500 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@suse.de> | 2010-09-24 11:05:01 -0700 |
| commit | a666e3e6098a9f56310e4ec2705f1dad124a34b5 (patch) | |
| tree | bea918dffc02612d0e41fae306711e2100a79034 /drivers/usb/musb/musb_gadget_ep0.c | |
| parent | usb: musb: host: Issue a memory barrier before starting DMA (diff) | |
| download | linux-dev-a666e3e6098a9f56310e4ec2705f1dad124a34b5.tar.xz linux-dev-a666e3e6098a9f56310e4ec2705f1dad124a34b5.zip | |
usb: musb: gadget: restart request on clearing endpoint halt
Commit 46034dca515bc4ddca0399ae58106d1f5f0d809f (USB: musb_gadget_ep0: stop
abusing musb_gadget_set_halt()) forgot to restart a queued request after
clearing the endpoint halt feature. This results in a couple of USB resets
while enumerating the file-backed storage gadget due to CSW packet not being
sent for the MODE SENSE(10) command.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: stable@kernel.org
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to '')
| -rw-r--r-- | drivers/usb/musb/musb_gadget_ep0.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/usb/musb/musb_gadget_ep0.c b/drivers/usb/musb/musb_gadget_ep0.c index 59bef8f3a358..6dd03f4c5f49 100644 --- a/drivers/usb/musb/musb_gadget_ep0.c +++ b/drivers/usb/musb/musb_gadget_ep0.c @@ -261,6 +261,7 @@ __acquires(musb->lock) ctrlrequest->wIndex & 0x0f; struct musb_ep *musb_ep; struct musb_hw_ep *ep; + struct musb_request *request; void __iomem *regs; int is_in; u16 csr; @@ -302,6 +303,14 @@ __acquires(musb->lock) musb_writew(regs, MUSB_RXCSR, csr); } + /* Maybe start the first request in the queue */ + request = to_musb_request( + next_request(musb_ep)); + if (!musb_ep->busy && request) { + DBG(3, "restarting the request\n"); + musb_ep_restart(musb, request); + } + /* select ep0 again */ musb_ep_select(mbase, 0); } break; |