lkml.org 
[lkml]   [2019]   [Feb]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4.14 099/205] mmc: sdhci-xenon: Fix timeout checks
Date
4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

[ Upstream commit 0e6e7c2ff397e1bbebc882ca3132148aaaef1ddd ]

Always check the wait condition before returning timeout.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Zhoujie Wu <zjwu@marvell.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/mmc/host/sdhci-xenon-phy.c | 10 +++++++---
drivers/mmc/host/sdhci-xenon.c | 10 +++++++---
2 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/drivers/mmc/host/sdhci-xenon-phy.c b/drivers/mmc/host/sdhci-xenon-phy.c
index ec8794335241..82051f2b7191 100644
--- a/drivers/mmc/host/sdhci-xenon-phy.c
+++ b/drivers/mmc/host/sdhci-xenon-phy.c
@@ -357,9 +357,13 @@ static int xenon_emmc_phy_enable_dll(struct sdhci_host *host)

/* Wait max 32 ms */
timeout = ktime_add_ms(ktime_get(), 32);
- while (!(sdhci_readw(host, XENON_SLOT_EXT_PRESENT_STATE) &
- XENON_DLL_LOCK_STATE)) {
- if (ktime_after(ktime_get(), timeout)) {
+ while (1) {
+ bool timedout = ktime_after(ktime_get(), timeout);
+
+ if (sdhci_readw(host, XENON_SLOT_EXT_PRESENT_STATE) &
+ XENON_DLL_LOCK_STATE)
+ break;
+ if (timedout) {
dev_err(mmc_dev(host->mmc), "Wait for DLL Lock time-out\n");
return -ETIMEDOUT;
}
diff --git a/drivers/mmc/host/sdhci-xenon.c b/drivers/mmc/host/sdhci-xenon.c
index 4d0791f6ec23..a0b5089b3274 100644
--- a/drivers/mmc/host/sdhci-xenon.c
+++ b/drivers/mmc/host/sdhci-xenon.c
@@ -34,9 +34,13 @@ static int xenon_enable_internal_clk(struct sdhci_host *host)
sdhci_writel(host, reg, SDHCI_CLOCK_CONTROL);
/* Wait max 20 ms */
timeout = ktime_add_ms(ktime_get(), 20);
- while (!((reg = sdhci_readw(host, SDHCI_CLOCK_CONTROL))
- & SDHCI_CLOCK_INT_STABLE)) {
- if (ktime_after(ktime_get(), timeout)) {
+ while (1) {
+ bool timedout = ktime_after(ktime_get(), timeout);
+
+ reg = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
+ if (reg & SDHCI_CLOCK_INT_STABLE)
+ break;
+ if (timedout) {
dev_err(mmc_dev(host->mmc), "Internal clock never stabilised.\n");
return -ETIMEDOUT;
}
--
2.19.1


\
 
 \ /
  Last update: 2019-02-11 16:29    [W:0.735 / U:0.920 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site