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thunderbolt: Use const buffer pointer in write operations

Browse source 
These functions should not (and do not) modify the argument in any way
so make it const.

Signed-off-by: Mika Westerberg <[email protected]>
Reviewed-by: Yehezkel Bernat <[email protected]>
Reviewed-by: Michael Jamet <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Reviewed-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Andreas Noever <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Mika Westerberg 2017-06-06 15:24:53 +03:00 • committed by Greg Kroah-Hartman
commit 16a1258af5
3 changed files with 7 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

8
drivers/thunderbolt/ctl.c
View file

@ -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,

4
drivers/thunderbolt/ctl.h
View file

@ -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);

2
drivers/thunderbolt/tb.h
View file

@ -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,