4.15-stable review patch. If anyone has any objections, please let me know.
------------------ From: Phil Elwell <[email protected]> commit 118032be389009b07ecb5a03ffe219a89d421def upstream. The optional DT parameter max-frequency could init the max bus frequency. So take care of this, before setting the max bus frequency. Fixes: 660fc733bd74 ("mmc: bcm2835: Add new driver for the sdhost controller.") Signed-off-by: Phil Elwell <[email protected]> Signed-off-by: Stefan Wahren <[email protected]> Cc: <[email protected]> # 4.12+ Signed-off-by: Ulf Hansson <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/mmc/host/bcm2835.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/mmc/host/bcm2835.c +++ b/drivers/mmc/host/bcm2835.c @@ -1265,7 +1265,8 @@ static int bcm2835_add_host(struct bcm28 char pio_limit_string[20]; int ret; - mmc->f_max = host->max_clk; + if (!mmc->f_max || mmc->f_max > host->max_clk) + mmc->f_max = host->max_clk; mmc->f_min = host->max_clk / SDCDIV_MAX_CDIV; mmc->max_busy_timeout = ~0 / (mmc->f_max / 1000);
