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NTB: Fix incorrect return check in ntb_perf

Browse source 
kthread_create_no_node() returns error pointers, never NULL. Fix check so
it handles error correctly.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
This commit is contained in:
Dave Jiang 2016-03-18 16:39:41 -07:00 committed by Jon Mason
parent 2572c7fb4e
commit ddc8f6feec
1 changed files with 3 additions and 4 deletions
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7
drivers/ntb/test/ntb_perf.c
View file

@ -615,9 +615,7 @@ static ssize_t debugfs_run_write(struct file *filp, const char __user *ubuf,
kthread_create_on_node(ntb_perf_thread,
(void *)pctx,
node, "ntb_perf %d", i);
if (pctx->thread)
wake_up_process(pctx->thread);
else {
if (IS_ERR(pctx->thread)) {
perf->run = false;
for (i = 0; i < MAX_THREADS; i++) {
if (pctx->thread) {
@ -625,7 +623,8 @@ static ssize_t debugfs_run_write(struct file *filp, const char __user *ubuf,
pctx->thread = NULL;
}
}
}
} else
wake_up_process(pctx->thread);
if (perf->run == false)
return -ENXIO;