3.16.81-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Chuanxiao Dong <chuanxiao.dong@xxxxxxxxx> commit e5905ff1281f0a0f5c9863c430ac1ed5faaf5707 upstream. Clock frequency values written to an mmc host should not be less than the minimum clock frequency which the mmc host supports. Signed-off-by: Yuan Juntao <juntaox.yuan@xxxxxxxxx> Signed-off-by: Pawel Wodkowski <pawelx.wodkowski@xxxxxxxxx> Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx> Cc: Arnd Bergmann <arnd@xxxxxxxx> Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx> --- drivers/mmc/core/debugfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/mmc/core/debugfs.c +++ b/drivers/mmc/core/debugfs.c @@ -195,7 +195,7 @@ static int mmc_clock_opt_set(void *data, 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);
