The function wakeup_source_register() in mmc_alloc_host() can fail, so
its return value should be checked.
Fixes: b52fb259dff8 ("mmc: core: Always allow the card detect uevent to be consumed")
Reported-by: TOTE Robot <oslab@xxxxxxxxxxxxxxx>
Signed-off-by: Jia-Ju Bai <baijiaju1990@xxxxxxxxx>
---
drivers/mmc/core/host.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index cf140f4ec864..4f1a6db10ec5 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -550,6 +550,10 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
dev_set_name(&host->class_dev, "mmc%d", host->index);
host->ws = wakeup_source_register(NULL, dev_name(&host->class_dev));
+ if (!host->ws) {
+ kfree(host);
+ return NULL;
+ }
host->parent = dev;
host->class_dev.parent = dev;
--
2.17.1
