diff mbox

[V3,28/30] omap_hsmmc: ensure all clock enables and disables are paired

Message ID 20090909120003.12833.82537.sendpatchset@ahunter-laptop (mailing list archive)
State Awaiting Upstream, archived
Headers show

Commit Message

Adrian Hunter Sept. 9, 2009, noon UTC
From baf6574a1b5e7c4fdc4a66d9e038efeee75ea1a0 Mon Sep 17 00:00:00 2001
From: Adrian Hunter <adrian.hunter@nokia.com>
Date: Sun, 31 May 2009 19:27:36 +0300
Subject: [PATCH] omap_hsmmc: ensure all clock enables and disables are paired

Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
---
 drivers/mmc/host/omap_hsmmc.c |   26 ++++++++++++++------------
 1 files changed, 14 insertions(+), 12 deletions(-)

Comments

Andrew Morton Sept. 10, 2009, 10:02 p.m. UTC | #1
On Wed, 09 Sep 2009 15:00:03 +0300
Adrian Hunter <adrian.hunter@nokia.com> wrote:

> >From baf6574a1b5e7c4fdc4a66d9e038efeee75ea1a0 Mon Sep 17 00:00:00 2001
> From: Adrian Hunter <adrian.hunter@nokia.com>
> Date: Sun, 31 May 2009 19:27:36 +0300
> Subject: [PATCH] omap_hsmmc: ensure all clock enables and disables are paired
> 

This patch hasn't been updated with
omap_hsmmc-ensure-all-clock-enables-and-disables-are-paired-fix-for-the-db-clock-failure-message.patch,
and
omap_hsmmc-ensure-all-clock-enables-and-disables-are-paired-fix-for-the-db-clock-failure-message.patch
is not present in the v3 patchset.  What's up with that?


I went through the patchset seeing what you'd done.

mmc-add-host-capabilities-for-sd-only-and-mmc-only.patch and
omap_hsmmc-pass-host-capabilities-for-sd-only-and-mmc-only.patch were
dropped.

arm-omap-rx51-set-mmc-capabilities-and-power-saving-flag.patch was
significantly altered (I queued a delta for that).

omap_hsmmc-make-use-of-new-mmc_cap_nonremovable-host-capability.patch
was changed a bit to fix rejects (I think).

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Adrian Hunter Sept. 11, 2009, 8:31 a.m. UTC | #2
Andrew Morton wrote:
> On Wed, 09 Sep 2009 15:00:03 +0300
> Adrian Hunter <adrian.hunter@nokia.com> wrote:
> 
>> >From baf6574a1b5e7c4fdc4a66d9e038efeee75ea1a0 Mon Sep 17 00:00:00 2001
>> From: Adrian Hunter <adrian.hunter@nokia.com>
>> Date: Sun, 31 May 2009 19:27:36 +0300
>> Subject: [PATCH] omap_hsmmc: ensure all clock enables and disables are paired
>>
> 
> This patch hasn't been updated with
> omap_hsmmc-ensure-all-clock-enables-and-disables-are-paired-fix-for-the-db-clock-failure-message.patch,
> and
> omap_hsmmc-ensure-all-clock-enables-and-disables-are-paired-fix-for-the-db-clock-failure-message.patch
> is not present in the v3 patchset.  What's up with that?

I am not sure what you want here.  madhu's patch should apply cleanly on top of the ones I sent.

> 
> 
> I went through the patchset seeing what you'd done.
> 
> mmc-add-host-capabilities-for-sd-only-and-mmc-only.patch and
> omap_hsmmc-pass-host-capabilities-for-sd-only-and-mmc-only.patch were
> dropped.
> 
> arm-omap-rx51-set-mmc-capabilities-and-power-saving-flag.patch was
> significantly altered (I queued a delta for that).
> 
> omap_hsmmc-make-use-of-new-mmc_cap_nonremovable-host-capability.patch
> was changed a bit to fix rejects (I think).

Yes that is right.
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diff mbox

Patch

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 047e656..64780da 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -735,22 +735,24 @@  static int omap_hsmmc_switch_opcond(struct omap_hsmmc_host *host, int vdd)
 	/* Disable the clocks */
 	clk_disable(host->fclk);
 	clk_disable(host->iclk);
-	clk_disable(host->dbclk);
+	if (host->dbclk_enabled)
+		clk_disable(host->dbclk);
 
 	/* Turn the power off */
 	ret = mmc_slot(host).set_power(host->dev, host->slot_id, 0, 0);
-	if (ret != 0)
-		goto err;
 
 	/* Turn the power ON with given VDD 1.8 or 3.0v */
-	ret = mmc_slot(host).set_power(host->dev, host->slot_id, 1, vdd);
+	if (!ret)
+		ret = mmc_slot(host).set_power(host->dev, host->slot_id, 1,
+					       vdd);
+	clk_enable(host->iclk);
+	if (host->dbclk_enabled)
+		clk_enable(host->dbclk);
+	clk_enable(host->fclk);
+
 	if (ret != 0)
 		goto err;
 
-	clk_enable(host->fclk);
-	clk_enable(host->iclk);
-	clk_enable(host->dbclk);
-
 	OMAP_HSMMC_WRITE(host->base, HCTL,
 		OMAP_HSMMC_READ(host->base, HCTL) & SDVSCLR);
 	reg_val = OMAP_HSMMC_READ(host->base, HCTL);
@@ -1898,7 +1900,8 @@  static int omap_hsmmc_suspend(struct platform_device *pdev, pm_message_t state)
 				OMAP_HSMMC_READ(host->base, HCTL) & ~SDBP);
 			mmc_host_disable(host->mmc);
 			clk_disable(host->iclk);
-			clk_disable(host->dbclk);
+			if (host->dbclk_enabled)
+				clk_disable(host->dbclk);
 		} else {
 			host->suspended = 0;
 			if (host->pdata->resume) {
@@ -1929,9 +1932,8 @@  static int omap_hsmmc_resume(struct platform_device *pdev)
 		if (ret)
 			goto clk_en_err;
 
-		if (clk_enable(host->dbclk) != 0)
-			dev_dbg(mmc_dev(host->mmc),
-					"Enabling debounce clk failed\n");
+		if (host->dbclk_enabled)
+			clk_enable(host->dbclk);
 
 		if (mmc_host_enable(host->mmc) != 0) {
 			clk_disable(host->iclk);