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| author | Robert Baldyga <r.baldyga@samsung.com> | 2013-12-06 13:03:45 +0100 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2013-12-12 13:43:35 -0600 |
| commit | b963a81a4803fb387d6551ea0fb66876e0c8ff12 (patch) | |
| tree | e01f177d140b9555d1b9bdf75f713414679404b3 /drivers/usb/gadget/s3c-hsotg.c | |
| parent | 295538ff7e5389d5aee5845c548f114b793d60c9 (diff) | |
| download | blackbird-op-linux-b963a81a4803fb387d6551ea0fb66876e0c8ff12.tar.gz blackbird-op-linux-b963a81a4803fb387d6551ea0fb66876e0c8ff12.zip | |
usb: gadget: s3c-hsotg: add flush TX FIFO when kill all requests
This patch adds flushing TX FIFO in kill_all_requests() function in
dedicated-fifo mode. It's because when requests are killed (when endpoint is
disabled or in case of device reset/disconnection) in FIFO can stay some
unsent data. In the worst case FIFO can stay full, and then if endpoint will
be back enabled, sending new data will be impossible.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/gadget/s3c-hsotg.c')
| -rw-r--r-- | drivers/usb/gadget/s3c-hsotg.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c index 2fa7a9c593e3..6c80bfcefa87 100644 --- a/drivers/usb/gadget/s3c-hsotg.c +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -2150,6 +2150,9 @@ static void kill_all_requests(struct s3c_hsotg *hsotg, s3c_hsotg_complete_request(hsotg, ep, req, result); } + if(hsotg->dedicated_fifos) + if ((readl(hsotg->regs + DTXFSTS(ep->index)) & 0xffff) * 4 < 3072) + s3c_hsotg_txfifo_flush(hsotg, ep->index); } #define call_gadget(_hs, _entry) \ |
