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[POWERPC] viopath: Use completion

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Use a completion instead of abusing a semaphore for hypervisor event
completion in viopath.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Christoph Hellwig 2007-05-14 01:50:27 +10:00 committed by Paul Mackerras
parent e38e345880
commit 9d561ed46e
1 changed files with 5 additions and 4 deletions
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9
arch/powerpc/platforms/iseries/viopath.c
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@ -37,6 +37,7 @@
#include <linux/wait.h>
#include <linux/seq_file.h>
#include <linux/interrupt.h>
#include <linux/completion.h>
#include <asm/system.h>
#include <asm/uaccess.h>
@ -115,7 +116,7 @@ static int proc_viopath_show(struct seq_file *m, void *v)
u16 vlanMap;
dma_addr_t handle;
HvLpEvent_Rc hvrc;
DECLARE_MUTEX_LOCKED(Semaphore);
DECLARE_COMPLETION(done);
struct device_node *node;
const char *sysid;
@ -132,13 +133,13 @@ static int proc_viopath_show(struct seq_file *m, void *v)
HvLpEvent_AckInd_DoAck, HvLpEvent_AckType_ImmediateAck,
viopath_sourceinst(viopath_hostLp),
viopath_targetinst(viopath_hostLp),
(u64)(unsigned long)&Semaphore, VIOVERSION << 16,
(u64)(unsigned long)&done, VIOVERSION << 16,
((u64)handle) << 32, HW_PAGE_SIZE, 0, 0);
if (hvrc != HvLpEvent_Rc_Good)
printk(VIOPATH_KERN_WARN "hv error on op %d\n", (int)hvrc);
down(&Semaphore);
wait_for_completion(&done);
vlanMap = HvLpConfig_getVirtualLanIndexMap();
@ -353,7 +354,7 @@ static void handleConfig(struct HvLpEvent *event)
return;
}
up((struct semaphore *)event->xCorrelationToken);
complete((struct completion *)event->xCorrelationToken);
}
/*