staging: kpc2000: simplify comparison to NULL in dma.c

Fixes checkpatch warning "Comparison to NULL could be written [...]".

Signed-off-by: Simon Sandström <simon@nikanor.nu>
Link: https://lore.kernel.org/r/20190704060811.10330-3-simon@nikanor.nu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/kpc2000/kpc_dma/dma.c b/drivers/staging/kpc2000/kpc_dma/dma.c
index 8092d0cf4a4aedc0d8c34a06370a97a8284d67da..51a4dd534a0dc2839fae52dc75b6c32d2ad77ed3 100644 (file)
--- a/drivers/staging/kpc2000/kpc_dma/dma.c
+++ b/drivers/staging/kpc2000/kpc_dma/dma.c
@@ -119,7 +119,7 @@ int  setup_dma_engine(struct kpc_dma_device *eng, u32 desc_cnt)
        cur = eng->desc_pool_first;
        for (i = 1 ; i < eng->desc_pool_cnt ; i++) {
                next = dma_pool_alloc(eng->desc_pool, GFP_KERNEL | GFP_DMA, &next_handle);
-               if (next == NULL)
+               if (!next)
                        goto done_alloc;
 
                clear_desc(next);
@@ -245,7 +245,7 @@ int  count_descriptors_available(struct kpc_dma_device *eng)
 
 void  clear_desc(struct kpc_dma_descriptor *desc)
 {
-       if (desc == NULL)
+       if (!desc)
                return;
        desc->DescByteCount         = 0;
        desc->DescStatusErrorFlags  = 0;