[PATCH 4.19 049/234] random: remove unused irq_flags argument from add_interrupt_randomness()

From: Greg Kroah-Hartman
Date: Thu Jun 23 2022 - 13:57:04 EST


From: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>

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@xxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: Dexuan Cui <decui@xxxxxxxxxxxxx>
Cc: H. Peter Anvin <hpa@xxxxxxxxx>
Cc: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
Cc: Stephen Hemminger <sthemmin@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Wei Liu <wei.liu@xxxxxxxxxx>
Cc: linux-hyperv@xxxxxxxxxxxxxxx
Cc: x86@xxxxxxxxxx
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Acked-by: Wei Liu <wei.liu@xxxxxxxxxx>
Signed-off-by: Jason A. Donenfeld <Jason@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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);