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usb: s3c-hsotg: Avoid TxFIFO corruption in DMA mode

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Writing to TxFIFO relates only to Slave mode and leads to
TxFIFO corruption in DMA mode.

Signed-off-by: Anton Tikhomirov <av.tikhomirov@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Anton Tikhomirov 2012-03-06 14:08:29 +09:00 committed by Felipe Balbi
parent 659ad60cb9
commit 70fa030ffb
1 changed files with 2 additions and 1 deletions
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3
drivers/usb/gadget/s3c-hsotg.c
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@ -1921,7 +1921,8 @@ static void s3c_hsotg_epint(struct s3c_hsotg *hsotg, unsigned int idx,
ints & S3C_DIEPMSK_TxFIFOEmpty) {
dev_dbg(hsotg->dev, "%s: ep%d: TxFIFOEmpty\n",
__func__, idx);
s3c_hsotg_trytx(hsotg, hs_ep);
if (!using_dma(hsotg))
s3c_hsotg_trytx(hsotg, hs_ep);
}
}
}