From: Sean Anderson <seanga2@gmail.com>
Date: Fri, 16 Oct 2020 22:57:46 +0000 (-0400)
Subject: spi: dw: Use generic function to read reg address
X-Git-Url: http://git.dujemihanovic.xyz/login.html?a=commitdiff_plain;h=c785f43ffdf402ecd109bbce972c25e32bc4c85b;p=u-boot.git

spi: dw: Use generic function to read reg address

Using an fdt-specific function causes problems when compiled with a live
tree.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Tested-by Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
---

diff --git a/drivers/spi/designware_spi.c b/drivers/spi/designware_spi.c
index 32de33f695..e8ba80ef41 100644
--- a/drivers/spi/designware_spi.c
+++ b/drivers/spi/designware_spi.c
@@ -160,6 +160,8 @@ static int dw_spi_ofdata_to_platdata(struct udevice *bus)
 	struct dw_spi_platdata *plat = bus->platdata;
 
 	plat->regs = dev_read_addr_ptr(bus);
+	if (!plat->regs)
+		return -EINVAL;
 
 	/* Use 500KHz as a suitable default */
 	plat->frequency = dev_read_u32_default(bus, "spi-max-frequency",