We should use NULL to compare with pointer-typed value rather than 0. The issue is detected with the help of Coccinelle. Signed-off-by: zhong jiang <zhongjiang@xxxxxxxxxx> --- drivers/ide/pmac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/ide/pmac.c b/drivers/ide/pmac.c index c5b902b..ca36a97 100644 --- a/drivers/ide/pmac.c +++ b/drivers/ide/pmac.c @@ -1682,7 +1682,7 @@ static int pmac_ide_init_dma(ide_hwif_t *hwif, const struct ide_port_info *d) /* We won't need pci_dev if we switch to generic consistent * DMA routines ... */ - if (dev == NULL || pmif->dma_regs == 0) + if (!dev || !pmif->dma_regs) return -ENODEV; /* * Allocate space for the DBDMA commands. -- 1.7.12.4
