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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>
This commit is contained in:
Gregory Herrero 2015-01-09 13:39:06 +01:00 committed by Felipe Balbi
parent 4556e12c9c
commit 7fcbc95c1f
1 changed files with 4 additions and 0 deletions
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4
drivers/usb/dwc2/gadget.c
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@ -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) |