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authorOlof Johansson <olof@lixom.net>2019-12-05 10:11:49 -0800
committerOlof Johansson <olof@lixom.net>2019-12-05 10:11:50 -0800
commit3c25ce694a1fbdb5b498fc8a6491074f48b47328 (patch)
tree1243a1b004e7cf01aa9b090aeaa7998593bd188e /drivers
parentMerge tag 'juno-fixes-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes (diff)
parentfirmware: arm_scmi: Avoid double free in error flow (diff)
downloadlinux-dev-3c25ce694a1fbdb5b498fc8a6491074f48b47328.tar.xz
linux-dev-3c25ce694a1fbdb5b498fc8a6491074f48b47328.zip
Merge tag 'scmi-fix-5.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes
ARM SCMI fix for v5.5 Yet another single fix to avoid double freeing in scmi_device_create error path * tag 'scmi-fix-5.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux: firmware: arm_scmi: Avoid double free in error flow firmware: arm_scmi: Fix doorbell ring logic for !CONFIG_64BIT Link: https://lore.kernel.org/r/20191202114559.GB20965@bogus Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/firmware/arm_scmi/bus.c8
-rw-r--r--drivers/firmware/arm_scmi/perf.c2
2 files changed, 5 insertions, 5 deletions
diff --git a/drivers/firmware/arm_scmi/bus.c b/drivers/firmware/arm_scmi/bus.c
index 92f843eaf1e0..7a30952b463d 100644
--- a/drivers/firmware/arm_scmi/bus.c
+++ b/drivers/firmware/arm_scmi/bus.c
@@ -135,8 +135,10 @@ scmi_device_create(struct device_node *np, struct device *parent, int protocol)
return NULL;
id = ida_simple_get(&scmi_bus_id, 1, 0, GFP_KERNEL);
- if (id < 0)
- goto free_mem;
+ if (id < 0) {
+ kfree(scmi_dev);
+ return NULL;
+ }
scmi_dev->id = id;
scmi_dev->protocol_id = protocol;
@@ -154,8 +156,6 @@ scmi_device_create(struct device_node *np, struct device *parent, int protocol)
put_dev:
put_device(&scmi_dev->dev);
ida_simple_remove(&scmi_bus_id, id);
-free_mem:
- kfree(scmi_dev);
return NULL;
}
diff --git a/drivers/firmware/arm_scmi/perf.c b/drivers/firmware/arm_scmi/perf.c
index 4a8012e3cb8c..601af4edad5e 100644
--- a/drivers/firmware/arm_scmi/perf.c
+++ b/drivers/firmware/arm_scmi/perf.c
@@ -323,7 +323,7 @@ static void scmi_perf_fc_ring_db(struct scmi_fc_db_info *db)
if (db->mask)
val = ioread64_hi_lo(db->addr) & db->mask;
- iowrite64_hi_lo(db->set, db->addr);
+ iowrite64_hi_lo(db->set | val, db->addr);
}
#endif
}