From aea95548c0dedea31a9dbb78eae762b220553921 Mon Sep 17 00:00:00 2001 From: channing Date: Tue, 22 Jan 2013 16:08:46 +0800 Subject: [PATCH] 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: Chen Jun Signed-off-by: channing Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/ifx6x60.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/tty/serial/ifx6x60.c b/drivers/tty/serial/ifx6x60.c index 6a6668bbb330..f083641bf475 100644 --- a/drivers/tty/serial/ifx6x60.c +++ b/drivers/tty/serial/ifx6x60.c @@ -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;