Move mmc_delay() from drivers/mmc/core/core.h to
include/linux/mmc/core.h. So when other functions
call it with include syntax using <linux/mmc/core.h>
of absolute path rather than "../core/core.h" of
relative path.
At the same time, change code, so schedule subsystem
has more chances to call other threads.
Signed-off-by: Chunhe Lan <Chunhe.Lan@xxxxxxxxxxxxx>
Signed-off-by: Kumar Gala <galak@xxxxxxxxxxxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Chris Ball <cjb@xxxxxxxxxx>
---
drivers/mmc/core/core.h | 12 ------------
include/linux/mmc/core.h | 17 +++++++++++++++++
2 files changed, 17 insertions(+), 12 deletions(-)
diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h
index 3bdafbc..5f63d00 100644
--- a/drivers/mmc/core/core.h
+++ b/drivers/mmc/core/core.h
@@ -11,8 +11,6 @@
#ifndef _MMC_CORE_CORE_H
#define _MMC_CORE_CORE_H
-#include <linux/delay.h>
-
#define MMC_CMD_RETRIES 3
struct mmc_bus_ops {
@@ -46,16 +44,6 @@ void mmc_set_timing(struct mmc_host *host, unsigned int timing);
void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type);
void mmc_power_off(struct mmc_host *host);
-static inline void mmc_delay(unsigned int ms)
-{
- if (ms < 1000 / HZ) {
- cond_resched();
- mdelay(ms);
- } else {
- msleep(ms);
- }
-}
-
void mmc_rescan(struct work_struct *work);
void mmc_start_host(struct mmc_host *host);
void mmc_stop_host(struct mmc_host *host);
diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h
index 5bf7c22..e051c5b 100644
--- a/include/linux/mmc/core.h
+++ b/include/linux/mmc/core.h
@@ -10,6 +10,7 @@
#include <linux/interrupt.h>
#include <linux/completion.h>
+#include <linux/delay.h>
struct request;
struct mmc_data;
@@ -198,6 +199,22 @@ static inline void mmc_claim_host(struct mmc_host *host)
__mmc_claim_host(host, NULL);
}
+static inline void mmc_delay(unsigned int ms)
+{
+ ktime_t end = ktime_add_us(ktime_get(), ms * 1000);
+
+ while (1) {
+ s64 remaining;
+
+ cond_resched();
+ remaining = ktime_to_us(ktime_sub(end, ktime_get()));
+ if (remaining < 0)
+ break;
+
+ udelay(min_t(u32, remaining, 100));
+ }
+}
+
extern u32 mmc_vddrange_to_ocrmask(int vdd_min, int vdd_max);
#endif /* LINUX_MMC_CORE_H */
--
1.7.6.5
--
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