[PATCH 1/5] net: ehea: semaphore to mutex

From: Daniel Walker
Date: Thu Mar 06 2008 - 22:32:52 EST


Converted the dlpar_mem_lock. With a bit of cleanup, I converted to
DEFINE_MUTEX() instead of a runtime init. I also made the lock static.

Signed-off-by: Daniel Walker <dwalker@xxxxxxxxxx>

---
drivers/net/ehea/ehea_main.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

Index: linux-2.6.24/drivers/net/ehea/ehea_main.c
===================================================================
--- linux-2.6.24.orig/drivers/net/ehea/ehea_main.c
+++ linux-2.6.24/drivers/net/ehea/ehea_main.c
@@ -36,6 +36,7 @@
#include <linux/notifier.h>
#include <linux/reboot.h>
#include <asm/kexec.h>
+#include <linux/mutex.h>

#include <net/ip.h>

@@ -99,7 +100,7 @@ static int port_name_cnt;
static LIST_HEAD(adapter_list);
u64 ehea_driver_flags;
struct work_struct ehea_rereg_mr_task;
-struct semaphore dlpar_mem_lock;
+static DEFINE_MUTEX(dlpar_mem_lock);
struct ehea_fw_handle_array ehea_fw_handles;
struct ehea_bcmc_reg_array ehea_bcmc_regs;

@@ -2830,7 +2831,7 @@ static void ehea_rereg_mrs(struct work_s
int ret, i;
struct ehea_adapter *adapter;

- down(&dlpar_mem_lock);
+ mutex_lock(&dlpar_mem_lock);
ehea_info("LPAR memory enlarged - re-initializing driver");

list_for_each_entry(adapter, &adapter_list, list)
@@ -2902,7 +2903,7 @@ static void ehea_rereg_mrs(struct work_s
}
}
}
- up(&dlpar_mem_lock);
+ mutex_unlock(&dlpar_mem_lock);
ehea_info("re-initializing driver complete");
out:
return;
@@ -3543,7 +3544,6 @@ int __init ehea_module_init(void)
memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));

- sema_init(&dlpar_mem_lock, 1);
sema_init(&ehea_fw_handles.lock, 1);
sema_init(&ehea_bcmc_regs.lock, 1);


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