Messages in this thread Patch in this message | | | From | Kangjie Lu <> | Subject | [PATCH] char: hpet: fix a missing check of ioremap | Date | Fri, 8 Mar 2019 21:50:24 -0600 |
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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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