diff mbox series

[v2] mmc: core: SD: Add BROKEN-SD-DISCARD quirk

Message ID 20220928095744.16455-1-avri.altman@wdc.com (mailing list archive)
State New, archived
Headers show
Series [v2] mmc: core: SD: Add BROKEN-SD-DISCARD quirk | expand

Commit Message

Avri Altman Sept. 28, 2022, 9:57 a.m. UTC
v1 -> v2:
 - Address Ulf's suggestions

Some SD-cards that are SDA-6.0 compliant reports they supports discard
while they actually don't.  This might cause mk2fs to fail while trying
to format the card and revert it to a read-only mode.

While at it, add SD MID for SANDISK. This is because eMMC MID is assign
by JEDEC and SD MID is assigned by SD 3c-LLC.

Signed-off-by: Avri Altman <avri.altman@wdc.com>
---
 drivers/mmc/core/block.c  | 6 +++++-
 drivers/mmc/core/card.h   | 6 ++++++
 drivers/mmc/core/quirks.h | 6 ++++++
 include/linux/mmc/card.h  | 1 +
 4 files changed, 18 insertions(+), 1 deletion(-)

Comments

Avri Altman Oct. 3, 2022, 10 p.m. UTC | #1
Ulf hi,
I would appreciate if you could take a 2nd look at this,
So it would make it to 6.1.

Thanks,
Avri
 
> v1 -> v2:
>  - Address Ulf's suggestions
> 
> Some SD-cards that are SDA-6.0 compliant reports they supports discard
> while they actually don't.  This might cause mk2fs to fail while trying
> to format the card and revert it to a read-only mode.
> 
> While at it, add SD MID for SANDISK. This is because eMMC MID is assign
> by JEDEC and SD MID is assigned by SD 3c-LLC.
> 
> Signed-off-by: Avri Altman <avri.altman@wdc.com>
> ---
>  drivers/mmc/core/block.c  | 6 +++++-
>  drivers/mmc/core/card.h   | 6 ++++++
>  drivers/mmc/core/quirks.h | 6 ++++++
>  include/linux/mmc/card.h  | 1 +
>  4 files changed, 18 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
> index ce89611a136e..54cd009aee50 100644
> --- a/drivers/mmc/core/block.c
> +++ b/drivers/mmc/core/block.c
> @@ -1140,8 +1140,12 @@ static void mmc_blk_issue_discard_rq(struct
> mmc_queue *mq, struct request *req)
>  {
>  	struct mmc_blk_data *md = mq->blkdata;
>  	struct mmc_card *card = md->queue.card;
> +	unsigned int arg = card->erase_arg;
> 
> -	mmc_blk_issue_erase_rq(mq, req, MMC_BLK_DISCARD, card-
> >erase_arg);
> +	if (mmc_card_broken_sd_discard(card))
> +		arg = SD_ERASE_ARG;
> +
> +	mmc_blk_issue_erase_rq(mq, req, MMC_BLK_DISCARD, arg);
