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authorCorey Minyard <cminyard@mvista.com>2017-06-30 07:18:08 -0500
committerCorey Minyard <cminyard@mvista.com>2017-06-30 07:18:08 -0500
commit4495ec6d770e1bca7a04e93ac453ab6720c56c5d (patch)
treeac17ad2bded1808cc9a5eed5680b5266b8f7d54d /drivers/char
parent1e7a75f74a193f92eb9e5da20d1fb1b388241631 (diff)
downloadlinux-4495ec6d770e1bca7a04e93ac453ab6720c56c5d.tar.bz2
ipmi:ssif: Add missing unlock in error branch
When getting flags, a response to a different message would result in a deadlock because of a missing unlock. Add that unlock and a comment. Found by static analysis. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: stable@vger.kernel.org # 3.19 Signed-off-by: Corey Minyard <cminyard@mvista.com>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/ipmi/ipmi_ssif.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/char/ipmi/ipmi_ssif.c b/drivers/char/ipmi/ipmi_ssif.c
index 971ecda33657..0aea3bcb6158 100644
--- a/drivers/char/ipmi/ipmi_ssif.c
+++ b/drivers/char/ipmi/ipmi_ssif.c
@@ -766,6 +766,11 @@ static void msg_done_handler(struct ssif_info *ssif_info, int result,
result, len, data[2]);
} else if (data[0] != (IPMI_NETFN_APP_REQUEST | 1) << 2
|| data[1] != IPMI_GET_MSG_FLAGS_CMD) {
+ /*
+ * Don't abort here, maybe it was a queued
+ * response to a previous command.
+ */
+ ipmi_ssif_unlock_cond(ssif_info, flags);
pr_warn(PFX "Invalid response getting flags: %x %x\n",
data[0], data[1]);
} else {