sysmo-bts
/
barebox
9
0
Fork 0
Code Releases Activity

usb: ehci-atmel: Check result of clk_enable() 

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Andrey Smirnov 2017-03-08 14:09:03 -08:00 committed by Sascha Hauer
parent bf09557360
commit b52eb5a9a2
1 changed files with 17 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/usb/host/ehci-atmel.c
View File

@ -32,10 +32,20 @@
/* interface and function clocks; sometimes also an AHB clock */
static struct clk *iclk, *fclk;
static void atmel_start_clock(void)
static int atmel_start_clock(void)
{
clk_enable(iclk);
clk_enable(fclk);
int ret;
ret = clk_enable(iclk);
if (ret < 0) {
pr_err("Error enabling interface clock\n");
return ret;
}
ret = clk_enable(fclk);
if (ret < 0)
pr_err("Error enabling function clock\n");
return ret;
}
static void atmel_stop_clock(void)
@ -46,6 +56,7 @@ static void atmel_stop_clock(void)
static int atmel_ehci_probe(struct device_d *dev)
{
int ret;
struct resource *iores;
struct ehci_data data;
@ -64,7 +75,9 @@ static int atmel_ehci_probe(struct device_d *dev)
/*
* Start the USB clocks.
*/
atmel_start_clock();
ret = atmel_start_clock();
if (ret < 0)
return ret;
data.flags = 0;