summaryrefslogtreecommitdiffstats
path: root/scripts/coccinelle/misc/irqf_oneshot.cocci
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /scripts/coccinelle/misc/irqf_oneshot.cocci
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'scripts/coccinelle/misc/irqf_oneshot.cocci')
-rw-r--r--scripts/coccinelle/misc/irqf_oneshot.cocci113
1 files changed, 113 insertions, 0 deletions
diff --git a/scripts/coccinelle/misc/irqf_oneshot.cocci b/scripts/coccinelle/misc/irqf_oneshot.cocci
new file mode 100644
index 000000000..9b6f404d0
--- /dev/null
+++ b/scripts/coccinelle/misc/irqf_oneshot.cocci
@@ -0,0 +1,113 @@
+// SPDX-License-Identifier: GPL-2.0
+/// Since commit 1c6c69525b40 ("genirq: Reject bogus threaded irq requests")
+/// threaded IRQs without a primary handler need to be requested with
+/// IRQF_ONESHOT, otherwise the request will fail.
+///
+/// So pass the IRQF_ONESHOT flag in this case.
+///
+//
+// Confidence: Moderate
+// Comments:
+// Options: --no-includes
+
+virtual patch
+virtual context
+virtual org
+virtual report
+
+@r1@
+expression dev, irq, thread_fn;
+position p;
+@@
+(
+request_threaded_irq@p(irq, NULL, thread_fn,
+(
+IRQF_ONESHOT | ...
+|
+IRQF_ONESHOT
+)
+, ...)
+|
+devm_request_threaded_irq@p(dev, irq, NULL, thread_fn,
+(
+IRQF_ONESHOT | ...
+|
+IRQF_ONESHOT
+)
+, ...)
+)
+
+@r2@
+expression dev, irq, thread_fn, flags, e;
+position p != r1.p;
+@@
+(
+flags = IRQF_ONESHOT | ...
+|
+flags |= IRQF_ONESHOT | ...
+)
+... when != flags = e
+(
+request_threaded_irq@p(irq, NULL, thread_fn, flags, ...);
+|
+devm_request_threaded_irq@p(dev, irq, NULL, thread_fn, flags, ...);
+)
+
+@depends on patch@
+expression dev, irq, thread_fn, flags;
+position p != {r1.p,r2.p};
+@@
+(
+request_threaded_irq@p(irq, NULL, thread_fn,
+(
+-0
++IRQF_ONESHOT
+|
+-flags
++flags | IRQF_ONESHOT
+)
+, ...)
+|
+devm_request_threaded_irq@p(dev, irq, NULL, thread_fn,
+(
+-0
++IRQF_ONESHOT
+|
+-flags
++flags | IRQF_ONESHOT
+)
+, ...)
+)
+
+@depends on context@
+expression dev, irq;
+position p != {r1.p,r2.p};
+@@
+(
+*request_threaded_irq@p(irq, NULL, ...)
+|
+*devm_request_threaded_irq@p(dev, irq, NULL, ...)
+)
+
+
+@match depends on report || org@
+expression dev, irq;
+position p != {r1.p,r2.p};
+@@
+(
+request_threaded_irq@p(irq, NULL, ...)
+|
+devm_request_threaded_irq@p(dev, irq, NULL, ...)
+)
+
+@script:python depends on org@
+p << match.p;
+@@
+msg = "WARNING: Threaded IRQ with no primary handler requested without IRQF_ONESHOT (unless it is nested IRQ)"
+coccilib.org.print_todo(p[0],msg)
+
+@script:python depends on report@
+p << match.p;
+@@
+msg = "WARNING: Threaded IRQ with no primary handler requested without IRQF_ONESHOT (unless it is nested IRQ)"
+coccilib.report.print_report(p[0],msg)