>  }
> 
>  static void mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq,
> diff --git a/drivers/mmc/core/card.h b/drivers/mmc/core/card.h
> index 99045e138ba4..cfdd1ff40b86 100644
> --- a/drivers/mmc/core/card.h
> +++ b/drivers/mmc/core/card.h
> @@ -73,6 +73,7 @@ struct mmc_fixup {
>  #define EXT_CSD_REV_ANY (-1u)
> 
>  #define CID_MANFID_SANDISK      0x2
> +#define CID_MANFID_SANDISK_SD   0x3
>  #define CID_MANFID_ATP          0x9
>  #define CID_MANFID_TOSHIBA      0x11
>  #define CID_MANFID_MICRON       0x13
> @@ -258,4 +259,9 @@ static inline int mmc_card_broken_hpi(const struct
> mmc_card *c)
>  	return c->quirks & MMC_QUIRK_BROKEN_HPI;
>  }
> 
> +static inline int mmc_card_broken_sd_discard(const struct mmc_card *c)
> +{
> +	return c->quirks & MMC_QUIRK_BROKEN_SD_DISCARD;
> +}
> +
>  #endif
> diff --git a/drivers/mmc/core/quirks.h b/drivers/mmc/core/quirks.h
> index be4393988086..29b9497936df 100644
> --- a/drivers/mmc/core/quirks.h
> +++ b/drivers/mmc/core/quirks.h
> @@ -100,6 +100,12 @@ static const struct mmc_fixup __maybe_unused
> mmc_blk_fixups[] = {
>  	MMC_FIXUP("V10016", CID_MANFID_KINGSTON, CID_OEMID_ANY,
> add_quirk_mmc,
>  		  MMC_QUIRK_TRIM_BROKEN),
> 
> +	/*
> +	 * Some SD cards reports discard support while they don't
> +	 */
> +	MMC_FIXUP(CID_NAME_ANY, CID_MANFID_SANDISK_SD, 0x5344,
> add_quirk_sd,
> +		  MMC_QUIRK_BROKEN_SD_DISCARD),
> +
>  	END_FIXUP
>  };
> 
> diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
> index 8a30de08e913..c726ea781255 100644
> --- a/include/linux/mmc/card.h
> +++ b/include/linux/mmc/card.h
> @@ -293,6 +293,7 @@ struct mmc_card {
>  #define MMC_QUIRK_BROKEN_IRQ_POLLING	(1<<11)	/* Polling
> SDIO_CCCR_INTx could create a fake interrupt */
>  #define MMC_QUIRK_TRIM_BROKEN	(1<<12)		/* Skip trim */
>  #define MMC_QUIRK_BROKEN_HPI	(1<<13)		/* Disable broken HPI
> support */
> +#define MMC_QUIRK_BROKEN_SD_DISCARD	(1<<14)	/* Disable broken SD
> discard support */
> 
>  	bool			reenable_cmdq;	/* Re-enable Command Queue
> */
> 
> --
> 2.17.1
Ulf Hansson Oct. 4, 2022, 11:28 a.m. UTC | #2
On Tue, 4 Oct 2022 at 00:01, Avri Altman <Avri.Altman@wdc.com> wrote:
>
> Ulf hi,
> I would appreciate if you could take a 2nd look at this,
> So it would make it to 6.1.

