From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
Date: Sun, 23 Apr 2017 10:47:04 +0200
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The script “checkpatch.pl” pointed information out like the following.
Comparison to NULL could be written …
Thus fix the affected source code places.
Signed-off-by: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
---
drivers/dma/k3dma.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/dma/k3dma.c b/drivers/dma/k3dma.c
index 31a51ee1a910..da20565f7a8d 100644
--- a/drivers/dma/k3dma.c
+++ b/drivers/dma/k3dma.c
@@ -230,7 +230,7 @@ static irqreturn_t k3_dma_int_handler(int irq, void *dev_id)
}
if (c && (tc2 & BIT(i))) {
spin_lock_irqsave(&c->vc.lock, flags);
- if (p->ds_run != NULL)
+ if (p->ds_run)
vchan_cyclic_callback(&p->ds_run->vd);
spin_unlock_irqrestore(&c->vc.lock, flags);
}
@@ -312,7 +312,7 @@ static void k3_dma_tasklet(unsigned long arg)
for (pch = 0; pch < d->dma_channels; pch++) {
p = &d->phy[pch];
- if (p->vchan == NULL && !list_empty(&d->chan_pending)) {
+ if (!p->vchan && !list_empty(&d->chan_pending)) {
c = list_first_entry(&d->chan_pending,
struct k3_dma_chan, node);
/* remove from d->chan_pending */
@@ -527,7 +527,7 @@ static struct dma_async_tx_descriptor *k3_dma_prep_slave_sg(
dma_addr_t addr, src = 0, dst = 0;
int num = sglen, i;
- if (sgl == NULL)
+ if (!sgl)
return NULL;
c->cyclic = 0;
@@ -645,7 +645,7 @@ static int k3_dma_config(struct dma_chan *chan,
u32 maxburst = 0, val = 0;
enum dma_slave_buswidth width = DMA_SLAVE_BUSWIDTH_UNDEFINED;
- if (cfg == NULL)
+ if (!cfg)
return -EINVAL;
c->dir = cfg->direction;
if (c->dir == DMA_DEV_TO_MEM) {
@@ -847,7 +847,7 @@ static int k3_dma_probe(struct platform_device *op)
/* init phy channel */
d->phy = devm_kcalloc(&op->dev, d->dma_channels, sizeof(*d->phy),
GFP_KERNEL);
- if (d->phy == NULL)
+ if (!d->phy)
return -ENOMEM;
for (i = 0; i < d->dma_channels; i++) {
@@ -877,7 +877,7 @@ static int k3_dma_probe(struct platform_device *op)
/* init virtual channel */
d->chans = devm_kcalloc(&op->dev, d->dma_requests, sizeof(*d->chans),
GFP_KERNEL);
- if (d->chans == NULL)
+ if (!d->chans)
return -ENOMEM;
for (i = 0; i < d->dma_requests; i++) {
--
2.12.2
--
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