/* * netsniff-ng - the packet sniffing beast * Copyright 2009, 2010 Daniel Borkmann. * Subject to the GPL, version 2. */ #ifndef XIO_H #define XIO_H extern int open_or_die(const char *file, int flags); extern int open_or_die_m(const char *file, int flags, mode_t mode); extern void create_or_die(const char *file, mode_t mode); extern int tun_open_or_die(char *name, int type); extern void pipe_or_die(int pipefd[2], int flags); extern ssize_t read_or_die(int fd, void *buf, size_t count); extern ssize_t write_or_die(int fd, const void *buf, size_t count); extern ssize_t read_exact(int fd, void *buf, size_t len, int mayexit); extern ssize_t write_exact(int fd, void *buf, size_t len, int mayexit); extern int secrand(void); extern void to_std_log(FILE **fp); #endif /* XIO_H */ index : net-next.git
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authorHeiner Kallweit <hkallweit1@gmail.com>2016-10-27 21:27:56 +0200
committerMark Brown <broonie@kernel.org>2016-10-28 19:39:47 +0100
commite508cea45bc31de87b35180a9ba5ef9572ffde3f (patch)
tree2dbb4a80450a4693d6eefba97ec05a16469d6b7e
parentdb1b049fad8b12062edffade8272d604b4019eb7 (diff)
spi: fsl-espi: make better use of the RX FIFO
So far an interrupt is triggered whenever there's at least one byte in the RX FIFO. This results in a unnecessarily high number of interrupts. Change this to generate an interrupt if - RX FIFO is half full (except if all bytes to read fit into the RX FIFO anyway) - end of transfer has been reached This way the number of interrupts can be significantly reduced. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat
-rw-r--r--drivers/spi/spi-fsl-espi.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/spi/spi-fsl-espi.c b/drivers/spi/spi-fsl-espi.c