Re: [PATCH V3 4/4] dma: add Qualcomm Technologies HIDMA channel driver

From: Sinan Kaya
Date: Sun Nov 08 2015 - 19:44:07 EST

On 11/8/2015 2:13 PM, kbuild test robot wrote:
Hi Sinan,

[auto build test WARNING on: robh/for-next]
[also build test WARNING on: v4.3 next-20151106]

base: for-next
config: mn10300-allyesconfig (attached as .config)
wget -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=mn10300

All warnings (new ones prefixed by >>):

In file included from include/linux/printk.h:277:0,
from include/linux/kernel.h:13,
from include/linux/list.h:8,
from include/linux/kobject.h:20,
from include/linux/device.h:17,
from include/linux/dmaengine.h:20,
from drivers/dma/qcom/hidma.c:45:
drivers/dma/qcom/hidma.c: In function 'hidma_prep_dma_memcpy':
include/linux/dynamic_debug.h:64:16: warning: format '%zu' expects argument of type 'size_t', but argument 7 has type 'unsigned int' [-Wformat=]
static struct _ddebug __aligned(8) \
include/linux/dynamic_debug.h:84:2: note: in expansion of macro 'DEFINE_DYNAMIC_DEBUG_METADATA'
include/linux/device.h:1171:2: note: in expansion of macro 'dynamic_dev_dbg'
dynamic_dev_dbg(dev, format, ##__VA_ARGS__); \
drivers/dma/qcom/hidma.c:391:2: note: in expansion of macro 'dev_dbg'

vim +/dev_dbg +391 drivers/dma/qcom/hidma.c

376 mchan->allocated = 0;
377 spin_unlock_irqrestore(&mchan->lock, irqflags);
378 dev_dbg(mdma->, "freed channel for %u\n", mchan->dma_sig);
379 }
382 static struct dma_async_tx_descriptor *
383 hidma_prep_dma_memcpy(struct dma_chan *dmach, dma_addr_t dma_dest,
384 dma_addr_t dma_src, size_t len, unsigned long flags)
385 {
386 struct hidma_chan *mchan = to_hidma_chan(dmach);
387 struct hidma_desc *mdesc = NULL;
388 struct hidma_dev *mdma = mchan->dmadev;
389 unsigned long irqflags;
> 391 dev_dbg(mdma->,
392 "memcpy: chan:%p dest:%pad src:%pad len:%zu\n", mchan,
393 &dma_dest, &dma_src, len);

What am I missing?

len is size_t. This page says use %zu for size_t.

395 /* Get free descriptor */
396 spin_lock_irqsave(&mchan->lock, irqflags);
397 if (!list_empty(&mchan->free)) {
398 mdesc = list_first_entry(&mchan->free, struct hidma_desc,
399 node);

0-DAY kernel test infrastructure Open Source Technology Center Intel Corporation

Sinan Kaya
Qualcomm Technologies, Inc. on behalf of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at