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net: dsa: rtl8366rb: add missing of_node_put after calling of_get_child_by_name 

of_node_put needs to be called when the device node which is got
from of_get_child_by_name finished using.
irq_domain_add_linear() also calls of_node_get() to increase refcount,
so irq_domain will not be affected when it is released.

Fixes: d8652956cf ("net: dsa: realtek-smi: Add Realtek SMI driver")
Signed-off-by: Wen Yang <wenyang@linux.alibaba.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Vivien Didelot <vivien.didelot@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Wen Yang 2019-09-29 15:00:47 +08:00 committed by David S. Miller
parent d2c50b1cd9
commit f32eb9d804
1 changed files with 10 additions and 6 deletions
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16
drivers/net/dsa/rtl8366rb.c
View File

@ -507,7 +507,8 @@ static int rtl8366rb_setup_cascaded_irq(struct realtek_smi *smi)
irq = of_irq_get(intc, 0);
if (irq <= 0) {
dev_err(smi->dev, "failed to get parent IRQ\n");
return irq ? irq : -EINVAL;
ret = irq ? irq : -EINVAL;
goto out_put_node;
}
/* This clears the IRQ status register */
@ -515,7 +516,7 @@ static int rtl8366rb_setup_cascaded_irq(struct realtek_smi *smi)
&val);
if (ret) {
dev_err(smi->dev, "can't read interrupt status\n");
return ret;
goto out_put_node;
}
/* Fetch IRQ edge information from the descriptor */
@ -537,7 +538,7 @@ static int rtl8366rb_setup_cascaded_irq(struct realtek_smi *smi)
val);
if (ret) {
dev_err(smi->dev, "could not configure IRQ polarity\n");
return ret;
goto out_put_node;
}
ret = devm_request_threaded_irq(smi->dev, irq, NULL,
@ -545,7 +546,7 @@ static int rtl8366rb_setup_cascaded_irq(struct realtek_smi *smi)
"RTL8366RB", smi);
if (ret) {
dev_err(smi->dev, "unable to request irq: %d\n", ret);
return ret;
goto out_put_node;
}
smi->irqdomain = irq_domain_add_linear(intc,
RTL8366RB_NUM_INTERRUPT,
@ -553,12 +554,15 @@ static int rtl8366rb_setup_cascaded_irq(struct realtek_smi *smi)
smi);
if (!smi->irqdomain) {
dev_err(smi->dev, "failed to create IRQ domain\n");
return -EINVAL;
ret = -EINVAL;
goto out_put_node;
}
for (i = 0; i < smi->num_ports; i++)
irq_set_parent(irq_create_mapping(smi->irqdomain, i), irq);
return 0;
out_put_node:
of_node_put(intc);
return ret;
}
static int rtl8366rb_set_addr(struct realtek_smi *smi)