* [PATCH] char: hpet: fix a missing check of ioremap
@ 2019-03-09 3:50 Kangjie Lu
0 siblings, 0 replies; only message in thread
From: Kangjie Lu @ 2019-03-09 3:50 UTC (permalink / raw)
To: kjlu
Cc: pakki001, Clemens Ladisch, Arnd Bergmann, Greg Kroah-Hartman,
linux-kernel
Check if ioremap fails, and if so, return AE_ERROR.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
---
drivers/char/hpet.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index d0ad85900b79..3a1e6b3ccd10 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -973,6 +973,8 @@ static acpi_status hpet_resources(struct acpi_resource *res, void *data)
if (ACPI_SUCCESS(status)) {
hdp->hd_phys_address = addr.address.minimum;
hdp->hd_address = ioremap(addr.address.minimum, addr.address.address_length);
+ if (!hdp->hd_address)
+ return AE_ERROR;
if (hpet_is_known(hdp)) {
iounmap(hdp->hd_address);
--
2.17.1
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2019-03-09 3:50 [PATCH] char: hpet: fix a missing check of ioremap Kangjie Lu
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