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Date: Mon, 9 Oct 2017 17:15:46 -0700
From: Kees Cook <keescook@...omium.org>
To: "Martin K. Petersen" <martin.petersen@...cle.com>
Cc: Hannes Reinecke <hare@...e.com>,
"James E.J. Bottomley" <jejb@...ux.vnet.ibm.com>,
linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH] scsi/aic7xxx: Convert timers to use timer_setup()
stat_timer only ever assigns the same function and data, so consolidate
to using timer_setup(), adjust callback, drop everything else used
to pass things around, and remove needless typedefs.
reset_timer is unused; remove it.
Cc: Hannes Reinecke <hare@...e.com>
Cc: "James E.J. Bottomley" <jejb@...ux.vnet.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@...cle.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Kees Cook <keescook@...omium.org>
---
This requires commit 686fef928bba ("timer: Prepare to change timer
callback argument type") in v4.14-rc3, but should be otherwise
stand-alone.
---
drivers/scsi/aic7xxx/aic79xx.h | 5 +----
drivers/scsi/aic7xxx/aic79xx_core.c | 29 ++++++++---------------------
drivers/scsi/aic7xxx/aic79xx_osm.h | 7 -------
3 files changed, 9 insertions(+), 32 deletions(-)
diff --git a/drivers/scsi/aic7xxx/aic79xx.h b/drivers/scsi/aic7xxx/aic79xx.h
index d47b527b25dd..31f2bb9d7146 100644
--- a/drivers/scsi/aic7xxx/aic79xx.h
+++ b/drivers/scsi/aic7xxx/aic79xx.h
@@ -1046,8 +1046,6 @@ typedef enum {
typedef uint8_t ahd_mode_state;
-typedef void ahd_callback_t (void *);
-
struct ahd_completion
{
uint16_t tag;
@@ -1122,8 +1120,7 @@ struct ahd_softc {
/*
* Timer handles for timer driven callbacks.
*/
- ahd_timer_t reset_timer;
- ahd_timer_t stat_timer;
+ struct timer_list stat_timer;
/*
* Statistics.
diff --git a/drivers/scsi/aic7xxx/aic79xx_core.c b/drivers/scsi/aic7xxx/aic79xx_core.c
index 95d8f25cbcca..b560f396ee99 100644
--- a/drivers/scsi/aic7xxx/aic79xx_core.c
+++ b/drivers/scsi/aic7xxx/aic79xx_core.c
@@ -207,7 +207,7 @@ static void ahd_add_scb_to_free_list(struct ahd_softc *ahd,
static u_int ahd_rem_wscb(struct ahd_softc *ahd, u_int scbid,
u_int prev, u_int next, u_int tid);
static void ahd_reset_current_bus(struct ahd_softc *ahd);
-static ahd_callback_t ahd_stat_timer;
+static void ahd_stat_timer(struct timer_list *t);
#ifdef AHD_DUMP_SEQ
static void ahd_dumpseq(struct ahd_softc *ahd);
#endif
@@ -6104,8 +6104,7 @@ ahd_alloc(void *platform_arg, char *name)
ahd->bugs = AHD_BUGNONE;
ahd->flags = AHD_SPCHK_ENB_A|AHD_RESET_BUS_A|AHD_TERM_ENB_A
| AHD_EXTENDED_TRANS_A|AHD_STPWLEVEL_A;
- ahd_timer_init(&ahd->reset_timer);
- ahd_timer_init(&ahd->stat_timer);
+ timer_setup(&ahd->stat_timer, ahd_stat_timer, 0);
ahd->int_coalescing_timer = AHD_INT_COALESCING_TIMER_DEFAULT;
ahd->int_coalescing_maxcmds = AHD_INT_COALESCING_MAXCMDS_DEFAULT;
ahd->int_coalescing_mincmds = AHD_INT_COALESCING_MINCMDS_DEFAULT;
@@ -6235,8 +6234,7 @@ ahd_shutdown(void *arg)
/*
* Stop periodic timer callbacks.
