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usb: dwc2: handle return code of dev_read_size() in of to, plat function

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dev_read_size() returns -EINVAL (-22) if the property "g-tx-fifo-size"
does not exist. If that's the case, we now keep the default value of 0.

Signed-off-by: Wolfgang Grandegger <wg@aries-embedded.de>
This commit is contained in:
Wolfgang Grandegger 2022-03-14 09:32:53 +01:00 • committed by Marek Vasut
parent c96137000e
commit 2addee35f2
1 changed files with 3 additions and 2 deletions
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5
drivers/usb/gadget/dwc2_udc_otg.c
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@ -996,8 +996,9 @@ static int dwc2_udc_otg_of_to_plat(struct udevice *dev)
plat->rx_fifo_sz = dev_read_u32_default(dev, "g-rx-fifo-size", 0);
plat->np_tx_fifo_sz = dev_read_u32_default(dev, "g-np-tx-fifo-size", 0);
plat->tx_fifo_sz_nb =
dev_read_size(dev, "g-tx-fifo-size") / sizeof(u32);
ret = dev_read_size(dev, "g-tx-fifo-size");
if (ret > 0)
plat->tx_fifo_sz_nb = ret / sizeof(u32);
if (plat->tx_fifo_sz_nb > DWC2_MAX_HW_ENDPOINTS)
plat->tx_fifo_sz_nb = DWC2_MAX_HW_ENDPOINTS;
if (plat->tx_fifo_sz_nb) {