On 07/19/2017 05:17 PM, Abhishek Sahu wrote:
The memset in clear_read_regs is overhead. All the register data
will be filled by DMA during NAND operation so making these
register variables zero is not required.

Yeah, that's a good point.

Reviewed-by: Archit Taneja <arch...@codeaurora.org>


Signed-off-by: Abhishek Sahu <abs...@codeaurora.org>
---
  drivers/mtd/nand/qcom_nandc.c | 2 --
  1 file changed, 2 deletions(-)

diff --git a/drivers/mtd/nand/qcom_nandc.c b/drivers/mtd/nand/qcom_nandc.c
index 5b71478..7ecd0f8 100644
--- a/drivers/mtd/nand/qcom_nandc.c
+++ b/drivers/mtd/nand/qcom_nandc.c
@@ -826,8 +826,6 @@ static void free_descs(struct qcom_nand_controller *nandc)
  static void clear_read_regs(struct qcom_nand_controller *nandc)
  {
        nandc->reg_read_pos = 0;
-       memset(nandc->reg_read_buf, 0,
-              MAX_REG_RD * sizeof(*nandc->reg_read_buf));
  }
static void pre_command(struct qcom_nand_host *host, int command)


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