From: afzal mohammed <afzal.mohd.ma@gmail.com>
To: linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Sebastian Ott <sebott@linux.ibm.com>,
Peter Oberparleiter <oberpar@linux.ibm.com>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Thomas Gleixner <tglx@linutronix.de>
Subject: [PATCH 11/18] s390: replace setup_irq() by request_irq()
Date: Wed, 12 Feb 2020 13:34:37 +0530 [thread overview]
Message-ID: <30f6d47f87ec794ea3fb91387d43d19016fa10bc.1581478324.git.afzal.mohd.ma@gmail.com> (raw)
In-Reply-To: <cover.1581478323.git.afzal.mohd.ma@gmail.com>
request_irq() is preferred over setup_irq(). Existing callers of
setup_irq() reached mostly via 'init_IRQ()' & 'time_init()', while
memory allocators are ready by 'mm_init()'.
Per tglx[1], setup_irq() existed in olden days when allocators were not
ready by the time early interrupts were initialized.
Hence replace setup_irq() by request_irq().
Seldom remove_irq() usage has been observed coupled with setup_irq(),
wherever that has been found, it too has been replaced by free_irq().
[1] https://lkml.kernel.org/r/alpine.DEB.2.20.1710191609480.1971@nanos
Signed-off-by: afzal mohammed <afzal.mohd.ma@gmail.com>
---
Since cc'ing cover letter to all maintainers/reviewers would be too
many, refer for cover letter,
https://lkml.kernel.org/r/cover.1581478323.git.afzal.mohd.ma@gmail.com
arch/s390/kernel/irq.c | 8 ++------
drivers/s390/cio/airq.c | 8 ++------
drivers/s390/cio/cio.c | 8 ++------
3 files changed, 6 insertions(+), 18 deletions(-)
diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c
index 8371855042dc..6dd90e8d4e3a 100644
--- a/arch/s390/kernel/irq.c
+++ b/arch/s390/kernel/irq.c
@@ -294,11 +294,6 @@ static irqreturn_t do_ext_interrupt(int irq, void *dummy)
return IRQ_HANDLED;
}
-static struct irqaction external_interrupt = {
- .name = "EXT",
- .handler = do_ext_interrupt,
-};
-
void __init init_ext_interrupts(void)
{
int idx;
@@ -308,7 +303,8 @@ void __init init_ext_interrupts(void)
irq_set_chip_and_handler(EXT_INTERRUPT,
&dummy_irq_chip, handle_percpu_irq);
- setup_irq(EXT_INTERRUPT, &external_interrupt);
+ if (request_irq(EXT_INTERRUPT, do_ext_interrupt, 0, "EXT", NULL))
+ pr_err("request_irq() on %s failed\n", "EXT");
}
static DEFINE_SPINLOCK(irq_subclass_lock);
diff --git a/drivers/s390/cio/airq.c b/drivers/s390/cio/airq.c
index 427b2e24a8ce..773208a3bb68 100644
--- a/drivers/s390/cio/airq.c
+++ b/drivers/s390/cio/airq.c
@@ -105,16 +105,12 @@ static irqreturn_t do_airq_interrupt(int irq, void *dummy)
return IRQ_HANDLED;
}
-static struct irqaction airq_interrupt = {
- .name = "AIO",
- .handler = do_airq_interrupt,
-};
-
void __init init_airq_interrupts(void)
{
irq_set_chip_and_handler(THIN_INTERRUPT,
&dummy_irq_chip, handle_percpu_irq);
- setup_irq(THIN_INTERRUPT, &airq_interrupt);
+ if (request_irq(THIN_INTERRUPT, do_airq_interrupt, 0, "AIO", NULL))
+ pr_err("request_irq() on %s failed\n", "AIO");
}
static inline unsigned long iv_size(unsigned long bits)
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 18f5458f90e8..1b87e2e84007 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -563,16 +563,12 @@ static irqreturn_t do_cio_interrupt(int irq, void *dummy)
return IRQ_HANDLED;
}
