* Afzal Mohammed <afzal@xxxxxx> [120604 00:06]: > +static int omap_prefetch_enable(int cs, int fifo_th, int dma_mode, > + unsigned int u32_count, int is_write, struct omap_nand_info *info) > +{ > + u32 val; > + > + if (fifo_th > PREFETCH_FIFOTHRESHOLD_MAX) { > + pr_err("gpmc: fifo threshold is not supported\n"); > + return -1; > + } else if (!(readl(info->reg.gpmc_prefetch_control))) { > + /* Set the amount of bytes to be prefetched */ > + writel(u32_count, info->reg.gpmc_prefetch_config2); > + > + /* Set dma/mpu mode, the prefetch read / post write and > + * enable the engine. Set which cs is has requested for. > + */ > + val = ((cs << PREFETCH_CONFIG1_CS_SHIFT) | > + PREFETCH_FIFOTHRESHOLD(fifo_th) | > + ENABLE_PREFETCH | > + (dma_mode << DMA_MPU_MODE_SHIFT) | > + (0x1 & is_write)); > + writel(val, info->reg.gpmc_prefetch_config1); > + > + /* Start the prefetch engine */ > + writel(0x1, info->reg.gpmc_prefetch_control); > + } else { > + return -EBUSY; > + } > + > + return 0; > +} You can simplify the above by leaving out the if else stuff by returning early: if (fifo_th > PREFETCH_FIFOTHRESHOLD_MAX) return -1; if (readl(info->reg.gpmc_prefetch_control)) return -EBUSY; /* Set the amount of bytes to be prefetched */ writel(u32_count, info->reg.gpmc_prefetch_config2); ... return 0; Regards, Tony -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html