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Staging: bcm: Reverse semaphore locking in IOCTL_BCM_BUFFER_DOWNLOAD_STOP. 

This patch reorders the semaphore locking.
It makes better sense to first evaluate
fw_download_sema semaphore then
NVMRdmWrmLocl semaphore. The
fw_download_sema is suppose to be
acquired in the START ioctl.  If this is
not true, then it does not make sense
to continue.

Signed-off-by: Kevin McKinney <klmckinney1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Kevin McKinney 2011-11-27 20:51:47 -05:00 committed by Greg Kroah-Hartman
parent 8fbebb091a
commit 19a177e6fb
1 changed files with 5 additions and 5 deletions
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10
drivers/staging/bcm/Bcmchar.c
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@ -860,6 +860,11 @@ cntrlEnd:
}
case IOCTL_BCM_BUFFER_DOWNLOAD_STOP: {
if (!down_trylock(&Adapter->fw_download_sema)) {
up(&Adapter->fw_download_sema);
return -EINVAL;
}
if (down_trylock(&Adapter->NVMRdmWrmLock)) {
BCM_DEBUG_PRINT(Adapter, DBG_TYPE_PRINTK, 0, 0,
"FW download blocked as EEPROM Read/Write is in progress\n");
@ -867,11 +872,6 @@ cntrlEnd:
return -EACCES;
}
if (!down_trylock(&Adapter->fw_download_sema)) {
up(&Adapter->fw_download_sema);
return -EINVAL;
}
Adapter->bBinDownloaded = TRUE;
Adapter->bCfgDownloaded = TRUE;
atomic_set(&Adapter->CurrNumFreeTxDesc, 0);