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IB/ipath: Convert ipath_eep_sem semaphore to a mutex 

Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Acked-by: Michael Albaugh <Michael.Albaugh@qlogic.com>
Tested-by: Arthur Jones <arthur.jones@qlogic.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Matthias Kaehlcke 2007-11-15 15:23:25 -08:00 committed by Roland Dreier
parent 727792da2b
commit 2c45688fae
3 changed files with 13 additions and 12 deletions
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20
drivers/infiniband/hw/ipath/ipath_eeprom.c
View File

@ -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");

2
drivers/infiniband/hw/ipath/ipath_init_chip.c
View File

@ -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;

3
drivers/infiniband/hw/ipath/ipath_kernel.h
View File

@ -41,6 +41,7 @@
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/mutex.h>
#include <asm/io.h>
#include <rdma/ib_verbs.h>
@ -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 */