Add SPDX license header and use correct pr_info/err. These warnings are reported by checkpatch. This makes the style clean. WARNING: Missing or malformed SPDX-License-Identifier tag in line 1 +#include <linux/device.h> WARNING: printk() should include KERN_<LEVEL> facility level + printk("dmapool test: size:%-4zu align:%-4zu blocks:%-4d time:%llu\n", [...] Signed-off-by: Pintu Kumar <quic_pintu@xxxxxxxxxxx> --- mm/dmapool_test.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/mm/dmapool_test.c b/mm/dmapool_test.c index 54b1fd1ccfbb..99269e37ca59 100644 --- a/mm/dmapool_test.c +++ b/mm/dmapool_test.c @@ -1,3 +1,5 @@ +// SPDX-License-Identifier: GPL-2.0-only + #include <linux/device.h> #include <linux/dma-map-ops.h> #include <linux/dma-mapping.h> @@ -87,7 +89,7 @@ static int dmapool_test_block(const struct dmapool_parms *parms) } end_time = ktime_get(); - printk("dmapool test: size:%-4zu align:%-4zu blocks:%-4d time:%llu\n", + pr_info("dmapool test: size:%-4zu align:%-4zu blocks:%-4d time:%llu\n", parms->size, parms->align, blocks, ktime_us_delta(end_time, start_time)); @@ -112,7 +114,7 @@ static int dmapool_checks(void) ret = device_register(&test_dev); if (ret) { - printk("%s: register failed:%d\n", __func__, ret); + pr_err("%s: register failed:%d\n", __func__, ret); goto put_device; } @@ -121,7 +123,7 @@ static int dmapool_checks(void) test_dev.dma_mask = &dma_mask; ret = dma_set_mask_and_coherent(&test_dev, DMA_BIT_MASK(64)); if (ret) { - printk("%s: mask failed:%d\n", __func__, ret); + pr_err("%s: mask failed:%d\n", __func__, ret); goto del_device; } -- 2.17.1