From: Bin Meng Date: Mon, 11 Sep 2017 09:41:58 +0000 (-0700) Subject: spi-nor: intel-spi: Remove the unnecessary HSFSTS register RW X-Git-Tag: v4.15-rc1~25^2~15^2~18 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=6e995b84ce449758017d1eab5a91865158e3ceee;p=linux.git spi-nor: intel-spi: Remove the unnecessary HSFSTS register RW There is no code that alters the HSFSTS register content in between in intel_spi_write(). Remove the unnecessary RW to save some cycles. Signed-off-by: Bin Meng Acked-by: Mika Westerberg Signed-off-by: Cyrille Pitchen --- diff --git a/drivers/mtd/spi-nor/intel-spi.c b/drivers/mtd/spi-nor/intel-spi.c index 07146ab19cac..91ceef7c9185 100644 --- a/drivers/mtd/spi-nor/intel-spi.c +++ b/drivers/mtd/spi-nor/intel-spi.c @@ -611,7 +611,6 @@ static ssize_t intel_spi_write(struct spi_nor *nor, loff_t to, size_t len, val |= HSFSTS_CTL_AEL | HSFSTS_CTL_FCERR | HSFSTS_CTL_FDONE; val |= (block_size - 1) << HSFSTS_CTL_FDBC_SHIFT; val |= HSFSTS_CTL_FCYCLE_WRITE; - writel(val, ispi->base + HSFSTS_CTL); ret = intel_spi_write_block(ispi, write_buf, block_size); if (ret) { @@ -620,8 +619,8 @@ static ssize_t intel_spi_write(struct spi_nor *nor, loff_t to, size_t len, } /* Start the write now */ - val = readl(ispi->base + HSFSTS_CTL); - writel(val | HSFSTS_CTL_FGO, ispi->base + HSFSTS_CTL); + val |= HSFSTS_CTL_FGO; + writel(val, ispi->base + HSFSTS_CTL); ret = intel_spi_wait_hw_busy(ispi); if (ret) {