diff options
| author | Pavel Machek <pavel@ucw.cz> | 2019-04-16 09:58:45 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2019-04-29 12:37:11 +0200 |
| commit | 42c38d4a1bc41e78dedbf73b0fb35e44007789bb (patch) | |
| tree | 340bfe840413ec655d0c4ccf509f7a587ab0531f /drivers/mmc/core/host.c | |
| parent | 4c94cb651f478e0b53f10b77033b91a5c7702740 (diff) | |
| download | linux-42c38d4a1bc41e78dedbf73b0fb35e44007789bb.tar.bz2 | |
mmc: core: Fix warning and undefined behavior in mmc voltage handling
!voltage_ranges is tested for too late, allowing warning and undefined
behavior. Fix that.
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/core/host.c')
| -rw-r--r-- | drivers/mmc/core/host.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index 3a4402a79904..b3fa9c916142 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -363,11 +363,11 @@ int mmc_of_parse_voltage(struct device_node *np, u32 *mask) int num_ranges, i; voltage_ranges = of_get_property(np, "voltage-ranges", &num_ranges); - num_ranges = num_ranges / sizeof(*voltage_ranges) / 2; if (!voltage_ranges) { pr_debug("%pOF: voltage-ranges unspecified\n", np); return 0; } + num_ranges = num_ranges / sizeof(*voltage_ranges) / 2; if (!num_ranges) { pr_err("%pOF: voltage-ranges empty\n", np); return -EINVAL; |