[AX.25]: Fix signed char bug

On architectures where the char type defaults to unsigned some of the
arithmetic in the AX.25 stack to fail, resulting in some packets being dropped
on receive.

Credits for tracking this down and the original patch to
Bob Brose N0QBJ <linuxhams@n0qbj-11.ampr.org>.

Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>

diff --git a/include/net/ax25.h b/include/net/ax25.h
index 9dbcd9e..30bb4a8 100644 (file)
--- a/include/net/ax25.h
+++ b/include/net/ax25.h
@@ -171,7 +171,7 @@ typedef struct {
        ax25_address            calls[AX25_MAX_DIGIS];
        unsigned char           repeated[AX25_MAX_DIGIS];
        unsigned char           ndigi;
-       char                    lastrepeat;
+       signed char             lastrepeat;
 } ax25_digi;
 
 typedef struct ax25_route {