diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2018-12-10 10:56:24 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-12 19:46:04 +0100 |
| commit | 0749593286d6e2ae8e070beab686ce7963004ccb (patch) | |
| tree | 68528ce9608e5fdf97aec92408768f4ef7bc90c1 | |
| parent | 7c114e3dc2f9dfc95282000fab2a97f797d9df15 (diff) | |
mmc: sdhci-of-esdhc: Fix timeout checks
[ Upstream commit ea6d027312111c6d96309ad1a684b33cb37e6764 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/mmc/host/sdhci-of-esdhc.c | 16 |
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 8332f56e6c0d..7b7d077e40fd 100644 --- a/drivers/mmc/host/sdhci-of-esdhc.c +++ b/drivers/mmc/host/sdhci-of-esdhc.c @@ -481,8 +481,12 @@ 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; @@ -558,8 +562,12 @@ 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; |