From: Kees Cook <keescook@chromium.org>
Date: Tue, 17 Oct 2017 21:10:19 -0700
Subject: [PATCH] lightnvm: Convert timers to use timer_setup()
Git-commit: 87c1d2d373c2dfc9993f09c3cfd69cf2c3347b20
Patch-mainline: v4.15-rc1
References: bsc#1104967,FATE#325924

In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: Matias Bjorling <mb@lightnvm.io>
Cc: linux-block@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Hannes Reinecke <hare@suse.com>
---
 drivers/lightnvm/pblk-core.c | 4 ++--
 drivers/lightnvm/pblk-gc.c   | 6 +++---
 drivers/lightnvm/pblk-init.c | 2 +-
 drivers/lightnvm/pblk-rl.c   | 6 +++---
 drivers/lightnvm/pblk.h      | 2 +-
 drivers/lightnvm/rrpc.c      | 6 +++---
 6 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c
index ce90213a42fa..76516ee84e9a 100644
--- a/drivers/lightnvm/pblk-core.c
+++ b/drivers/lightnvm/pblk-core.c
@@ -270,9 +270,9 @@ static void pblk_write_kick(struct pblk *pblk)
 	mod_timer(&pblk->wtimer, jiffies + msecs_to_jiffies(1000));
 }
 
-void pblk_write_timer_fn(unsigned long data)
+void pblk_write_timer_fn(struct timer_list *t)
 {
-	struct pblk *pblk = (struct pblk *)data;
+	struct pblk *pblk = from_timer(pblk, t, wtimer);
 
 	/* kick the write thread every tick to flush outstanding data */
 	pblk_write_kick(pblk);
diff --git a/drivers/lightnvm/pblk-gc.c b/drivers/lightnvm/pblk-gc.c
index 00d5698d64a9..9c8e114c8a54 100644
--- a/drivers/lightnvm/pblk-gc.c
+++ b/drivers/lightnvm/pblk-gc.c
@@ -442,9 +442,9 @@ static void pblk_gc_run(struct pblk *pblk)
 		goto next_gc_group;
 }
 
-static void pblk_gc_timer(unsigned long data)
+static void pblk_gc_timer(struct timer_list *t)
 {
-	struct pblk *pblk = (struct pblk *)data;
+	struct pblk *pblk = from_timer(pblk, t, gc.gc_timer);
 
 	pblk_gc_kick(pblk);
 }
@@ -601,7 +601,7 @@ int pblk_gc_init(struct pblk *pblk)
 		goto fail_free_writer_kthread;
 	}
 
-	setup_timer(&gc->gc_timer, pblk_gc_timer, (unsigned long)pblk);
+	timer_setup(&gc->gc_timer, pblk_gc_timer, 0);
 	mod_timer(&gc->gc_timer, jiffies + msecs_to_jiffies(GC_TIME_MSECS));
 
 	gc->gc_active = 0;
diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c
index f62112ba5482..695826a06b5d 100644
--- a/drivers/lightnvm/pblk-init.c
+++ b/drivers/lightnvm/pblk-init.c
@@ -866,7 +866,7 @@ static int pblk_lines_init(struct pblk *pblk)
 
 static int pblk_writer_init(struct pblk *pblk)
 {
-	setup_timer(&pblk->wtimer, pblk_write_timer_fn, (unsigned long)pblk);
+	timer_setup(&pblk->wtimer, pblk_write_timer_fn, 0);
 	mod_timer(&pblk->wtimer, jiffies + msecs_to_jiffies(100));
 
 	pblk->writer_ts = kthread_create(pblk_write_ts, pblk, "pblk-writer-t");
diff --git a/drivers/lightnvm/pblk-rl.c b/drivers/lightnvm/pblk-rl.c
index abae31fd434e..dacc71922260 100644
--- a/drivers/lightnvm/pblk-rl.c
+++ b/drivers/lightnvm/pblk-rl.c
@@ -158,9 +158,9 @@ int pblk_rl_max_io(struct pblk_rl *rl)
 	return rl->rb_max_io;
 }
 
-static void pblk_rl_u_timer(unsigned long data)
+static void pblk_rl_u_timer(struct timer_list *t)
 {
-	struct pblk_rl *rl = (struct pblk_rl *)data;
+	struct pblk_rl *rl = from_timer(rl, t, u_timer);
 
 	/* Release user I/O state. Protect from GC */
 	smp_store_release(&rl->rb_user_active, 0);
@@ -202,7 +202,7 @@ void pblk_rl_init(struct pblk_rl *rl, int budget)
 	atomic_set(&rl->rb_gc_cnt, 0);
 	atomic_set(&rl->rb_space, -1);
 
-	setup_timer(&rl->u_timer, pblk_rl_u_timer, (unsigned long)rl);
+	timer_setup(&rl->u_timer, pblk_rl_u_timer, 0);
 
 	rl->rb_user_active = 0;
 	rl->rb_gc_active = 0;
diff --git a/drivers/lightnvm/pblk.h b/drivers/lightnvm/pblk.h
index 90961033a79f..59a64d461a5d 100644
--- a/drivers/lightnvm/pblk.h
+++ b/drivers/lightnvm/pblk.h
@@ -797,7 +797,7 @@ void pblk_map_rq(struct pblk *pblk, struct nvm_rq *rqd, unsigned int sentry,
  * pblk write thread
  */
 int pblk_write_ts(void *data);
-void pblk_write_timer_fn(unsigned long data);
+void pblk_write_timer_fn(struct timer_list *t);
 void pblk_write_should_kick(struct pblk *pblk);
 
 /*
diff --git a/drivers/lightnvm/rrpc.c b/drivers/lightnvm/rrpc.c
index 267f01ae87e4..0993c14be860 100644
--- a/drivers/lightnvm/rrpc.c
+++ b/drivers/lightnvm/rrpc.c
@@ -267,9 +267,9 @@ static void rrpc_gc_kick(struct rrpc *rrpc)
 /*
  * timed GC every interval.
  */
-static void rrpc_gc_timer(unsigned long data)
+static void rrpc_gc_timer(struct timer_list *t)
 {
-	struct rrpc *rrpc = (struct rrpc *)data;
+	struct rrpc *rrpc = from_timer(rrpc, t, gc_timer);
 
 	rrpc_gc_kick(rrpc);
 	mod_timer(&rrpc->gc_timer, jiffies + msecs_to_jiffies(10));
@@ -1063,7 +1063,7 @@ static int rrpc_gc_init(struct rrpc *rrpc)
 	if (!rrpc->kgc_wq)
 		return -ENOMEM;
 
-	setup_timer(&rrpc->gc_timer, rrpc_gc_timer, (unsigned long)rrpc);
+	timer_setup(&rrpc->gc_timer, rrpc_gc_timer, 0);
 
 	return 0;
 }
-- 
2.12.3