I am preparing the pull request for v6.1-rc1, so this won't be part of that.

Although, we can still queue this as a fix for v6.1-rc2 - and we
should also tag this for stable kernels, right!?

>
> Thanks,
> Avri
>

Kind regards
Uffe


> > v1 -> v2:
> >  - Address Ulf's suggestions
> >
> > Some SD-cards that are SDA-6.0 compliant reports they supports discard
> > while they actually don't.  This might cause mk2fs to fail while trying
> > to format the card and revert it to a read-only mode.
> >
> > While at it, add SD MID for SANDISK. This is because eMMC MID is assign
> > by JEDEC and SD MID is assigned by SD 3c-LLC.
> >
> > Signed-off-by: Avri Altman <avri.altman@wdc.com>
> > ---
> >  drivers/mmc/core/block.c  | 6 +++++-
> >  drivers/mmc/core/card.h   | 6 ++++++
> >  drivers/mmc/core/quirks.h | 6 ++++++
> >  include/linux/mmc/card.h  | 1 +
> >  4 files changed, 18 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
> > index ce89611a136e..54cd009aee50 100644
> > --- a/drivers/mmc/core/block.c
> > +++ b/drivers/mmc/core/block.c
> > @@ -1140,8 +1140,12 @@ static void mmc_blk_issue_discard_rq(struct
> > mmc_queue *mq, struct request *req)
> >  {
> >       struct mmc_blk_data *md = mq->blkdata;
> >       struct mmc_card *card = md->queue.card;
> > +     unsigned int arg = card->erase_arg;
> >
> > -     mmc_blk_issue_erase_rq(mq, req, MMC_BLK_DISCARD, card-
> > >erase_arg);
> > +     if (mmc_card_broken_sd_discard(card))
> > +             arg = SD_ERASE_ARG;
> > +
> > +     mmc_blk_issue_erase_rq(mq, req, MMC_BLK_DISCARD, arg);
> >  }
> >
> >  static void mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq,
> > diff --git a/drivers/mmc/core/card.h b/drivers/mmc/core/card.h
> > index 99045e138ba4..cfdd1ff40b86 100644
> > --- a/drivers/mmc/core/card.h
> > +++ b/drivers/mmc/core/card.h
> > @@ -73,6 +73,7 @@ struct mmc_fixup {
> >  #define EXT_CSD_REV_ANY (-1u)
> >
> >  #define CID_MANFID_SANDISK      0x2
> > +#define CID_MANFID_SANDISK_SD   0x3
> >  #define CID_MANFID_ATP          0x9
> >  #define CID_MANFID_TOSHIBA      0x11
> >  #define CID_MANFID_MICRON       0x13
> > @@ -258,4 +259,9 @@ static inline int mmc_card_broken_hpi(const struct
> > mmc_card *c)
> >       return c->quirks & MMC_QUIRK_BROKEN_HPI;
> >  }
> >
> > +static inline int mmc_card_broken_sd_discard(const struct mmc_card *c)
> > +{
> > +     return c->quirks & MMC_QUIRK_BROKEN_SD_DISCARD;
> > +}
> > +
> >  #endif
> > diff --git a/drivers/mmc/core/quirks.h b/drivers/mmc/core/quirks.h
> > index be4393988086..29b9497936df 100644
> > --- a/drivers/mmc/core/quirks.h
> > +++ b/drivers/mmc/core/quirks.h
> > @@ -100,6 +100,12 @@ static const struct mmc_fixup __maybe_unused
> > mmc_blk_fixups[] = {
> >       MMC_FIXUP("V10016", CID_MANFID_KINGSTON, CID_OEMID_ANY,
> > add_quirk_mmc,
> >                 MMC_QUIRK_TRIM_BROKEN),
> >
> > +     /*
> > +      * Some SD cards reports discard support while they don't
> > +      */
> > +     MMC_FIXUP(CID_NAME_ANY, CID_MANFID_SANDISK_SD, 0x5344,
> > add_quirk_sd,
> > +               MMC_QUIRK_BROKEN_SD_DISCARD),
> > +
> >       END_FIXUP
> >  };
> >
> > diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
> > index 8a30de08e913..c726ea781255 100644
> > --- a/include/linux/mmc/card.h
> > +++ b/include/linux/mmc/card.h
> > @@ -293,6 +293,7 @@ struct mmc_card {
> >  #define MMC_QUIRK_BROKEN_IRQ_POLLING (1<<11) /* Polling
> > SDIO_CCCR_INTx could create a fake interrupt */
> >  #define MMC_QUIRK_TRIM_BROKEN        (1<<12)         /* Skip trim */
> >  #define MMC_QUIRK_BROKEN_HPI (1<<13)         /* Disable broken HPI
> > support */
> > +#define MMC_QUIRK_BROKEN_SD_DISCARD  (1<<14) /* Disable broken SD
> > discard support */
> >
> >       bool                    reenable_cmdq;  /* Re-enable Command Queue
> > */
> >
> > --
> > 2.17.1
>
Avri Altman Oct. 4, 2022, 12:57 p.m. UTC | #3
> > Ulf hi,
> > I would appreciate if you could take a 2nd look at this, So it would
> > make it to 6.1.
> 
> I am preparing the pull request for v6.1-rc1, so this won't be part of that.
> 
> Although, we can still queue this as a fix for v6.1-rc2 - and we should also tag
> this for stable kernels, right!?
Yes.  Thanks a lot.
Avri

