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thunderbolt: Make priority unsigned in struct tb_path

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Clang warns:

drivers/thunderbolt/tunnel.c:504:17: warning: implicit truncation from
'int' to bit-field changes value from 5 to -3
[-Wbitfield-constant-conversion]
        path->priority = 5;
                       ^ ~
1 warning generated.

The priority member in struct tb_path is only ever assigned a positive
number:

$ rg -n priority drivers/thunderbolt/path.c
drivers/thunderbolt/tunnel.c:99:        path->priority = 3;
drivers/thunderbolt/tunnel.c:308:       path->priority = 2;
drivers/thunderbolt/tunnel.c:323:       path->priority = 1;
drivers/thunderbolt/tunnel.c:504:       path->priority = 5;

Furthermore, that value is only assigned to an unsigned integer in
tb_path_activate (the priority member in struct tb_regs_hop).

Fixes: 44242d6c9703 ("thunderbolt: Add support for DMA tunnels")
Link: https://github.com/ClangBuiltLinux/linux/issues/454
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Nathan Chancellor 2019-04-24 11:34:13 -07:00 committed by Mika Westerberg
parent c4630d6ae6
commit 37209783c7
1 changed files with 1 additions and 1 deletions
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2
drivers/thunderbolt/tb.h
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@ -225,7 +225,7 @@ struct tb_path {
enum tb_path_port ingress_fc_enable;
enum tb_path_port egress_fc_enable;
int priority:3;
unsigned int priority:3;
int weight:4;
bool drop_packages;
bool activated;