[U-Boot] [PATCH v2 14/16] sf: Use spi_flash_read_common() in write status poll

[Jagannadha Sutradharudu Teki]

Instead of using spi_xfer for SPI_XFER_BEGIN and SPI_XFER_END
separatley use common read call spi_flash_read_common() which
does the same.

Signed-off-by: Jagannadha Sutradharudu Teki <jaganna at xilinx.com>
---
Changes for v2:
        - none

 drivers/mtd/spi/spi_flash.c | 17 +++++------------
 1 file changed, 5 insertions(+), 12 deletions(-)

diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c
index 821aa2e..765d4bc 100644
--- a/drivers/mtd/spi/spi_flash.c
+++ b/drivers/mtd/spi/spi_flash.c
@@ -193,32 +193,25 @@ int spi_flash_cmd_read_fast(struct spi_flash *flash, u32 offset,
 int spi_flash_cmd_poll_bit(struct spi_flash *flash, unsigned long timeout,
 			   u8 cmd, u8 poll_bit)
 {
-	struct spi_slave *spi = flash->spi;
 	unsigned long timebase;
 	int ret;
 	u8 status;
 
-	ret = spi_xfer(spi, 8, &cmd, NULL, SPI_XFER_BEGIN);
-	if (ret) {
-		debug("SF: Failed to send command %02x: %d\n", cmd, ret);
-		return ret;
-	}
-
 	timebase = get_timer(0);
 	do {
 		WATCHDOG_RESET();
 
-		ret = spi_xfer(spi, 8, NULL, &status, 0);
-		if (ret)
-			return -1;
+		ret = spi_flash_read_common(flash, &cmd, 1, &status, 1);
+		if (ret < 0) {
+			debug("SF: fail to read read status register\n");
+			return ret;
+		}
 
 		if ((status & poll_bit) == 0)
 			break;
 
 	} while (get_timer(timebase) < timeout);
 
-	spi_xfer(spi, 0, NULL, NULL, SPI_XFER_END);
-
 	if ((status & poll_bit) == 0)
 		return 0;
 
-- 
1.8.3