[PATCH 2/3] staging: speakup: Clean up tests if NULL returned on failure

From: simran singhal
Date: Sat Mar 04 2017 - 11:48:11 EST


Some functions like kmalloc/kzalloc return NULL on failure.
When NULL represents failure, !x is commonly used.

This was done using Coccinelle:
@@
expression *e;
identifier l1;
@@

e = \(kmalloc\|kzalloc\|kcalloc\|devm_kzalloc\)(...);
...
- e == NULL
+ !e

Signed-off-by: simran singhal <singhalsimran0@xxxxxxxxx>
---
drivers/staging/speakup/main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/speakup/main.c b/drivers/staging/speakup/main.c
index c2f70ef..e8268bc 100644
--- a/drivers/staging/speakup/main.c
+++ b/drivers/staging/speakup/main.c
@@ -1324,7 +1324,7 @@ static int speakup_allocate(struct vc_data *vc)
if (speakup_console[vc_num] == NULL) {
speakup_console[vc_num] = kzalloc(sizeof(*speakup_console[0]),
GFP_ATOMIC);
- if (speakup_console[vc_num] == NULL)
+ if (!speakup_console[vc_num])
return -ENOMEM;
speakup_date(vc);
} else if (!spk_parked)
--
2.7.4