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soc: brcmstb: biuctrl: exit without warning on non brcmstb platforms

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Currently if this driver is included, we get the following warning
on any platforms irrespective of whether it's brcmstb platform or not.
"
 brcmstb: biuctrl: missing BIU control node
 brcmstb: biuctrl: MCP: Unable to disable write pairing!
"

This patch allows to exit early without any warning messages on non
brcmstb platforms as it's meaningless for them.

Cc: Brian Norris <computersforpeace@gmail.com>
Cc: Gregory Fong <gregory.0xf0@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: bcm-kernel-feedback-list@broadcom.com
Fixes: f780429adf ("soc: brcmstb: biuctrl: Move to early_initcall")
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
[florian: Add fixes tag, make initcall non fatal]
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Sudeep Holla 2018-01-12 13:08:14 -08:00 committed by Arnd Bergmann
parent c90801664e
commit a78182980a
1 changed files with 11 additions and 9 deletions
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20
drivers/soc/bcm/brcmstb/biuctrl.c
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@ -162,17 +162,11 @@ static void __init mcp_b53_set(void)
cbc_writel(reg, CPU_WRITEBACK_CTRL_REG);
}
static int __init setup_hifcpubiuctrl_regs(void)
static int __init setup_hifcpubiuctrl_regs(struct device_node *np)
{
struct device_node *np, *cpu_dn;
struct device_node *cpu_dn;
int ret = 0;
np = of_find_compatible_node(NULL, NULL, "brcm,brcmstb-cpu-biu-ctrl");
if (!np) {
pr_err("missing BIU control node\n");
return -ENODEV;
}
cpubiuctrl_base = of_iomap(np, 0);
if (!cpubiuctrl_base) {
pr_err("failed to remap BIU control base\n");
@ -242,9 +236,17 @@ static struct syscore_ops brcmstb_cpu_credit_syscore_ops = {
static int __init brcmstb_biuctrl_init(void)
{
struct device_node *np;
int ret;
setup_hifcpubiuctrl_regs();
/* We might be running on a multi-platform kernel, don't make this a
* fatal error, just bail out early
*/
np = of_find_compatible_node(NULL, NULL, "brcm,brcmstb-cpu-biu-ctrl");
if (!np)
return 0;
setup_hifcpubiuctrl_regs(np);
ret = mcp_write_pairing_set();
if (ret) {