> 
> >
> > Thanks,
> > Avri
> >
> 
> Kind regards
> Uffe
> 
> 
> > > v1 -> v2:
> > >  - Address Ulf's suggestions
> > >
> > > Some SD-cards that are SDA-6.0 compliant reports they supports
> > > discard while they actually don't.  This might cause mk2fs to fail
> > > while trying to format the card and revert it to a read-only mode.
> > >
> > > While at it, add SD MID for SANDISK. This is because eMMC MID is
> > > assign by JEDEC and SD MID is assigned by SD 3c-LLC.
> > >
> > > Signed-off-by: Avri Altman <avri.altman@wdc.com>
> > > ---
> > >  drivers/mmc/core/block.c  | 6 +++++-
> > >  drivers/mmc/core/card.h   | 6 ++++++
> > >  drivers/mmc/core/quirks.h | 6 ++++++  include/linux/mmc/card.h  | 1
> > > +
> > >  4 files changed, 18 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
> > > index ce89611a136e..54cd009aee50 100644
> > > --- a/drivers/mmc/core/block.c
> > > +++ b/drivers/mmc/core/block.c
> > > @@ -1140,8 +1140,12 @@ static void mmc_blk_issue_discard_rq(struct
> > > mmc_queue *mq, struct request *req)  {
> > >       struct mmc_blk_data *md = mq->blkdata;
> > >       struct mmc_card *card = md->queue.card;
> > > +     unsigned int arg = card->erase_arg;
> > >
> > > -     mmc_blk_issue_erase_rq(mq, req, MMC_BLK_DISCARD, card-
> > > >erase_arg);
> > > +     if (mmc_card_broken_sd_discard(card))
> > > +             arg = SD_ERASE_ARG;
> > > +
> > > +     mmc_blk_issue_erase_rq(mq, req, MMC_BLK_DISCARD, arg);
> > >  }
> > >
> > >  static void mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq, diff
> > > --git a/drivers/mmc/core/card.h b/drivers/mmc/core/card.h index
> > > 99045e138ba4..cfdd1ff40b86 100644
> > > --- a/drivers/mmc/core/card.h
> > > +++ b/drivers/mmc/core/card.h
> > > @@ -73,6 +73,7 @@ struct mmc_fixup {  #define EXT_CSD_REV_ANY (-1u)
> > >
> > >  #define CID_MANFID_SANDISK      0x2
> > > +#define CID_MANFID_SANDISK_SD   0x3
> > >  #define CID_MANFID_ATP          0x9
> > >  #define CID_MANFID_TOSHIBA      0x11
> > >  #define CID_MANFID_MICRON       0x13
> > > @@ -258,4 +259,9 @@ static inline int mmc_card_broken_hpi(const
> > > struct mmc_card *c)
> > >       return c->quirks & MMC_QUIRK_BROKEN_HPI;  }
> > >
> > > +static inline int mmc_card_broken_sd_discard(const struct mmc_card
> > > +*c) {
> > > +     return c->quirks & MMC_QUIRK_BROKEN_SD_DISCARD; }
> > > +
> > >  #endif
> > > diff --git a/drivers/mmc/core/quirks.h b/drivers/mmc/core/quirks.h
> > > index be4393988086..29b9497936df 100644
> > > --- a/drivers/mmc/core/quirks.h
> > > +++ b/drivers/mmc/core/quirks.h
> > > @@ -100,6 +100,12 @@ static const struct mmc_fixup __maybe_unused
> > > mmc_blk_fixups[] = {
> > >       MMC_FIXUP("V10016", CID_MANFID_KINGSTON, CID_OEMID_ANY,
> > > add_quirk_mmc,
> > >                 MMC_QUIRK_TRIM_BROKEN),
> > >
> > > +     /*
> > > +      * Some SD cards reports discard support while they don't
> > > +      */
> > > +     MMC_FIXUP(CID_NAME_ANY, CID_MANFID_SANDISK_SD, 0x5344,
> > > add_quirk_sd,
> > > +               MMC_QUIRK_BROKEN_SD_DISCARD),
> > > +
> > >       END_FIXUP
> > >  };
> > >
> > > diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
> > > index 8a30de08e913..c726ea781255 100644
> > > --- a/include/linux/mmc/card.h
> > > +++ b/include/linux/mmc/card.h
> > > @@ -293,6 +293,7 @@ struct mmc_card {  #define
> > > MMC_QUIRK_BROKEN_IRQ_POLLING (1<<11) /* Polling SDIO_CCCR_INTx
> could
> > > create a fake interrupt */
> > >  #define MMC_QUIRK_TRIM_BROKEN        (1<<12)         /* Skip trim */
> > >  #define MMC_QUIRK_BROKEN_HPI (1<<13)         /* Disable broken HPI
> > > support */
> > > +#define MMC_QUIRK_BROKEN_SD_DISCARD  (1<<14) /* Disable broken SD
> > > discard support */
> > >
> > >       bool                    reenable_cmdq;  /* Re-enable Command Queue
> > > */
> > >
> > > --
> > > 2.17.1
> >
Ulf Hansson Oct. 6, 2022, 11:56 a.m. UTC | #4
On Wed, 28 Sept 2022 at 11:58, Avri Altman <avri.altman@wdc.com> wrote:
>
> v1 -> v2:
>  - Address Ulf's suggestions
>
> Some SD-cards that are SDA-6.0 compliant reports they supports discard
> while they actually don't.  This might cause mk2fs to fail while trying
> to format the card and revert it to a read-only mode.
>
> While at it, add SD MID for SANDISK. This is because eMMC MID is assign
> by JEDEC and SD MID is assigned by SD 3c-LLC.
>
> Signed-off-by: Avri Altman <avri.altman@wdc.com>

