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mxser: make xmit ring buffer variables unsigned

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Make the xmit ring buffer pointers and counter (xmit_head, xmit_tail,
xmit_cnt) unsigned. Now, the assumptions for the compiler are clear --
they cannot be negative.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20210618061516.662-20-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2021-06-18 08:14:25 +02:00 committed by Greg Kroah-Hartman
parent a93963e41f
commit 02e431444b
1 changed files with 3 additions and 3 deletions
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6
drivers/tty/mxser.c
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@ -351,9 +351,9 @@ struct mxser_port {
u8 read_status_mask;
u8 ignore_status_mask;
u8 xmit_fifo_size;
int xmit_head;
int xmit_tail;
int xmit_cnt;
unsigned int xmit_head;
unsigned int xmit_tail;
unsigned int xmit_cnt;
int closing;
struct ktermios normal_termios;