From: Eddie James <eaja...@linux.ibm.com> commit ebd4050c6144b38098d8eed34df461e5e3fa82a9 upstream.
When calculating the clock divider, start dividing at 2 instead of 1. The divider is divided by two at the end of the calculation, so starting at 1 may result in a divider of 0, which shouldn't happen. Signed-off-by: Eddie James <eaja...@linux.ibm.com> Reviewed-by: Andrew Jeffery <and...@aj.id.au> Acked-by: Joel Stanley <j...@jms.id.au> Acked-by: Adrian Hunter <adrian.hun...@intel.com> Link: https://lore.kernel.org/r/20200709195706.12741-3-eaja...@linux.ibm.com Cc: sta...@vger.kernel.org # v5.4+ Signed-off-by: Ulf Hansson <ulf.hans...@linaro.org> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- drivers/mmc/host/sdhci-of-aspeed.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/mmc/host/sdhci-of-aspeed.c +++ b/drivers/mmc/host/sdhci-of-aspeed.c @@ -68,7 +68,7 @@ static void aspeed_sdhci_set_clock(struc if (WARN_ON(clock > host->max_clk)) clock = host->max_clk; - for (div = 1; div < 256; div *= 2) { + for (div = 2; div < 256; div *= 2) { if ((parent / div) <= clock) break; }
