From: Álvaro Fernández Rojas Date: Tue, 23 Jan 2018 16:14:57 +0000 (+0100) Subject: drivers: spi: consider command bytes when sending transfers X-Git-Tag: v2018.03-rc1~97^2~30 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6c94bd12c4adca45033ef89daafa66fbfc9acd17;p=platform%2Fkernel%2Fu-boot.git drivers: spi: consider command bytes when sending transfers Command bytes are part of the written bytes and they should be taken into account when sending a spi transfer. Signed-off-by: Álvaro Fernández Rojas Reviewed-by: Simon Glass Reviewed-by: Daniel Schwierzeck Reviewed-by: Jagan Teki --- diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c index e40e1c0..294d9f9 100644 --- a/drivers/mtd/spi/spi_flash.c +++ b/drivers/mtd/spi/spi_flash.c @@ -405,7 +405,7 @@ int spi_flash_cmd_write_ops(struct spi_flash *flash, u32 offset, if (spi->max_write_size) chunk_len = min(chunk_len, - (size_t)spi->max_write_size); + spi->max_write_size - sizeof(cmd)); spi_flash_addr(write_addr, cmd); diff --git a/include/spi.h b/include/spi.h index 4787454..5a7df1c 100644 --- a/include/spi.h +++ b/include/spi.h @@ -89,7 +89,7 @@ struct dm_spi_slave_platdata { * @max_read_size: If non-zero, the maximum number of bytes which can * be read at once. * @max_write_size: If non-zero, the maximum number of bytes which can - * be written at once, excluding command bytes. + * be written at once. * @memory_map: Address of read-only SPI flash access. * @flags: Indication of SPI flags. */