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authorWolfgang Grandegger <wg@aries-embedded.de>2022-03-14 09:32:53 +0100
committerMarek Vasut <marex@denx.de>2022-03-14 12:31:12 +0100
commit2addee35f2da178bf858403f2e2cb20a59df734f (patch)
treeac0d157e9d272c998513384ac8ab43b233f738e1 /drivers/usb
parentc96137000e4cf486dcb164fd67a1a0b5b2fb99c6 (diff)
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usb: dwc2: handle return code of dev_read_size() in of to, plat function
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>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/gadget/dwc2_udc_otg.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/usb/gadget/dwc2_udc_otg.c b/drivers/usb/gadget/dwc2_udc_otg.c
index 2748270ad6..77988f78ab 100644
--- a/drivers/usb/gadget/dwc2_udc_otg.c
+++ b/drivers/usb/gadget/dwc2_udc_otg.c
@@ -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) {