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Groups > linux.kernel > #1255199 > unrolled thread
| Started by | Julia Lawall <Julia.Lawall@lip6.fr> |
|---|---|
| First post | 2015-10-24 17:00 +0200 |
| Last post | 2015-10-26 09:50 +0100 |
| Articles | 7 — 2 participants |
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[PATCH 0/9] add missing of_node_put Julia Lawall <Julia.Lawall@lip6.fr> - 2015-10-24 17:00 +0200
[PATCH 4/9] leds: 88pm860x: add missing of_node_put Julia Lawall <Julia.Lawall@lip6.fr> - 2015-10-24 17:00 +0200
[PATCH 2/9] leds: bcm6358: add missing of_node_put Julia Lawall <Julia.Lawall@lip6.fr> - 2015-10-24 17:00 +0200
[PATCH 3/9] leds: bcm6328: add missing of_node_put Julia Lawall <Julia.Lawall@lip6.fr> - 2015-10-24 17:00 +0200
[PATCH 7/9] gpu: host1x: add missing of_node_put Julia Lawall <Julia.Lawall@lip6.fr> - 2015-10-24 17:00 +0200
[PATCH 8/9] soc: ti: knav_qmss_queue: add missing of_node_put Julia Lawall <Julia.Lawall@lip6.fr> - 2015-10-24 17:00 +0200
Re: [PATCH 0/9] add missing of_node_put Jacek Anaszewski <j.anaszewski@samsung.com> - 2015-10-26 09:50 +0100
| From | Julia Lawall <Julia.Lawall@lip6.fr> |
|---|---|
| Date | 2015-10-24 17:00 +0200 |
| Subject | [PATCH 0/9] add missing of_node_put |
| Message-ID | <qn8sx-3q2-3@gated-at.bofh.it> |
The various for_each device_node iterators performs an of_node_get on each
iteration, so a break out of the loop requires an of_node_put.
The complete semantic patch that fixes this problem is
(http://coccinelle.lip6.fr):
// <smpl>
@r@
local idexpression n;
expression e1,e2;
iterator name for_each_node_by_name, for_each_node_by_type,
for_each_compatible_node, for_each_matching_node,
for_each_matching_node_and_match, for_each_child_of_node,
for_each_available_child_of_node, for_each_node_with_property;
iterator i;
statement S;
expression list [n1] es;
@@
(
(
for_each_node_by_name(n,e1) S
|
for_each_node_by_type(n,e1) S
|
for_each_compatible_node(n,e1,e2) S
|
for_each_matching_node(n,e1) S
|
for_each_matching_node_and_match(n,e1,e2) S
|
for_each_child_of_node(e1,n) S
|
for_each_available_child_of_node(e1,n) S
|
for_each_node_with_property(n,e1) S
)
&
i(es,n,...) S
)
@@
local idexpression r.n;
iterator r.i;
expression e;
expression list [r.n1] es;
@@
i(es,n,...) {
...
(
of_node_put(n);
|
e = n
|
return n;
|
+ of_node_put(n);
? return ...;
)
...
}
@@
local idexpression r.n;
iterator r.i;
expression e;
expression list [r.n1] es;
@@
i(es,n,...) {
...
(
of_node_put(n);
|
e = n
|
+ of_node_put(n);
? break;
)
...
}
... when != n
@@
local idexpression r.n;
iterator r.i;
expression e;
identifier l;
expression list [r.n1] es;
@@
i(es,n,...) {
...
(
of_node_put(n);
|
e = n
|
+ of_node_put(n);
? goto l;
)
...
}
...
l: ... when != n// </smpl>
---
drivers/bluetooth/btmrvl_main.c | 5 ++++-
drivers/gpu/drm/tegra/dc.c | 4 +++-
drivers/gpu/host1x/bus.c | 4 +++-
drivers/leds/leds-88pm860x.c | 1 +
drivers/leds/leds-bcm6328.c | 4 +++-
drivers/leds/leds-bcm6358.c | 4 +++-
drivers/leds/leds-powernv.c | 8 ++++++--
drivers/pinctrl/pinctrl-at91.c | 5 ++++-
drivers/soc/ti/knav_qmss_queue.c | 3 +++
9 files changed, 30 insertions(+), 8 deletions(-)
--
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| From | Julia Lawall <Julia.Lawall@lip6.fr> |
|---|---|
| Date | 2015-10-24 17:00 +0200 |
| Subject | [PATCH 4/9] leds: 88pm860x: add missing of_node_put |
| Message-ID | <qn8sy-3q2-13@gated-at.bofh.it> |
| In reply to | #1255199 |
for_each_child_of_node performs an of_node_get on each iteration, so
a break out of the loop requires an of_node_put.
