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: d8652956cf37 ("net: dsa: realtek-smi: Add Realtek SMI driver")
Signed-off-by: Wen Yang <[email protected]>
Cc: Linus Walleij <[email protected]>
Cc: Andrew Lunn <[email protected]>
Cc: Vivien Didelot <[email protected]>
Cc: Florian Fainelli <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: [email protected]
Cc: [email protected]
---
drivers/net/dsa/rtl8366rb.c | 16 ++++++++++------
1 file changed, 10 insertions(+), 6 deletions(-)
diff --git a/drivers/net/dsa/rtl8366rb.c b/drivers/net/dsa/rtl8366rb.c
index a268085..f5cc8b0 100644
--- a/drivers/net/dsa/rtl8366rb.c
+++ b/drivers/net/dsa/rtl8366rb.c
@@ -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)
--
1.8.3.1
On Sun, Sep 29, 2019 at 9:01 AM Wen Yang <[email protected]> wrote:
It's nice to see some Alibaba kernel contributions!
> 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: d8652956cf37 ("net: dsa: realtek-smi: Add Realtek SMI driver")
> Signed-off-by: Wen Yang <[email protected]>
> Cc: Linus Walleij <[email protected]>
> Cc: Andrew Lunn <[email protected]>
> Cc: Vivien Didelot <[email protected]>
> Cc: Florian Fainelli <[email protected]>
> Cc: "David S. Miller" <[email protected]>
> Cc: [email protected]
> Cc: [email protected]
Reviewed-by: Linus Walleij <[email protected]>
Yours,
Linus Walleij
From: Wen Yang <[email protected]>
Date: Sun, 29 Sep 2019 15:00:47 +0800
> 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: d8652956cf37 ("net: dsa: realtek-smi: Add Realtek SMI driver")
> Signed-off-by: Wen Yang <[email protected]>
Please capitalize Fixes:, seriously I am very curious where did you
learned to specify the fixes tag non-capitalized?
Patch applied, t hanks.
On 2019/10/2 1:03 上午, David Miller wrote:
> From: Wen Yang <[email protected]>
> Date: Sun, 29 Sep 2019 15:00:47 +0800
>
>> 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: d8652956cf37 ("net: dsa: realtek-smi: Add Realtek SMI driver")
>> Signed-off-by: Wen Yang <[email protected]>
>
> Please capitalize Fixes:, seriously I am very curious where did you
> learned to specify the fixes tag non-capitalized?
>
> Patch applied, t hanks.
>
Thank you for your comments.
We checked the code repository and found that both ‘Fixes’ and ‘fixes’
are being used, such as:
commit a53651ec93a8d7ab5b26c5390e0c389048b4b4b6
…
net: ena: don't wake up tx queue when down
…
fixes: 1738cd3ed342 (net: ena: Add a driver for Amazon Elastic
Network Adapters (ENA))
…
And,
commit 1df379924304b687263942452836db1d725155df
…
clk: consoldiate the __clk_get_hw() declarations
…
Fixes: 59fcdce425b7 ("clk: Remove ifdef for COMMON_CLK in
clk-provider.h")
fixes: 73e0e496afda ("clkdev: Always allocate a struct clk and call
__clk_get() w/ CCF")
…
It is also found that the sha1 following ‘Fixes:’ requires at least 12
digits.
So we plan to modify the checkpatch.pl script to check for these issues.
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index a85d719..ddcd2d0 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2925,7 +2925,7 @@ sub process {
}
# check for invalid commit id
- if ($in_commit_log && $line =~
/(^fixes:|\bcommit)\s+([0-9a-f]{6,40})\b/i) {
+ if ($in_commit_log && $line =~ /(\bcommit)\s+([0-9a-f]{6,40})\b/i) {
my $id;
my $description;
($id, $description) = git_commit_info($2, undef, undef);
@@ -2935,6 +2935,25 @@ sub process {
}
}
+# check for fixes tag
+ if ($in_commit_log && $line =~ /(^fixes:)\s+([0-9a-f]{6,40})\b/i) {
+ my $id;
+ my $description;
+ ($id, $description) = git_commit_info($2, undef, undef);
+ if (!defined($id)) {
+ WARN("UNKNOWN_COMMIT_ID",
+ "Unknown commit id '$2', maybe rebased or not pulled?\n" .
$herecurr);
+ }
+ if ($1 ne "Fixes") {
+ WARN("FIXES_TAG_STYLE",
+ "The fixes tag should be capitalized (Fixes:).\n" . $hereprev);
+ }
+ if (length($2) < 12) {
+ WARN("FIXES_TAG_STYLE",
+ "SHA1 should be at least 12 digits long.\n" . $hereprev);
+ }
+ }
+
# ignore non-hunk lines and lines being removed
next if (!$hunk_line || $line =~ /^-/);
--
Best wishes,
Wen Yang