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scsi: aacraid: Move code to wait for IO completion to shutdown func

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Ideally driver needs to wait for IO to be submitted or responded to before
shutdown.

Move code to wait for IO completion into shutdown path

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Raghava Aditya Renukunta
2017-12-26 20:34:29 -08:00
committed by Martin K. Petersen
parent 97a4e8ac3f
commit 216ced02fa
2 changed files with 36 additions and 25 deletions
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36
drivers/scsi/aacraid/comminit.c
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@@ -42,6 +42,8 @@
#include <linux/completion.h>
#include <linux/mm.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_cmnd.h>
#include "aacraid.h"
@@ -284,6 +286,38 @@ static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem,
q->entries = qsize;
}
static void aac_wait_for_io_completion(struct aac_dev *aac)
{
unsigned long flagv = 0;
int i = 0;
for (i = 60; i; --i) {
struct scsi_device *dev;
struct scsi_cmnd *command;
int active = 0;
__shost_for_each_device(dev, aac->scsi_host_ptr) {
spin_lock_irqsave(&dev->list_lock, flagv);
list_for_each_entry(command, &dev->cmd_list, list) {
if (command->SCp.phase == AAC_OWNER_FIRMWARE) {
active++;
break;
}
}
spin_unlock_irqrestore(&dev->list_lock, flagv);
if (active)
break;
}
/*
* We can exit If all the commands are complete
*/
if (active == 0)
break;
ssleep(1);
}
}
/**
* aac_send_shutdown - shutdown an adapter
* @dev: Adapter to shutdown
@@ -306,6 +340,8 @@ int aac_send_shutdown(struct aac_dev * dev)
mutex_unlock(&dev->ioctl_mutex);
}
aac_wait_for_io_completion(dev);
fibctx = aac_fib_alloc(dev);
if (!fibctx)
return -ENOMEM;