At Tue, 21 Dec 2010 22:56:32 -0500,
zhangfei gao wrote:
>
> On Tue, Dec 21, 2010 at 11:36 AM, Philip Rakity <prakity@xxxxxxxxxxx> wrote:
> >
> >
> > Can you please try this diff and see if it works for you.
> >
> > Will do formal patch after your testing. ÂWhat card is failing ?
> >
> > Please let me know the manufacturing information so can add card to my test suite.
> >
> > Philip
> >
> > diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
> > index 1d8409f..77072c8 100644
> > --- a/drivers/mmc/core/mmc.c
> > +++ b/drivers/mmc/core/mmc.c
> > @@ -558,6 +558,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
> > Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â EXT_CSD_BUS_WIDTH,
> > Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â ext_csd_bits[idx][0]);
> > Â Â Â Â Â Â Â Â Â Â Â Âif (!err) {
> > + Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â mmc_set_bus_width_ddr(card->host,
> > + Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â bus_width, MMC_SDR_MODE);
> Test OK,
> Curious why move here, then mmc_set_bus_width_ddr is called twice in
> fact when ddr=0 && (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)), though
> not impact function.
> mmc_set_bus_width is mmc_set_bus_width_ddr(host, width, MMC_SDR_MODE).
Right. How about the patch below? This one just moves the call
before caps test, so it's simpler (and avoiding double calls).
thanks,
Takashi
===
>From b66b9704f8d2fefa402741fb17949224b2766b4f Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@xxxxxxx>
Date: Wed, 22 Dec 2010 09:54:33 +0100
Subject: [PATCH] mmc: fix mmc_set_bus_width_ddr() call without bus-width-test cap
With the bus-width test patch, mmc_set_bus_width*() isn't called properly
when the driver doesn't set MMC_CAP_BUS_WIDTH and no DDR mode.
This patch fixes the regression by moving the call up before the cap test.
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
---
drivers/mmc/core/mmc.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 1d8409f..c86dd73 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -558,6 +558,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
EXT_CSD_BUS_WIDTH,
ext_csd_bits[idx][0]);
if (!err) {
+ mmc_set_bus_width_ddr(card->host,
+ bus_width, MMC_SDR_MODE);
/*
* If controller can't handle bus width test,
* use the highest bus width to maintain
@@ -565,8 +567,6 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
*/
if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST))
break;
- mmc_set_bus_width_ddr(card->host,
- bus_width, MMC_SDR_MODE);
err = mmc_bus_test(card, bus_width);
if (!err)
break;
--
1.7.3.4
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