From c0616454cbdc06b98d83a732055822dd1fa135c7 Mon Sep 17 00:00:00 2001 From: David Kershner Date: Wed, 30 Aug 2017 13:36:15 -0400 Subject: [PATCH] staging: unisys: visorbus: Convert macros to functions. Several macros in visorchannel.c were doing complex arithmetic, converted them to functions so that valid type checking could be done. Signed-off-by: David Kershner Reviewed-by: Tim Sell Signed-off-by: Greg Kroah-Hartman --- .../staging/unisys/visorbus/visorchannel.c | 25 +++++++++++-------- 1 file changed, 15 insertions(+), 10 deletions(-) diff --git a/drivers/staging/unisys/visorbus/visorchannel.c b/drivers/staging/unisys/visorbus/visorchannel.c index 396921700005..81e428a9802e 100644 --- a/drivers/staging/unisys/visorbus/visorchannel.c +++ b/drivers/staging/unisys/visorbus/visorchannel.c @@ -155,17 +155,22 @@ void *visorchannel_get_header(struct visorchannel *channel) * Return offset of a specific SIGNAL_QUEUE_HEADER from the beginning of a * channel header */ -#define SIG_QUEUE_OFFSET(chan_hdr, q) \ - ((chan_hdr)->ch_space_offset + \ - ((q) * sizeof(struct signal_queue_header))) +int sig_queue_offset(struct channel_header *chan_hdr, int q) +{ + return ((chan_hdr)->ch_space_offset + + ((q) * sizeof(struct signal_queue_header))); +} /* * Return offset of a specific queue entry (data) from the beginning of a * channel header */ -#define SIG_DATA_OFFSET(chan_hdr, q, sig_hdr, slot) \ - (SIG_QUEUE_OFFSET(chan_hdr, q) + (sig_hdr)->sig_base_offset + \ - ((slot) * (sig_hdr)->signal_size)) +int sig_data_offset(struct channel_header *chan_hdr, int q, + struct signal_queue_header *sig_hdr, int slot) +{ + return (sig_queue_offset(chan_hdr, q) + sig_hdr->sig_base_offset + + (slot * sig_hdr->signal_size)); +} /* * Write the contents of a specific field within a SIGNAL_QUEUE_HEADER back @@ -173,7 +178,7 @@ void *visorchannel_get_header(struct visorchannel *channel) */ #define SIG_WRITE_FIELD(channel, queue, sig_hdr, FIELD) \ visorchannel_write(channel, \ - SIG_QUEUE_OFFSET(&channel->chan_hdr, queue) + \ + sig_queue_offset(&channel->chan_hdr, queue) + \ offsetof(struct signal_queue_header, FIELD), \ &((sig_hdr)->FIELD), \ sizeof((sig_hdr)->FIELD)) @@ -186,7 +191,7 @@ static int sig_read_header(struct visorchannel *channel, u32 queue, /* Read the appropriate SIGNAL_QUEUE_HEADER into local memory. */ return visorchannel_read(channel, - SIG_QUEUE_OFFSET(&channel->chan_hdr, queue), + sig_queue_offset(&channel->chan_hdr, queue), sig_hdr, sizeof(struct signal_queue_header)); } @@ -194,7 +199,7 @@ static int sig_read_data(struct visorchannel *channel, u32 queue, struct signal_queue_header *sig_hdr, u32 slot, void *data) { - int signal_data_offset = SIG_DATA_OFFSET(&channel->chan_hdr, queue, + int signal_data_offset = sig_data_offset(&channel->chan_hdr, queue, sig_hdr, slot); return visorchannel_read(channel, signal_data_offset, @@ -205,7 +210,7 @@ static int sig_write_data(struct visorchannel *channel, u32 queue, struct signal_queue_header *sig_hdr, u32 slot, void *data) { - int signal_data_offset = SIG_DATA_OFFSET(&channel->chan_hdr, queue, + int signal_data_offset = sig_data_offset(&channel->chan_hdr, queue, sig_hdr, slot); return visorchannel_write(channel, signal_data_offset, -- 2.20.1