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| author |   Meng Tang <tangmeng@uniontech.com> | 2022-03-15 15:48:51 +0800 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2022-03-16 19:17:49 -0700 |
| commit | a8df216630fedadc4e8cc086f0e2e612f9c3d1f4 (patch) | |
| tree | 1c1f4320f9044fb7bcd3b3cfa863bcde8461b924 /drivers/net/hamradio | |
| parent | bareudp: use ipv6_mod_enabled to check if IPv6 enabled (diff) | |
| download | linux-dev-a8df216630fedadc4e8cc086f0e2e612f9c3d1f4.tar.xz linux-dev-a8df216630fedadc4e8cc086f0e2e612f9c3d1f4.zip | |
hamradio: Fix wrong assignment of 'bbc->cfg.loopback'
In file hamradio/baycom_epp.c, the baycom_setmode interface, there
is a problem with improper use of strstr.
Suppose that when modestr="noloopback", both conditions which are
'strstr(modestr,"noloopback")' and 'strstr(modestr,"loopback")'
will be true(not NULL), this lead the bc->cfg.loopback variable
will be first assigned to 0, and then reassigned to 1.
This will cause 'bc->cfg.loopback = 0' will never take effect. That
obviously violates the logic of the code, so adjust the order of
their execution to solve the problem.
Signed-off-by: Meng Tang <tangmeng@uniontech.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20220315074851.6456-1-tangmeng@uniontech.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/hamradio')
| -rw-r--r-- | drivers/net/hamradio/baycom_epp.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/hamradio/baycom_epp.c b/drivers/net/hamradio/baycom_epp.c index a03d0b474641..3e69079ed694 100644 --- a/drivers/net/hamradio/baycom_epp.c +++ b/drivers/net/hamradio/baycom_epp.c @@ -982,10 +982,10 @@ static int baycom_setmode(struct baycom_state *bc, const char *modestr) bc->cfg.extmodem = 0; if (strstr(modestr,"extmodem")) bc->cfg.extmodem = 1; - if (strstr(modestr,"noloopback")) - bc->cfg.loopback = 0; if (strstr(modestr,"loopback")) bc->cfg.loopback = 1; + if (strstr(modestr, "noloopback")) + bc->cfg.loopback = 0; if ((cp = strstr(modestr,"fclk="))) { bc->cfg.fclk = simple_strtoul(cp+5, NULL, 0); if (bc->cfg.fclk < 1000000) |