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| author | Kangjie Lu <kjlu@umn.edu> | 2019-03-08 21:50:24 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-03-28 02:15:51 +0900 |
| commit | 13bd14a41ce3105d5b1f3cd8b4d1e249d17b6d9b (patch) | |
| tree | dd160bbc57183d3b001cea70d31726ed2f9fffc6 /drivers/char/hpet.c | |
| parent | d8fb3fafa220035a8fc6af9822ab6f591ca83a57 (diff) | |
| download | linux-13bd14a41ce3105d5b1f3cd8b4d1e249d17b6d9b.tar.gz linux-13bd14a41ce3105d5b1f3cd8b4d1e249d17b6d9b.tar.bz2 linux-13bd14a41ce3105d5b1f3cd8b4d1e249d17b6d9b.zip | |
char: hpet: fix a missing check of ioremap
Check if ioremap fails, and if so, return AE_ERROR.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/char/hpet.c')
| -rw-r--r-- | drivers/char/hpet.c | 2 |
1 files changed, 2 insertions, 0 deletions
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); |