From 2c45688faed1b19583c388694025e39001b68c8d Mon Sep 17 00:00:00 2001 From: Matthias Kaehlcke Date: Thu, 15 Nov 2007 15:23:25 -0800 Subject: [PATCH] IB/ipath: Convert ipath_eep_sem semaphore to a mutex Signed-off-by: Matthias Kaehlcke Acked-by: Michael Albaugh Tested-by: Arthur Jones Signed-off-by: Andrew Morton Signed-off-by: Roland Dreier --- drivers/infiniband/hw/ipath/ipath_eeprom.c | 20 +++++++++---------- drivers/infiniband/hw/ipath/ipath_init_chip.c | 2 +- drivers/infiniband/hw/ipath/ipath_kernel.h | 3 ++- 3 files changed, 13 insertions(+), 12 deletions(-) diff --git a/drivers/infiniband/hw/ipath/ipath_eeprom.c b/drivers/infiniband/hw/ipath/ipath_eeprom.c index e7c25dbbcdc9..a5b6299ed667 100644 --- a/drivers/infiniband/hw/ipath/ipath_eeprom.c +++ b/drivers/infiniband/hw/ipath/ipath_eeprom.c @@ -510,10 +510,10 @@ int ipath_eeprom_read(struct ipath_devdata *dd, u8 eeprom_offset, { int ret; - ret = down_interruptible(&dd->ipath_eep_sem); + ret = mutex_lock_interruptible(&dd->ipath_eep_lock); if (!ret) { ret = ipath_eeprom_internal_read(dd, eeprom_offset, buff, len); - up(&dd->ipath_eep_sem); + mutex_unlock(&dd->ipath_eep_lock); } return ret; @@ -524,10 +524,10 @@ int ipath_eeprom_write(struct ipath_devdata *dd, u8 eeprom_offset, { int ret; - ret = down_interruptible(&dd->ipath_eep_sem); + ret = mutex_lock_interruptible(&dd->ipath_eep_lock); if (!ret) { ret = ipath_eeprom_internal_write(dd, eeprom_offset, buff, len); - up(&dd->ipath_eep_sem); + mutex_unlock(&dd->ipath_eep_lock); } return ret; @@ -616,9 +616,9 @@ void ipath_get_eeprom_info(struct ipath_devdata *dd) goto bail; } - down(&dd->ipath_eep_sem); + mutex_lock(&dd->ipath_eep_lock); eep_stat = ipath_eeprom_internal_read(dd, 0, buf, len); - up(&dd->ipath_eep_sem); + mutex_unlock(&dd->ipath_eep_lock); if (eep_stat) { ipath_dev_err(dd, "Failed reading GUID from eeprom\n"); @@ -764,14 +764,14 @@ int ipath_update_eeprom_log(struct ipath_devdata *dd) /* Grab semaphore and read current EEPROM. If we get an * error, let go, but if not, keep it until we finish write. */ - ret = down_interruptible(&dd->ipath_eep_sem); + ret = mutex_lock_interruptible(&dd->ipath_eep_lock); if (ret) { ipath_dev_err(dd, "Unable to acquire EEPROM for logging\n"); goto free_bail; } ret = ipath_eeprom_internal_read(dd, 0, buf, len); if (ret) { - up(&dd->ipath_eep_sem); + mutex_unlock(&dd->ipath_eep_lock); ipath_dev_err(dd, "Unable read EEPROM for logging\n"); goto free_bail; } @@ -779,7 +779,7 @@ int ipath_update_eeprom_log(struct ipath_devdata *dd) csum = flash_csum(ifp, 0); if (csum != ifp->if_csum) { - up(&dd->ipath_eep_sem); + mutex_unlock(&dd->ipath_eep_lock); ipath_dev_err(dd, "EEPROM cks err (0x%02X, S/B 0x%02X)\n", csum, ifp->if_csum); ret = 1; @@ -849,7 +849,7 @@ int ipath_update_eeprom_log(struct ipath_devdata *dd) csum = flash_csum(ifp, 1); ret = ipath_eeprom_internal_write(dd, 0, buf, hi_water + 1); } - up(&dd->ipath_eep_sem); + mutex_unlock(&dd->ipath_eep_lock); if (ret) ipath_dev_err(dd, "Failed updating EEPROM\n"); diff --git a/drivers/infiniband/hw/ipath/ipath_init_chip.c b/drivers/infiniband/hw/ipath/ipath_init_chip.c index 9dd0bacf8461..9e9d6fafcf0d 100644 --- a/drivers/infiniband/hw/ipath/ipath_init_chip.c +++ b/drivers/infiniband/hw/ipath/ipath_init_chip.c @@ -348,7 +348,7 @@ static int init_chip_first(struct ipath_devdata *dd, spin_lock_init(&dd->ipath_gpio_lock); spin_lock_init(&dd->ipath_eep_st_lock); - sema_init(&dd->ipath_eep_sem, 1); + mutex_init(&dd->ipath_eep_lock); done: *pdp = pd; diff --git a/drivers/infiniband/hw/ipath/ipath_kernel.h b/drivers/infiniband/hw/ipath/ipath_kernel.h index bb1dc075f1d1..1ef82d6bf377 100644 --- a/drivers/infiniband/hw/ipath/ipath_kernel.h +++ b/drivers/infiniband/hw/ipath/ipath_kernel.h @@ -41,6 +41,7 @@ #include #include #include +#include #include #include @@ -616,7 +617,7 @@ struct ipath_devdata { /* control access to actual counters, timer */ spinlock_t ipath_eep_st_lock; /* control high-level access to EEPROM */ - struct semaphore ipath_eep_sem; + struct mutex ipath_eep_lock; /* Below inc'd by ipath_snap_cntrs(), locked by ipath_eep_st_lock */ uint64_t ipath_traffic_wds; /* active time is kept in seconds, but logged in hours */ -- 2.30.2