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spi: cadence_qspi: Fix checking return value of fdt_first_subnode()

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fdt_first_subnode() returns -FDT_ERR_NOTFOUND if no subnode found.
0 is supposed to be a valid offset returns from fdt_first_subnode().

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
This commit is contained in:
Axel Lin 2015-01-07 09:54:56 +08:00 committed by Jagannadha Sutradharudu Teki
parent d87cbeccc5
commit 1dc7d00f27
1 changed files with 1 additions and 1 deletions
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2
drivers/spi/cadence_qspi.c
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@ -297,7 +297,7 @@ static int cadence_spi_ofdata_to_platdata(struct udevice *bus)
/* All other paramters are embedded in the child node */
subnode = fdt_first_subnode(blob, node);
if (!subnode) {
if (subnode < 0) {
printf("Error: subnode with SPI flash config missing!\n");
return -ENODEV;
}