mmc: debugfs: Add a restriction to mmc debugfs clock setting

[platform/kernel/linux-rpi.git] / drivers / mmc / core / debugfs.c

diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c
index 65cc0ac..9382a57 100644 (file)
--- a/drivers/mmc/core/debugfs.c
+++ b/drivers/mmc/core/debugfs.c
@@ -220,7 +220,7 @@ static int mmc_clock_opt_set(void *data, u64 val)
        struct mmc_host *host = data;
 
        /* We need this check due to input value is u64 */
-       if (val > host->f_max)
+       if (val != 0 && (val > host->f_max || val < host->f_min))
                return -EINVAL;
 
        mmc_claim_host(host);