[U-Boot] [UBOOT][PATCH 2/2] driver: mtd: sf_ops: claim bus while doing memcpy

[Sourav Poddar]

claim spi bus while doing memory copy, this will set up
the spi controller device control register before doing
a memory read.

Signed-off-by: Sourav Poddar <sourav.poddar at ti.com>
Tested-by: Yebio Mesfin <ymesfin at ti.com>
---
 drivers/mtd/spi/sf_ops.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/drivers/mtd/spi/sf_ops.c b/drivers/mtd/spi/sf_ops.c
index 108665f..e316a69 100644
--- a/drivers/mtd/spi/sf_ops.c
+++ b/drivers/mtd/spi/sf_ops.c
@@ -273,9 +273,15 @@ int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset,
 
 	/* Handle memory-mapped SPI */
 	if (flash->memory_map) {
+		ret = spi_claim_bus(flash->spi);
+		if (ret) {
+			debug("SF: unable to claim SPI bus\n");
+			return ret;
+		}
 		spi_xfer(flash->spi, 0, NULL, NULL, SPI_XFER_MMAP);
 		memcpy(data, flash->memory_map + offset, len);
 		spi_xfer(flash->spi, 0, NULL, NULL, SPI_XFER_MMAP_END);
+		spi_release_bus(flash->spi);
 		return 0;
 	}
 
-- 
1.7.1