spi: spi_flash: Store and use spi flags received

Store and use spi flags as it will be cleared after
write enable command and it need to be available for
following write command.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c
index 23bda15a89b088fecd608698a5a18a84b65dcd7a..eee7a7fa4eb5c4479befcfaa0d6173f556838cee 100644 (file)
--- a/drivers/mtd/spi/spi_flash.c
+++ b/drivers/mtd/spi/spi_flash.c
@@ -376,6 +376,9 @@ int spi_flash_write_common(struct spi_flash *flash, const u8 *cmd,
        struct spi_slave *spi = flash->spi;
        unsigned long timeout = SPI_FLASH_PROG_TIMEOUT;
        int ret;
+#ifdef CONFIG_SPI_GENERIC
+       u32 flags = 0;
+#endif
 
        if (buf == NULL)
                timeout = SPI_FLASH_PAGE_ERASE_TIMEOUT;
@@ -386,12 +389,20 @@ int spi_flash_write_common(struct spi_flash *flash, const u8 *cmd,
                return ret;
        }
 
+#ifdef CONFIG_SPI_GENERIC
+       if (flash->dual_flash == SF_DUAL_PARALLEL_FLASH)
+               flags = flash->spi->flags;
+#endif
        ret = spi_flash_cmd_write_enable(flash);
        if (ret < 0) {
                debug("SF: enabling write failed\n");
                return ret;
        }
 
+#ifdef CONFIG_SPI_GENERIC
+       if (flash->dual_flash == SF_DUAL_PARALLEL_FLASH)
+               flash->spi->flags = flags;
+#endif
        ret = spi_flash_cmd_write(spi, cmd, cmd_len, buf, buf_len);
        if (ret < 0) {
                debug("SF: write cmd failed\n");