| Message ID | 1406718310-32078-6-git-send-email-jh80.chung@samsung.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Jaehoon, On Wed, Jul 30, 2014 at 4:05 AM, Jaehoon Chung <jh80.chung@samsung.com> wrote: > Replaced the "disable-wp" into host's quirks. > (Because the slot-node is removed at dt-file.) > > Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> > Tested-by: Sachin Kamat <sachin.kamat@samsung.com> > Acked-by: Seungwon Jeon <tgih.jun@samsung.com> > --- > drivers/mmc/host/dw_mmc.c | 8 +++++++- > include/linux/mmc/dw_mmc.h | 2 ++ > 2 files changed, 9 insertions(+), 1 deletion(-) > > diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c > index 1ac227c..8d9edc6 100644 > --- a/drivers/mmc/host/dw_mmc.c > +++ b/drivers/mmc/host/dw_mmc.c > @@ -997,7 +997,10 @@ static int dw_mci_get_ro(struct mmc_host *mmc) > int gpio_ro = mmc_gpio_get_ro(mmc); > > /* Use platform get_ro function, else try on board write protect */ > - if (slot->quirks & DW_MCI_SLOT_QUIRK_NO_WRITE_PROTECT) > + if (slot->quirks & DW_MCI_SLOT_QUIRK_NO_WRITE_PROTECT) { > + dev_warn(slot->host->dev, "Recommend not to use 'disable-wp'" > + "into slot-node. Change your dt-file!!"); > + } else if (slot->host->quirks & DW_MCI_QUIRK_NO_WRITE_PROTECT) This isn't what I meant. I meant that "DW_MCI_SLOT_QUIRK_NO_WRITE_PROTECT" should continue to work normally but print a warning once at bootup. In other words, this code should be: - if (slot->quirks & DW_MCI_SLOT_QUIRK_NO_WRITE_PROTECT) + if ((slot->quirks & DW_MCI_SLOT_QUIRK_NO_WRITE_PROTECT) || + (slot->host->quirks & DW_MCI_QUIRK_NO_WRITE_PROTECT)) { Then add the warning in "dw_mci_of_get_slot_quirks" which is only called once at init time. You can warn if ANY slot quirks are actually applied, like: for (idx = 0; idx < ARRAY_SIZE(of_slot_quirks); idx++) if (of_get_property(np, of_slot_quirks[idx].quirk, NULL)) { dev_warn(dev, "Slot quirk %s is deprecated\n", of_slot_quirks[idx].quirk); quirks |= of_slot_quirks[idx].id; } > read_only = 0; > else if (!IS_ERR_VALUE(gpio_ro)) > read_only = gpio_ro; > @@ -2238,6 +2241,9 @@ static struct dw_mci_of_quirks { > { > .quirk = "broken-cd", > .id = DW_MCI_QUIRK_BROKEN_CARD_DETECTION, > + }, { > + .quirk = "disable-wp", > + .id = DW_MCI_QUIRK_NO_WRITE_PROTECT, > }, > }; If you fix it like I say, then this patch should actually be patch #2 in your series and can be applied _before_ the device tree files. That means you could land patch #1 and patch #2 right away without even getting acks for the dts changes. ...and if the dts changes have conflicts they can be resolved later without blocking this patch. -Doug -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 1ac227c..8d9edc6 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -997,7 +997,10 @@ static int dw_mci_get_ro(struct mmc_host *mmc) int gpio_ro = mmc_gpio_get_ro(mmc); /* Use platform get_ro function, else try on board write protect */ - if (slot->quirks & DW_MCI_SLOT_QUIRK_NO_WRITE_PROTECT) + if (slot->quirks & DW_MCI_SLOT_QUIRK_NO_WRITE_PROTECT) { + dev_warn(slot->host->dev, "Recommend not to use 'disable-wp'" + "into slot-node. Change your dt-file!!"); + } else if (slot->host->quirks & DW_MCI_QUIRK_NO_WRITE_PROTECT) read_only = 0; else if (!IS_ERR_VALUE(gpio_ro)) read_only = gpio_ro; @@ -2238,6 +2241,9 @@ static struct dw_mci_of_quirks { { .quirk = "broken-cd", .id = DW_MCI_QUIRK_BROKEN_CARD_DETECTION, + }, { + .quirk = "disable-wp", + .id = DW_MCI_QUIRK_NO_WRITE_PROTECT, }, }; diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h index babaea9..29ce014 100644 --- a/include/linux/mmc/dw_mmc.h +++ b/include/linux/mmc/dw_mmc.h @@ -213,6 +213,8 @@ struct dw_mci_dma_ops { #define DW_MCI_QUIRK_HIGHSPEED BIT(2) /* Unreliable card detection */ #define DW_MCI_QUIRK_BROKEN_CARD_DETECTION BIT(3) +/* No write protect */ +#define DW_MCI_QUIRK_NO_WRITE_PROTECT BIT(4) /* Slot level quirks */ /* This slot has no write protect */