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EFM32 OTG host: Adam porters fix for STM32 FS/HS probably should be applied to EFM32 host which which has very similar IP.

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This commit is contained in:
Gregory Nutt 2019-09-08 06:58:34 -06:00
parent 726ea3c8a9
commit 4b1eecad66
1 changed files with 4 additions and 1 deletions
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5
arch/arm/src/efm32/efm32_usbhost.c
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@ -2177,6 +2177,7 @@ static ssize_t efm32_out_transfer(FAR struct efm32_usbhost_s *priv, int chidx,
size_t xfrlen; size_t xfrlen;
ssize_t xfrd; ssize_t xfrd;
int ret; int ret;
bool zlp;
/* Loop until the transfer completes (i.e., buflen is decremented to zero) /* Loop until the transfer completes (i.e., buflen is decremented to zero)
* or a fatal error occurs (any error other than a simple NAK) * or a fatal error occurs (any error other than a simple NAK)
@ -2185,8 +2186,9 @@ static ssize_t efm32_out_transfer(FAR struct efm32_usbhost_s *priv, int chidx,
chan = &priv->chan[chidx]; chan = &priv->chan[chidx];
start = clock_systimer(); start = clock_systimer();
xfrd = 0; xfrd = 0;
zlp = (buflen == 0);
while (buflen > 0) while (buflen > 0 || zlp)
{ {
/* Transfer one packet at a time. The hardware is capable of queueing /* Transfer one packet at a time. The hardware is capable of queueing
* multiple OUT packets, but I just haven't figured out how to handle * multiple OUT packets, but I just haven't figured out how to handle
@ -2263,6 +2265,7 @@ static ssize_t efm32_out_transfer(FAR struct efm32_usbhost_s *priv, int chidx,
buffer += xfrlen; buffer += xfrlen;
buflen -= xfrlen; buflen -= xfrlen;
xfrd += chan->xfrd; xfrd += chan->xfrd;
zlp = false;
} }
} }