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authorAdrian Hunter <adrian.hunter@intel.com>2018-12-10 10:56:24 +0200
committerUlf Hansson <ulf.hansson@linaro.org>2018-12-17 08:26:24 +0100
commitea6d027312111c6d96309ad1a684b33cb37e6764 (patch)
tree74a9dbc190374754052add3e30b3416f5efbf7ff /drivers/mmc
parent566b60209427ed6b442b0b0cb3dba04187fba330 (diff)
downloadlinux-ea6d027312111c6d96309ad1a684b33cb37e6764.tar.bz2
mmc: sdhci-of-esdhc: Fix timeout checks
Always check the wait condition before returning timeout. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/host/sdhci-of-esdhc.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index e21e90f81bbd..4e669b4edfc1 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -530,8 +530,12 @@ static void esdhc_clock_enable(struct sdhci_host *host, bool enable)
/* Wait max 20 ms */
timeout = ktime_add_ms(ktime_get(), 20);
val = ESDHC_CLOCK_STABLE;
- while (!(sdhci_readl(host, ESDHC_PRSSTAT) & val)) {
- if (ktime_after(ktime_get(), timeout)) {
+ while (1) {
+ bool timedout = ktime_after(ktime_get(), timeout);
+
+ if (sdhci_readl(host, ESDHC_PRSSTAT) & val)
+ break;
+ if (timedout) {
pr_err("%s: Internal clock never stabilised.\n",
mmc_hostname(host->mmc));
break;
@@ -639,8 +643,12 @@ static void esdhc_of_set_clock(struct sdhci_host *host, unsigned int clock)
/* Wait max 20 ms */
timeout = ktime_add_ms(ktime_get(), 20);
- while (!(sdhci_readl(host, ESDHC_PRSSTAT) & ESDHC_CLOCK_STABLE)) {
- if (ktime_after(ktime_get(), timeout)) {
+ while (1) {
+ bool timedout = ktime_after(ktime_get(), timeout);
+
+ if (sdhci_readl(host, ESDHC_PRSSTAT) & ESDHC_CLOCK_STABLE)
+ break;
+ if (timedout) {
pr_err("%s: Internal clock never stabilised.\n",
mmc_hostname(host->mmc));
return;