Applied for fixes and by adding a stable tag, thanks!

Kind regards
Uffe


> ---
>  drivers/mmc/core/block.c  | 6 +++++-
>  drivers/mmc/core/card.h   | 6 ++++++
>  drivers/mmc/core/quirks.h | 6 ++++++
>  include/linux/mmc/card.h  | 1 +
>  4 files changed, 18 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
> index ce89611a136e..54cd009aee50 100644
> --- a/drivers/mmc/core/block.c
> +++ b/drivers/mmc/core/block.c
> @@ -1140,8 +1140,12 @@ static void mmc_blk_issue_discard_rq(struct mmc_queue *mq, struct request *req)
>  {
>         struct mmc_blk_data *md = mq->blkdata;
>         struct mmc_card *card = md->queue.card;
> +       unsigned int arg = card->erase_arg;
>
> -       mmc_blk_issue_erase_rq(mq, req, MMC_BLK_DISCARD, card->erase_arg);
> +       if (mmc_card_broken_sd_discard(card))
> +               arg = SD_ERASE_ARG;
> +
> +       mmc_blk_issue_erase_rq(mq, req, MMC_BLK_DISCARD, arg);
>  }
>
>  static void mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq,
> diff --git a/drivers/mmc/core/card.h b/drivers/mmc/core/card.h
> index 99045e138ba4..cfdd1ff40b86 100644
> --- a/drivers/mmc/core/card.h
> +++ b/drivers/mmc/core/card.h
> @@ -73,6 +73,7 @@ struct mmc_fixup {
>  #define EXT_CSD_REV_ANY (-1u)
>
>  #define CID_MANFID_SANDISK      0x2
> +#define CID_MANFID_SANDISK_SD   0x3
>  #define CID_MANFID_ATP          0x9
>  #define CID_MANFID_TOSHIBA      0x11
>  #define CID_MANFID_MICRON       0x13
> @@ -258,4 +259,9 @@ static inline int mmc_card_broken_hpi(const struct mmc_card *c)
>         return c->quirks & MMC_QUIRK_BROKEN_HPI;
>  }
>
> +static inline int mmc_card_broken_sd_discard(const struct mmc_card *c)
> +{
> +       return c->quirks & MMC_QUIRK_BROKEN_SD_DISCARD;
> +}
> +
>  #endif
> diff --git a/drivers/mmc/core/quirks.h b/drivers/mmc/core/quirks.h
> index be4393988086..29b9497936df 100644
> --- a/drivers/mmc/core/quirks.h
> +++ b/drivers/mmc/core/quirks.h
> @@ -100,6 +100,12 @@ static const struct mmc_fixup __maybe_unused mmc_blk_fixups[] = {
>         MMC_FIXUP("V10016", CID_MANFID_KINGSTON, CID_OEMID_ANY, add_quirk_mmc,
>                   MMC_QUIRK_TRIM_BROKEN),
>
> +       /*
> +        * Some SD cards reports discard support while they don't
> +        */
> +       MMC_FIXUP(CID_NAME_ANY, CID_MANFID_SANDISK_SD, 0x5344, add_quirk_sd,
> +                 MMC_QUIRK_BROKEN_SD_DISCARD),
> +
>         END_FIXUP
>  };
>
> diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
> index 8a30de08e913..c726ea781255 100644
> --- a/include/linux/mmc/card.h
> +++ b/include/linux/mmc/card.h
> @@ -293,6 +293,7 @@ struct mmc_card {
>  #define MMC_QUIRK_BROKEN_IRQ_POLLING   (1<<11) /* Polling SDIO_CCCR_INTx could create a fake interrupt */
>  #define MMC_QUIRK_TRIM_BROKEN  (1<<12)         /* Skip trim */
>  #define MMC_QUIRK_BROKEN_HPI   (1<<13)         /* Disable broken HPI support */
> +#define MMC_QUIRK_BROKEN_SD_DISCARD    (1<<14) /* Disable broken SD discard support */
>
>         bool                    reenable_cmdq;  /* Re-enable Command Queue */
>
> --
> 2.17.1
>
diff mbox series

