From 16a1258af5d8e1bd58e20fc70069f9dd91cc5b34 Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Tue, 6 Jun 2017 15:24:53 +0300 Subject: [PATCH] thunderbolt: Use const buffer pointer in write operations These functions should not (and do not) modify the argument in any way so make it const. Signed-off-by: Mika Westerberg Reviewed-by: Yehezkel Bernat Reviewed-by: Michael Jamet Reviewed-by: Andy Shevchenko Reviewed-by: Greg Kroah-Hartman Signed-off-by: Andreas Noever Signed-off-by: Greg Kroah-Hartman --- drivers/thunderbolt/ctl.c | 8 ++++---- drivers/thunderbolt/ctl.h | 4 ++-- drivers/thunderbolt/tb.h | 2 +- 3 files changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/thunderbolt/ctl.c b/drivers/thunderbolt/ctl.c index 1146ff4210a9..1031d97407a8 100644 --- a/drivers/thunderbolt/ctl.c +++ b/drivers/thunderbolt/ctl.c @@ -273,7 +273,7 @@ static void tb_cfg_print_error(struct tb_ctl *ctl, } } -static void cpu_to_be32_array(__be32 *dst, u32 *src, size_t len) +static void cpu_to_be32_array(__be32 *dst, const u32 *src, size_t len) { int i; for (i = 0; i < len; i++) @@ -333,7 +333,7 @@ static void tb_ctl_tx_callback(struct tb_ring *ring, struct ring_frame *frame, * * Return: Returns 0 on success or an error code on failure. */ -static int tb_ctl_tx(struct tb_ctl *ctl, void *data, size_t len, +static int tb_ctl_tx(struct tb_ctl *ctl, const void *data, size_t len, enum tb_cfg_pkg_type type) { int res; @@ -650,7 +650,7 @@ struct tb_cfg_result tb_cfg_read_raw(struct tb_ctl *ctl, void *buffer, * * Offset and length are in dwords. */ -struct tb_cfg_result tb_cfg_write_raw(struct tb_ctl *ctl, void *buffer, +struct tb_cfg_result tb_cfg_write_raw(struct tb_ctl *ctl, const void *buffer, u64 route, u32 port, enum tb_cfg_space space, u32 offset, u32 length, int timeout_msec) { @@ -695,7 +695,7 @@ int tb_cfg_read(struct tb_ctl *ctl, void *buffer, u64 route, u32 port, return res.err; } -int tb_cfg_write(struct tb_ctl *ctl, void *buffer, u64 route, u32 port, +int tb_cfg_write(struct tb_ctl *ctl, const void *buffer, u64 route, u32 port, enum tb_cfg_space space, u32 offset, u32 length) { struct tb_cfg_result res = tb_cfg_write_raw(ctl, buffer, route, port, diff --git a/drivers/thunderbolt/ctl.h b/drivers/thunderbolt/ctl.h index ba87d6e731dd..83ae54947082 100644 --- a/drivers/thunderbolt/ctl.h +++ b/drivers/thunderbolt/ctl.h @@ -61,13 +61,13 @@ struct tb_cfg_result tb_cfg_read_raw(struct tb_ctl *ctl, void *buffer, u64 route, u32 port, enum tb_cfg_space space, u32 offset, u32 length, int timeout_msec); -struct tb_cfg_result tb_cfg_write_raw(struct tb_ctl *ctl, void *buffer, +struct tb_cfg_result tb_cfg_write_raw(struct tb_ctl *ctl, const void *buffer, u64 route, u32 port, enum tb_cfg_space space, u32 offset, u32 length, int timeout_msec); int tb_cfg_read(struct tb_ctl *ctl, void *buffer, u64 route, u32 port, enum tb_cfg_space space, u32 offset, u32 length); -int tb_cfg_write(struct tb_ctl *ctl, void *buffer, u64 route, u32 port, +int tb_cfg_write(struct tb_ctl *ctl, const void *buffer, u64 route, u32 port, enum tb_cfg_space space, u32 offset, u32 length); int tb_cfg_get_upstream_port(struct tb_ctl *ctl, u64 route); diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index 61d57ba64035..ba2b85750335 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -173,7 +173,7 @@ static inline int tb_port_read(struct tb_port *port, void *buffer, length); } -static inline int tb_port_write(struct tb_port *port, void *buffer, +static inline int tb_port_write(struct tb_port *port, const void *buffer, enum tb_cfg_space space, u32 offset, u32 length) { return tb_cfg_write(port->sw->tb->ctl, -- 2.20.1