diff options
| author | Gregory Herrero <gregory.herrero@intel.com> | 2015-01-09 13:39:06 +0100 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2015-01-12 15:34:41 -0600 |
| commit | 7fcbc95c1fa4d6e3f4645f9552d358f07ab93ad1 (patch) | |
| tree | 609e6a22434d53aaeb54afe4741a9ca9f0efa929 /drivers/usb/dwc2/gadget.c | |
| parent | 4556e12c9cf732343224308866dad2a12887dcd6 (diff) | |
usb: dwc2: gadget: reset fifo_map when initializing fifos
After all endpoints are disabled, fifo_map should have reached 0.
Its a bug if if didn't, so warn about it and reset it to 0 so that
driver can continue using all the fifos.
Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/dwc2/gadget.c')
| -rw-r--r-- | drivers/usb/dwc2/gadget.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index de5da92a8537..a1fd86febe98 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -177,6 +177,10 @@ static void s3c_hsotg_init_fifo(struct dwc2_hsotg *hsotg) int timeout; u32 val; + /* Reset fifo map if not correctly cleared during previous session */ + WARN_ON(hsotg->fifo_map); + hsotg->fifo_map = 0; + /* set RX/NPTX FIFO sizes */ writel(hsotg->g_rx_fifo_sz, hsotg->regs + GRXFSIZ); writel((hsotg->g_rx_fifo_sz << FIFOSIZE_STARTADDR_SHIFT) | |