Patch

diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index ce89611a136e..54cd009aee50 100644
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -1140,8 +1140,12 @@  static void mmc_blk_issue_discard_rq(struct mmc_queue *mq, struct request *req)
 {
 	struct mmc_blk_data *md = mq->blkdata;
 	struct mmc_card *card = md->queue.card;
+	unsigned int arg = card->erase_arg;
 
-	mmc_blk_issue_erase_rq(mq, req, MMC_BLK_DISCARD, card->erase_arg);
+	if (mmc_card_broken_sd_discard(card))
+		arg = SD_ERASE_ARG;
+
+	mmc_blk_issue_erase_rq(mq, req, MMC_BLK_DISCARD, arg);
 }
 
 static void mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq,
diff --git a/drivers/mmc/core/card.h b/drivers/mmc/core/card.h
index 99045e138ba4..cfdd1ff40b86 100644
--- a/drivers/mmc/core/card.h
+++ b/drivers/mmc/core/card.h
@@ -73,6 +73,7 @@  struct mmc_fixup {
 #define EXT_CSD_REV_ANY (-1u)
 
 #define CID_MANFID_SANDISK      0x2
+#define CID_MANFID_SANDISK_SD   0x3
 #define CID_MANFID_ATP          0x9
 #define CID_MANFID_TOSHIBA      0x11
 #define CID_MANFID_MICRON       0x13
@@ -258,4 +259,9 @@  static inline int mmc_card_broken_hpi(const struct mmc_card *c)
 	return c->quirks & MMC_QUIRK_BROKEN_HPI;
 }
 
+static inline int mmc_card_broken_sd_discard(const struct mmc_card *c)
+{
+	return c->quirks & MMC_QUIRK_BROKEN_SD_DISCARD;
+}
+
 #endif
diff --git a/drivers/mmc/core/quirks.h b/drivers/mmc/core/quirks.h
index be4393988086..29b9497936df 100644
--- a/drivers/mmc/core/quirks.h
+++ b/drivers/mmc/core/quirks.h
@@ -100,6 +100,12 @@  static const struct mmc_fixup __maybe_unused mmc_blk_fixups[] = {
 	MMC_FIXUP("V10016", CID_MANFID_KINGSTON, CID_OEMID_ANY, add_quirk_mmc,
 		  MMC_QUIRK_TRIM_BROKEN),
 
+	/*
+	 * Some SD cards reports discard support while they don't
+	 */
+	MMC_FIXUP(CID_NAME_ANY, CID_MANFID_SANDISK_SD, 0x5344, add_quirk_sd,
+		  MMC_QUIRK_BROKEN_SD_DISCARD),
+
 	END_FIXUP
 };
 
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 8a30de08e913..c726ea781255 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -293,6 +293,7 @@  struct mmc_card {
 #define MMC_QUIRK_BROKEN_IRQ_POLLING	(1<<11)	/* Polling SDIO_CCCR_INTx could create a fake interrupt */
 #define MMC_QUIRK_TRIM_BROKEN	(1<<12)		/* Skip trim */
 #define MMC_QUIRK_BROKEN_HPI	(1<<13)		/* Disable broken HPI support */
+#define MMC_QUIRK_BROKEN_SD_DISCARD	(1<<14)	/* