clk_round_rate() may return an error. Check it.
Signed-off-by: Jean-Francois Moine <moin...@free.fr>
Acked-by: Maxime Ripard <maxime.rip...@free-electrons.com>
---
This patch was initially sent in a patch series about the MMC new mode,
but it may be applied independently.
---
drivers/mmc/host/sunxi-mmc.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c
index 2ee4c21..ba647b7 100644
--- a/drivers/mmc/host/sunxi-mmc.c
+++ b/drivers/mmc/host/sunxi-mmc.c
@@ -656,7 +656,8 @@ static int sunxi_mmc_oclk_onoff(struct sunxi_mmc_host
*host, u32 oclk_en)
static int sunxi_mmc_clk_set_rate(struct sunxi_mmc_host *host,
struct mmc_ios *ios)
{
- u32 rate, oclk_dly, rval, sclk_dly;
+ long rate;
+ u32 oclk_dly, rval, sclk_dly;
u32 clock = ios->clock;
int ret;
@@ -666,13 +667,18 @@ static int sunxi_mmc_clk_set_rate(struct sunxi_mmc_host
*host,
clock <<= 1;
rate = clk_round_rate(host->clk_mmc, clock);
- dev_dbg(mmc_dev(host->mmc), "setting clk to %d, rounded %d\n",
+ if (rate < 0) {
+ dev_err(mmc_dev(host->mmc), "error rounding clk to %d: %ld\n",
+ clock, rate);
+ return rate;
+ }
+ dev_dbg(mmc_dev(host->mmc), "setting clk to %d, rounded %ld\n",
clock, rate);
/* setting clock rate */
ret = clk_set_rate(host->clk_mmc, rate);
if (ret) {
- dev_err(mmc_dev(host->mmc), "error setting clk to %d: %d\n",
+ dev_err(mmc_dev(host->mmc), "error setting clk to %ld: %d\n",
rate, ret);
return ret;
}
--
2.9.2
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