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@xxxxxxxxxx>
---
drivers/char/ipmi/ipmi_msghandler.c | 2 +-
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 @@ static int try_get_dev_id(struct smi_info *smi_info)
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
--
2.28.0
