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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2020-09-18 17:27:56 +0300 |
|---|---|---|
| committer | Corey Minyard <cminyard@mvista.com> | 2020-09-18 16:34:52 -0500 |
| commit | c011410d9145695c460567fa5ba1ade6a7b16f06 (patch) | |
| tree | bd375d517b90c44e6d43f5430be3f9f601011f80 /drivers/char | |
| parent | 42d8a346c5c06689f4f25aecfa287a5aca501a55 (diff) | |
| download | linux-stable-c011410d9145695c460567fa5ba1ade6a7b16f06.tar.gz linux-stable-c011410d9145695c460567fa5ba1ade6a7b16f06.tar.bz2 linux-stable-c011410d9145695c460567fa5ba1ade6a7b16f06.zip | |
ipmi: msghandler: Fix a signedness bug
The type for the completion codes should be unsigned char instead of
char. If it is declared as a normal char then the conditions in
__get_device_id() are impossible because the IPMI_DEVICE_IN_FW_UPDATE_ERR
error codes are higher than 127.
drivers/char/ipmi/ipmi_msghandler.c:2449 __get_device_id()
warn: impossible condition '(bmc->cc == 209) => ((-128)-127 == 209)'
Fixes: f8910ffa81b0 ("ipmi:msghandler: retry to get device id on an error")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Message-Id: <20200918142756.GB909725@mwanda>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/ipmi/ipmi_msghandler.c | 2 | ||||
| -rw-r--r-- | drivers/char/ipmi/ipmi_si_intf.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c index 555c3b1e4926..8774a3b8ff95 100644 --- a/drivers/char/ipmi/ipmi_msghandler.c +++ b/drivers/char/ipmi/ipmi_msghandler.c @@ -319,7 +319,7 @@ struct bmc_device { int dyn_guid_set; struct kref usecount; struct work_struct remove_work; - char cc; /* completion code */ + unsigned char cc; /* completion code */ }; #define to_bmc_device(x) container_of((x), struct bmc_device, pdev.dev) diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c index 164f85007080..0b3dbc7e39fd 100644 --- a/drivers/char/ipmi/ipmi_si_intf.c +++ b/drivers/char/ipmi/ipmi_si_intf.c @@ -1344,7 +1344,7 @@ retry: resp + 2, resp_len - 2, &smi_info->device_id); if (rv) { /* record completion code */ - char cc = *(resp + 2); + unsigned char cc = *(resp + 2); if ((cc == IPMI_DEVICE_IN_FW_UPDATE_ERR || cc == IPMI_DEVICE_IN_INIT_ERR |