diff mbox

[v3,13/13] mmc: tmio: add barriers to IO operations

Message ID 1360180020-18555-14-git-send-email-g.liakhovetski@gmx.de (mailing list archive)
State New, archived
Headers show

Commit Message

Guennadi Liakhovetski Feb. 6, 2013, 7:47 p.m. UTC 
Without barriers SDIO operations fail with runtime PM enabled.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: Paul Mundt <lethal@linux-sh.org>
---

v3: use iowrite16_rep() and ioread16_rep() for consistency.

 drivers/mmc/host/tmio_mmc.h |   18 ++++++++++--------
 1 files changed, 10 insertions(+), 8 deletions(-)

Comments

Paul Mundt Feb. 7, 2013, 9:51 a.m. UTC | #1 
On Wed, Feb 06, 2013 at 08:47:00PM +0100, Guennadi Liakhovetski wrote:
> Without barriers SDIO operations fail with runtime PM enabled.
> 
> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
> Cc: Paul Mundt <lethal@linux-sh.org>
> ---
> 
> v3: use iowrite16_rep() and ioread16_rep() for consistency.
> 
Looks better to me!

Reviewed-by: Paul Mundt <lethal@linux-sh.org>
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diff mbox

Patch

diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h
index d857f5c..a10ebd0 100644
--- a/drivers/mmc/host/tmio_mmc.h
+++ b/drivers/mmc/host/tmio_mmc.h
@@ -159,19 +159,20 @@  int tmio_mmc_host_runtime_resume(struct device *dev);
 
 static inline u16 sd_ctrl_read16(struct tmio_mmc_host *host, int addr)
 {
-	return readw(host->ctl + (addr << host->bus_shift));
+	return ioread16(host->ctl + (addr << host->bus_shift));
 }
 
 static inline void sd_ctrl_read16_rep(struct tmio_mmc_host *host, int addr,
 		u16 *buf, int count)
 {
-	readsw(host->ctl + (addr << host->bus_shift), buf, count);
+	wmb();
+	ioread16_rep(host->ctl + (addr << host->bus_shift), buf, count);
 }
 
 static inline u32 sd_ctrl_read32(struct tmio_mmc_host *host, int addr)
 {
-	return readw(host->ctl + (addr << host->bus_shift)) |
-	       readw(host->ctl + ((addr + 2) << host->bus_shift)) << 16;
+	return ioread16(host->ctl + (addr << host->bus_shift)) |
+	       ioread16(host->ctl + ((addr + 2) << host->bus_shift)) << 16;
 }
 
 static inline void sd_ctrl_write16(struct tmio_mmc_host *host, int addr, u16 val)
@@ -181,19 +182,20 @@  static inline void sd_ctrl_write16(struct tmio_mmc_host *host, int addr, u16 val
 	 */
 	if (host->pdata->write16_hook && host->pdata->write16_hook(host, addr))
 		return;
-	writew(val, host->ctl + (addr << host->bus_shift));
+	iowrite16(val, host->ctl + (addr << host->bus_shift));
 }
 
 static inline void sd_ctrl_write16_rep(struct tmio_mmc_host *host, int addr,
 		u16 *buf, int count)
 {
-	writesw(host->ctl + (addr << host->bus_shift), buf, count);
+	iowrite16_rep(host->ctl + (addr << host->bus_shift), buf, count);
+	wmb();
 }
 
 static inline void sd_ctrl_write32(struct tmio_mmc_host *host, int addr, u32 val)
 {
-	writew(val, host->ctl + (addr << host->bus_shift));
-	writew(val >> 16, host->ctl + ((addr + 2) << host->bus_shift));
+	iowrite16(val, host->ctl + (addr << host->bus_shift));
+	iowrite16(val >> 16, host->ctl + ((addr + 2) << host->bus_shift));
 }