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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2018-08-27 12:22:34 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-11-20 20:45:25 +0300 |
| commit | 5a408693b414afcea1e0c31ed4b2e36fe3a64458 (patch) | |
| tree | 6a173540cde42ad0a319f86c9aae880b55018508 /drivers/rtc/rtc-sysfs.c | |
| parent | a01d6a3204404f9fee97af8c1af4783790f3fd78 (diff) | |
| download | linux-5a408693b414afcea1e0c31ed4b2e36fe3a64458.tar.xz | |
rtc: sysfs: fix NULL check in rtc_add_groups()
[ Upstream commit 777d8ae56da18fb6440acd941edb3597c1b02bf0 ]
devm_kcalloc() returns NULL, it never returns error pointers. In the
current code we would return PTR_ERR(NULL) which is success, instead of
returning the -ENOMEM error code.
Fixes: a0a1a1ba3032 ("rtc: sysfs: facilitate attribute add to rtc device")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/rtc/rtc-sysfs.c')
| -rw-r--r-- | drivers/rtc/rtc-sysfs.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/rtc/rtc-sysfs.c b/drivers/rtc/rtc-sysfs.c index f1ff30ade534..9746c32eee2e 100644 --- a/drivers/rtc/rtc-sysfs.c +++ b/drivers/rtc/rtc-sysfs.c @@ -338,8 +338,8 @@ int rtc_add_groups(struct rtc_device *rtc, const struct attribute_group **grps) new_cnt = old_cnt + add_cnt + 1; groups = devm_kcalloc(&rtc->dev, new_cnt, sizeof(*groups), GFP_KERNEL); - if (IS_ERR_OR_NULL(groups)) - return PTR_ERR(groups); + if (!groups) + return -ENOMEM; memcpy(groups, rtc->dev.groups, old_cnt * sizeof(*groups)); memcpy(groups + old_cnt, grps, add_cnt * sizeof(*groups)); groups[old_cnt + add_cnt] = NULL; |