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Commit aea95548 authored by channing's avatar channing Committed by Greg Kroah-Hartman
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serial:ifx6x60: Remove memset for SPI frame 



There is no need to memset 0 to SPI frame memory before preparing
transfer frame bits, because SPI frame header are encoded with valid
data size, so don't need to worry about adopting dirty bits, more,
memset zero for each SPI frame may impact the spi throughput efficiency.

Signed-off-by: default avatarChen Jun <jun.d.chen@intel.com>
Signed-off-by: default avatarchanning <chao.bi@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 666b7793

drivers/tty/serial/ifx6x60.c

+0 −1
Original line number Diff line number Diff line
@@ -481,7 +481,6 @@ static int ifx_spi_prepare_tx_buffer(struct ifx_spi_device *ifx_dev) 
	unsigned char *tx_buffer;



	tx_buffer = ifx_dev->tx_buffer;

	memset(tx_buffer, 0, IFX_SPI_TRANSFER_SIZE);



	/* make room for required SPI header */

	tx_buffer += IFX_SPI_HEADER_OVERHEAD;