Add NULL tests on various calls to kzalloc and devm_kzalloc.
The semantic match that finds these problems is as follows: (http://coccinelle.lip6.fr/)
// <smpl> @@ expression x,y; identifier fld; @@
( x = (vmalloc|kmalloc|kzalloc|kcalloc|kmem_cache_alloc|krealloc| kmemdup|kstrdup| devm_kzalloc|devm_kmalloc|devm_kcalloc|devm_kasprintf| kmalloc_array)(...,<+... __GFP_NOFAIL ...+>,...); | * x = (vmalloc|kmalloc|kzalloc|kcalloc|kmem_cache_alloc|krealloc| kmemdup|kstrdup| devm_kzalloc|devm_kmalloc|devm_kcalloc|devm_kasprintf| kmalloc_array)(...); ) ... when != (x) == NULL when != (x) != NULL when != (x) == 0 when != (x) != 0 when != x = y ( x->fld | *x | x[...] ) // </smpl>
---
drivers/s390/char/con3215.c | 2 ++ drivers/s390/char/raw3270.c | 2 ++ sound/soc/fsl/imx-pcm-dma.c | 2 ++ sound/soc/intel/baytrail/sst-baytrail-pcm.c | 2 ++ sound/soc/omap/omap-hdmi-audio.c | 2 ++ 5 files changed, 10 insertions(+)