*/
- ahd_timer_stop(&ahd->reset_timer);
- ahd_timer_stop(&ahd->stat_timer);
+ del_timer_sync(&ahd->stat_timer);
/* This will reset most registers to 0, but not all */
ahd_reset(ahd, /*reinit*/FALSE);
@@ -7039,20 +7037,11 @@ static const char *termstat_strings[] = {
};
/***************************** Timer Facilities *******************************/
-#define ahd_timer_init init_timer
-#define ahd_timer_stop del_timer_sync
-typedef void ahd_linux_callback_t (u_long);
-
static void
-ahd_timer_reset(ahd_timer_t *timer, int usec, ahd_callback_t *func, void *arg)
+ahd_timer_reset(struct timer_list *timer, int usec)
{
- struct ahd_softc *ahd;
-
- ahd = (struct ahd_softc *)arg;
del_timer(timer);
- timer->data = (u_long)arg;
timer->expires = jiffies + (usec * HZ)/1000000;
- timer->function = (ahd_linux_callback_t*)func;
add_timer(timer);
}
@@ -7279,8 +7268,7 @@ ahd_init(struct ahd_softc *ahd)
}
init_done:
ahd_restart(ahd);
- ahd_timer_reset(&ahd->stat_timer, AHD_STAT_UPDATE_US,
- ahd_stat_timer, ahd);
+ ahd_timer_reset(&ahd->stat_timer, AHD_STAT_UPDATE_US);
return (0);
}
@@ -8878,9 +8866,9 @@ ahd_reset_channel(struct ahd_softc *ahd, char channel, int initiate_reset)
/**************************** Statistics Processing ***************************/
static void
-ahd_stat_timer(void *arg)
+ahd_stat_timer(struct timer_list *t)
{
- struct ahd_softc *ahd = arg;
+ struct ahd_softc *ahd = from_timer(ahd, t, stat_timer);
u_long s;
int enint_coal;
@@ -8907,8 +8895,7 @@ ahd_stat_timer(void *arg)
ahd->cmdcmplt_bucket = (ahd->cmdcmplt_bucket+1) & (AHD_STAT_BUCKETS-1);
ahd->cmdcmplt_total -= ahd->cmdcmplt_counts[ahd->cmdcmplt_bucket];
ahd->cmdcmplt_counts[ahd->cmdcmplt_bucket] = 0;
- ahd_timer_reset(&ahd->stat_timer, AHD_STAT_UPDATE_US,
- ahd_stat_timer, ahd);
+ ahd_timer_reset(&ahd->stat_timer, AHD_STAT_UPDATE_US);
ahd_unlock(ahd, &s);
}
diff --git a/drivers/scsi/aic7xxx/aic79xx_osm.h b/drivers/scsi/aic7xxx/aic79xx_osm.h
index 728193a42e6e..8a8b7ae7aed3 100644
--- a/drivers/scsi/aic7xxx/aic79xx_osm.h
+++ b/drivers/scsi/aic7xxx/aic79xx_osm.h
@@ -203,9 +203,6 @@ int ahd_dmamap_unload(struct ahd_softc *, bus_dma_tag_t, bus_dmamap_t);
*/
#define ahd_dmamap_sync(ahd, dma_tag, dmamap, offset, len, op)
-/************************** Timer DataStructures ******************************/
-typedef struct timer_list ahd_timer_t;
-
/********************************** Includes **********************************/
#ifdef CONFIG_AIC79XX_REG_PRETTY_PRINT
#define AIC_DEBUG_REGISTERS 1
@@ -214,10 +211,6 @@ typedef struct timer_list ahd_timer_t;
#endif
#include "aic79xx.h"
-/***************************** Timer Facilities *******************************/
-#define ahd_timer_init init_timer
-#define ahd_timer_stop del_timer_sync
-
/***************************** SMP support ************************************/
#include <linux/spinlock.h>
--
2.7.4
--
Kees Cook
Pixel Security
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