-static struct irqaction io_interrupt = {
- .name = "I/O",
- .handler = do_cio_interrupt,
-};
-
void __init init_cio_interrupts(void)
{
irq_set_chip_and_handler(IO_INTERRUPT,
&dummy_irq_chip, handle_percpu_irq);
- setup_irq(IO_INTERRUPT, &io_interrupt);
+ if (request_irq(IO_INTERRUPT, do_cio_interrupt, 0, "I/O", NULL))
+ pr_err("request_irq() on %s failed\n", "I/O");
}
#ifdef CONFIG_CCW_CONSOLE
--
2.24.1
next prev parent reply other threads:[~2020-02-12 8:04 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-12 8:01 [PATCH 00/18] genirq: Remove setup_irq() afzal mohammed
2020-02-12 8:02 ` [PATCH 01/18] alpha: replace setup_irq() by request_irq() afzal mohammed
2020-02-12 8:02 ` [PATCH 02/18] ARM: " afzal mohammed
2020-02-12 8:10 ` Viresh Kumar
2020-02-12 23:27 ` Alexander Sverdlin
2020-02-12 8:02 ` [PATCH 03/18] c6x: " afzal mohammed
2020-02-13 17:37 ` Mark Salter
2020-02-12 8:03 ` [PATCH 04/18] hexagon: " afzal mohammed
2020-02-12 8:03 ` [PATCH 05/18] ia64: " afzal mohammed
2020-02-12 8:03 ` [PATCH 06/18] m68k: Replace " afzal mohammed
2020-02-12 22:25 ` Finn Thain
2020-02-13 2:03 ` afzal mohammed
2020-02-13 7:11 ` Greg Ungerer
2020-02-14 13:07 ` afzal mohammed
2020-02-12 8:03 ` [PATCH 07/18] microblaze: " afzal mohammed
2020-02-12 8:04 ` [PATCH 08/18] MIPS: " afzal mohammed
2020-02-12 8:04 ` [PATCH 09/18] parisc: " afzal mohammed
2020-02-12 8:04 ` [PATCH 10/18] powerpc: " afzal mohammed
2020-02-13 10:59 ` Christophe Leroy
2020-02-12 8:04 ` afzal mohammed [this message]
2020-02-12 8:04 ` [PATCH 12/18] sh: replace " afzal mohammed
2020-02-12 8:05 ` [PATCH 13/18] unicore32: " afzal mohammed
2020-02-12 8:05 ` [PATCH 14/18] x86: Replace " afzal mohammed
2020-02-27 10:49 ` Thomas Gleixner
2020-02-27 11:36 ` afzal mohammed
2020-02-27 13:29 ` Thomas Gleixner
2020-02-27 14:26 ` afzal mohammed
2020-02-12 8:05 ` [PATCH 15/18] xtensa: replace " afzal mohammed
2020-02-12 9:10 ` Max Filippov
2020-02-12 8:05 ` [PATCH 16/18] clocksource: Replace " afzal mohammed
2020-02-20 11:13 ` Daniel Lezcano
2020-02-20 14:48 ` Linus Walleij
2020-02-12 8:05 ` [PATCH 17/18] irqchip: " afzal mohammed
[not found] ` <8e00874d072f32496c2d0da05423bda1cadd6975.1581478324.git.afzal.mohd.ma@gmail. com>
2020-02-13 16:02 ` Paul Cercueil
2020-02-12 8:06 ` [PATCH 18/18] genirq: Remove setup_irq() and remove_irq() afzal mohammed
2020-02-20 14:49 ` Linus Walleij
2020-02-27 10:31 ` [PATCH 00/18] genirq: Remove setup_irq() Thomas Gleixner
2020-02-27 11:07 ` afzal mohammed
2020-03-21 17:43 ` afzal mohammed
2020-03-27 16:08 ` [PATCH 0/6] Kill setup_irq() afzal mohammed
2020-03-27 16:09 ` [PATCH v5 1/6] alpha: Replace setup_irq() by request_irq() afzal mohammed
2020-03-27 16:09 ` [PATCH v5 2/6] c6x: replace " afzal mohammed
2020-03-27 16:09 ` [PATCH v5 3/6] hexagon: " afzal mohammed
2020-03-27 16:10 ` [PATCH v5 4/6] sh: " afzal mohammed
2020-03-27 16:10 ` [PATCH v5 5/6] unicore32: " afzal mohammed
2020-03-27 16:11 ` [PATCH v5 6/6] genirq: Remove setup_irq() and remove_irq() afzal mohammed
2020-04-11 14:10 ` afzal mohammed
2020-03-28 2:48 ` [PATCH 0/6] Kill setup_irq() Brian Cain
2020-03-28 7:32 ` afzal mohammed
2020-04-02 15:03 ` Brian Cain
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