From f36d4024caa3790606e43228a574157c45b73b22 Mon Sep 17 00:00:00 2001 From: Aleksey Makarov Date: Mon, 9 Jan 2006 15:59:27 -0800 Subject: [PATCH] [PATCH] mutex subsystem, semaphore to completion: IDE ->gendev_rel_sem The patch changes semaphores that are initialized as locked to complete(). Source: MontaVista Software, Inc. Modified-by: Steven Rostedt The following patch is from Montavista. I modified it slightly. Semaphores are currently being used where it makes more sense for completions. This patch corrects that. Signed-off-by: Aleksey Makarov Signed-off-by: Steven Rostedt Signed-off-by: Ingo Molnar --- drivers/ide/ide-probe.c | 4 ++-- drivers/ide/ide.c | 8 ++++---- include/linux/ide.h | 5 +++-- 3 files changed, 9 insertions(+), 8 deletions(-) diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c index 1ddaa71..7cb2d86 100644 --- a/drivers/ide/ide-probe.c +++ b/drivers/ide/ide-probe.c @@ -655,7 +655,7 @@ static void hwif_release_dev (struct device *dev) { ide_hwif_t *hwif = container_of(dev, ide_hwif_t, gendev); - up(&hwif->gendev_rel_sem); + complete(&hwif->gendev_rel_comp); } static void hwif_register (ide_hwif_t *hwif) @@ -1327,7 +1327,7 @@ static void drive_release_dev (struct device *dev) drive->queue = NULL; spin_unlock_irq(&ide_lock); - up(&drive->gendev_rel_sem); + complete(&drive->gendev_rel_comp); } /* diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c index b069b13..ec5a4cb 100644 --- a/drivers/ide/ide.c +++ b/drivers/ide/ide.c @@ -222,7 +222,7 @@ static void init_hwif_data(ide_hwif_t *hwif, unsigned int index) hwif->mwdma_mask = 0x80; /* disable all mwdma */ hwif->swdma_mask = 0x80; /* disable all swdma */ - sema_init(&hwif->gendev_rel_sem, 0); + init_completion(&hwif->gendev_rel_comp); default_hwif_iops(hwif); default_hwif_transport(hwif); @@ -245,7 +245,7 @@ static void init_hwif_data(ide_hwif_t *hwif, unsigned int index) drive->is_flash = 0; drive->vdma = 0; INIT_LIST_HEAD(&drive->list); - sema_init(&drive->gendev_rel_sem, 0); + init_completion(&drive->gendev_rel_comp); } } @@ -602,7 +602,7 @@ void ide_unregister(unsigned int index) } spin_unlock_irq(&ide_lock); device_unregister(&drive->gendev); - down(&drive->gendev_rel_sem); + wait_for_completion(&drive->gendev_rel_comp); spin_lock_irq(&ide_lock); } hwif->present = 0; @@ -662,7 +662,7 @@ void ide_unregister(unsigned int index) /* More messed up locking ... */ spin_unlock_irq(&ide_lock); device_unregister(&hwif->gendev); - down(&hwif->gendev_rel_sem); + wait_for_completion(&hwif->gendev_rel_comp); /* * Remove us from the kernel's knowledge diff --git a/include/linux/ide.h b/include/linux/ide.h index ef8d0cb..9a8c05d 100644 --- a/include/linux/ide.h +++ b/include/linux/ide.h @@ -18,6 +18,7 @@ #include #include #include +#include #include #include #include @@ -638,7 +639,7 @@ typedef struct ide_drive_s { int crc_count; /* crc counter to reduce drive speed */ struct list_head list; struct device gendev; - struct semaphore gendev_rel_sem; /* to deal with device release() */ + struct completion gendev_rel_comp; /* to deal with device release() */ } ide_drive_t; #define to_ide_device(dev)container_of(dev, ide_drive_t, gendev) @@ -794,7 +795,7 @@ typedef struct hwif_s { unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */ struct device gendev; - struct semaphore gendev_rel_sem; /* To deal with device release() */ + struct completion gendev_rel_comp; /* To deal with device release() */ void *hwif_data; /* extra hwif data */ -- 2.7.4