linux-kernel - [PATCH 4.19 049/234] random: remove unused irq_flags argument from add_interrupt

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Message-Id: <20220623164344.454446083@linuxfoundation.org>
Date:   Thu, 23 Jun 2022 18:41:56 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Dexuan Cui <decui@...rosoft.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Ingo Molnar <mingo@...hat.com>,
        "K. Y. Srinivasan" <kys@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Wei Liu <wei.liu@...nel.org>, linux-hyperv@...r.kernel.org,
        x86@...nel.org, Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        "Jason A. Donenfeld" <Jason@...c4.com>
Subject: [PATCH 4.19 049/234] random: remove unused irq_flags argument from add_interrupt_randomness()

From: Sebastian Andrzej Siewior <bigeasy@...utronix.de>

commit 703f7066f40599c290babdb79dd61319264987e9 upstream.

Since commit
   ee3e00e9e7101 ("random: use registers from interrupted code for CPU's w/o a cycle counter")

the irq_flags argument is no longer used.

Remove unused irq_flags.

Cc: Borislav Petkov <bp@...en8.de>
Cc: Dave Hansen <dave.hansen@...ux.intel.com>
Cc: Dexuan Cui <decui@...rosoft.com>
Cc: H. Peter Anvin <hpa@...or.com>
Cc: Haiyang Zhang <haiyangz@...rosoft.com>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: K. Y. Srinivasan <kys@...rosoft.com>
Cc: Stephen Hemminger <sthemmin@...rosoft.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Wei Liu <wei.liu@...nel.org>
Cc: linux-hyperv@...r.kernel.org
Cc: x86@...nel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Acked-by: Wei Liu <wei.liu@...nel.org>
Signed-off-by: Jason A. Donenfeld <Jason@...c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/char/random.c  |    4 ++--
 drivers/hv/hv.c        |    2 +-
 drivers/hv/vmbus_drv.c |    2 +-
 include/linux/random.h |    2 +-
 kernel/irq/handle.c    |    2 +-
 5 files changed, 6 insertions(+), 6 deletions(-)

--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -200,7 +200,7 @@
  *	void add_device_randomness(const void *buf, unsigned int size);
  * 	void add_input_randomness(unsigned int type, unsigned int code,
  *                                unsigned int value);
- *	void add_interrupt_randomness(int irq, int irq_flags);
+ *	void add_interrupt_randomness(int irq);
  * 	void add_disk_randomness(struct gendisk *disk);
  *	void add_hwgenerator_randomness(const char *buffer, size_t count,
  *					size_t entropy);
@@ -1272,7 +1272,7 @@ static __u32 get_reg(struct fast_pool *f
 	return *ptr;
 }
 
-void add_interrupt_randomness(int irq, int irq_flags)
+void add_interrupt_randomness(int irq)
 {
 	struct entropy_store	*r;
 	struct fast_pool	*fast_pool = this_cpu_ptr(&irq_randomness);
--- a/drivers/hv/hv.c
+++ b/drivers/hv/hv.c
@@ -115,7 +115,7 @@ static void hv_stimer0_isr(void)
 
 	hv_cpu = this_cpu_ptr(hv_context.cpu_context);
 	hv_cpu->clk_evt->event_handler(hv_cpu->clk_evt);
-	add_interrupt_randomness(stimer0_vector, 0);
+	add_interrupt_randomness(stimer0_vector);
 }
 
 static int hv_ce_set_next_event(unsigned long delta,
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -1146,7 +1146,7 @@ static void vmbus_isr(void)
 			tasklet_schedule(&hv_cpu->msg_dpc);
 	}
 
-	add_interrupt_randomness(HYPERVISOR_CALLBACK_VECTOR, 0);
+	add_interrupt_randomness(HYPERVISOR_CALLBACK_VECTOR);
 }
 
 /*
--- a/include/linux/random.h
+++ b/include/linux/random.h
@@ -35,7 +35,7 @@ static inline void add_latent_entropy(vo
 
 extern void add_input_randomness(unsigned int type, unsigned int code,
 				 unsigned int value) __latent_entropy;
-extern void add_interrupt_randomness(int irq, int irq_flags) __latent_entropy;
+extern void add_interrupt_randomness(int irq) __latent_entropy;
 
 extern void get_random_bytes(void *buf, int nbytes);
 extern int wait_for_random_bytes(void);
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -188,7 +188,7 @@ irqreturn_t handle_irq_event_percpu(stru
 
 	retval = __handle_irq_event_percpu(desc, &flags);
 
-	add_interrupt_randomness(desc->irq_data.irq, flags);
+	add_interrupt_randomness(desc->irq_data.irq);
 
 	if (!noirqdebug)
 		note_interrupt(desc, retval);