A simplified version of the semantic patch that fixes this problem is as
follows (http://coccinelle.lip6.fr):
// <smpl>
@@
local idexpression n;
expression e,r;
@@
for_each_child_of_node(r,n) {
...
(
of_node_put(n);
|
e = n
|
+ of_node_put(n);
? break;
)
...
}
... when != n
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
---
drivers/leds/leds-88pm860x.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/leds/leds-88pm860x.c b/drivers/leds/leds-88pm860x.c
index 1497a09..7870840 100644
--- a/drivers/leds/leds-88pm860x.c
+++ b/drivers/leds/leds-88pm860x.c
@@ -142,6 +142,7 @@ static int pm860x_led_dt_init(struct platform_device *pdev,
of_property_read_u32(np, "marvell,88pm860x-iset",
&iset);
data->iset = PM8606_LED_CURRENT(iset);
+ of_node_put(np);
break;
}
}
--
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| From | Julia Lawall <Julia.Lawall@lip6.fr> |
|---|---|
| Date | 2015-10-24 17:00 +0200 |
| Subject | [PATCH 2/9] leds: bcm6358: add missing of_node_put |
| Message-ID | <qn8sy-3q2-17@gated-at.bofh.it> |
| In reply to | #1255199 |
for_each_available_child_of_node performs an of_node_get on each iteration, so
a break out of the loop requires an of_node_put.
A simplified version of the semantic patch that fixes this problem is as
follows (http://coccinelle.lip6.fr):
// <smpl>
@@
expression root,e;
local idexpression child;
@@
for_each_available_child_of_node(root, child) {
... when != of_node_put(child)
when != e = child
(
return child;
|
+ of_node_put(child);
? return ...;
)
...
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
---
drivers/leds/leds-bcm6358.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/leds/leds-bcm6358.c b/drivers/leds/leds-bcm6358.c
index 7ea3526..82b4ee1 100644
--- a/drivers/leds/leds-bcm6358.c
+++ b/drivers/leds/leds-bcm6358.c
@@ -215,8 +215,10 @@ static int bcm6358_leds_probe(struct platform_device *pdev)
}
rc = bcm6358_led(dev, child, reg, mem, lock);
- if (rc < 0)
+ if (rc < 0) {
+ of_node_put(child);
return rc;
+ }
}
return 0;
--
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| From | Julia Lawall <Julia.Lawall@lip6.fr> |
|---|---|
| Date | 2015-10-24 17:00 +0200 |
| Subject | [PATCH 3/9] leds: bcm6328: add missing of_node_put |
| Message-ID | <qn8sy-3q2-21@gated-at.bofh.it> |
| In reply to | #1255199 |
for_each_available_child_of_node performs an of_node_get on each iteration, so
a break out of the loop requires an of_node_put.
A simplified version of the semantic patch that fixes this problem is as
follows (http://coccinelle.lip6.fr):
// <smpl>
@@
expression root,e;
local idexpression child;
@@
for_each_available_child_of_node(root, child) {
... when != of_node_put(child)
when != e = child
(
return child;
|
+ of_node_put(child);
? return ...;
)
...
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
---
drivers/leds/leds-bcm6328.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/leds/leds-bcm6328.c b/drivers/leds/leds-bcm6328.c
index 18de094..c7ea5c6 100644
--- a/drivers/leds/leds-bcm6328.c
+++ b/drivers/leds/leds-bcm6328.c
@@ -403,8 +403,10 @@ static int bcm6328_leds_probe(struct platform_device *pdev)
rc = bcm6328_led(dev, child, reg, mem, lock,
blink_leds, blink_delay);
- if (rc < 0)
+ if (rc < 0) {
+ of_node_put(child);
return rc;
+ }
}
return 0;
--
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| From | Julia Lawall <Julia.Lawall@lip6.fr> |
|---|---|
| Date | 2015-10-24 17:00 +0200 |
| Subject | [PATCH 7/9] gpu: host1x: add missing of_node_put |
| Message-ID | <qn8sy-3q2-25@gated-at.bofh.it> |
| In reply to | #1255199 |
for_each_child_of_node performs an of_node_get on each iteration, so
a break out of the loop requires an of_node_put.
