1. Tuning success at 40th time should be ok, but current code take this as
failed.
2. tuning_count equals to 0 means disable retuning function, but current
code still do retuning.
Signed-off-by: peter.guo <peter....@bayhubtech.com>
---
drivers/mmc/host/sdhci.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 68b3cac..9a35a5e 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1900,7 +1900,7 @@ static int sdhci_execute_tuning(struct mmc_host *mmc, u32
opcode)
* Issue CMD19 repeatedly till Execute Tuning is set to 0 or the number
* of loops reaches 40 times or a timeout of 150ms occurs.
*/
- timeout = jiffies + msecs_to_jiffies(150);
+z timeout = jiffies + msecs_to_jiffies(150);
do {
struct mmc_command cmd = {0};
struct mmc_request mrq = {NULL};
@@ -1983,7 +1983,7 @@ static int sdhci_execute_tuning(struct mmc_host *mmc, u32
opcode)
* The Host Driver has exhausted the maximum number of loops allowed,
* so use fixed sampling frequency.
*/
- if (!tuning_loop_counter || time_after(jiffies, timeout)) {
+ if ((tuning_loop_counter < 0) || time_after(jiffies, timeout)) {
ctrl &= ~SDHCI_CTRL_TUNED_CLK;
sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
err = -EIO;
@@ -2013,7 +2013,8 @@ out:
} else {
host->flags &= ~SDHCI_NEEDS_RETUNING;
/* Reload the new initial value for timeout workqueue */
- if (host->tuning_mode == SDHCI_TUNING_MODE_1)
+ if ((host->tuning_mode == SDHCI_TUNING_MODE_1) &&
+ (host->tuning_count))
schedule_delayed_work(&host->tuning_timeout_work,
host->tuning_count * HZ);
}
--
1.7.9.5
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