A simplified version of the semantic patch that fixes this problem is as
follows (http://coccinelle.lip6.fr):
// <smpl>
@@
expression root,e;
local idexpression child;
@@
for_each_child_of_node(root, child) {
... when != of_node_put(child)
when != e = child
(
return child;
|
+ of_node_put(child);
? return ...;
)
...
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
---
drivers/gpu/host1x/bus.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/host1x/bus.c b/drivers/gpu/host1x/bus.c
index 4a99c64..c1795a2 100644
--- a/drivers/gpu/host1x/bus.c
+++ b/drivers/gpu/host1x/bus.c
@@ -82,8 +82,10 @@ static int host1x_device_parse_dt(struct host1x_device *device,
if (of_match_node(driver->subdevs, np) &&
of_device_is_available(np)) {
err = host1x_subdev_add(device, np);
- if (err < 0)
+ if (err < 0) {
+ of_node_put(np);
return err;
+ }
}
}
--
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| From | Julia Lawall <Julia.Lawall@lip6.fr> |
|---|---|
| Date | 2015-10-24 17:00 +0200 |
| Subject | [PATCH 8/9] soc: ti: knav_qmss_queue: add missing of_node_put |
| Message-ID | <qn8sy-3q2-23@gated-at.bofh.it> |
| In reply to | #1255199 |
for_each_child_of_node performs an of_node_get on each iteration, so
a break out of the loop requires an of_node_put.
A simplified version of the semantic patch that fixes this problem is as
follows (http://coccinelle.lip6.fr):
// <smpl>
@@
expression root,e;
local idexpression child;
@@
for_each_child_of_node(root, child) {
... when != of_node_put(child)
when != e = child
(
return child;
|
+ of_node_put(child);
? return ...;
)
...
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
---
drivers/soc/ti/knav_qmss_queue.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/soc/ti/knav_qmss_queue.c b/drivers/soc/ti/knav_qmss_queue.c
index 89789e2..6f3d12b 100644
--- a/drivers/soc/ti/knav_qmss_queue.c
+++ b/drivers/soc/ti/knav_qmss_queue.c
@@ -1074,6 +1074,7 @@ static int knav_queue_setup_regions(struct knav_device *kdev,
region = devm_kzalloc(dev, sizeof(*region), GFP_KERNEL);
if (!region) {
dev_err(dev, "out of memory allocating region\n");
+ of_node_put(child);
return -ENOMEM;
}
@@ -1373,6 +1374,7 @@ static int knav_queue_init_qmgrs(struct knav_device *kdev,
qmgr = devm_kzalloc(dev, sizeof(*qmgr), GFP_KERNEL);
if (!qmgr) {
dev_err(dev, "out of memory allocating qmgr\n");
+ of_node_put(child);
return -ENOMEM;
}
@@ -1450,6 +1452,7 @@ static int knav_queue_init_pdsps(struct knav_device *kdev,
pdsp = devm_kzalloc(dev, sizeof(*pdsp), GFP_KERNEL);
if (!pdsp) {
dev_err(dev, "out of memory allocating pdsp\n");
+ of_node_put(child);
return -ENOMEM;
}
pdsp->name = knav_queue_find_name(child);
--
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| From | Jacek Anaszewski <j.anaszewski@samsung.com> |
|---|---|
| Date | 2015-10-26 09:50 +0100 |
| Message-ID | <qnLDz-60G-13@gated-at.bofh.it> |
| In reply to | #1255199 |
Hi Julia, Patches 1-4 have been applied to the LED tree, thanks. On 10/24/2015 04:42 PM, Julia Lawall wrote: > The various for_each device_node iterators performs an of_node_get on each > iteration, so a break out of the loop requires an of_node_put. > > The complete semantic patch that fixes this problem is > (http://coccinelle.lip6.fr): > [...] -- Best Regards, Jacek Anaszewski -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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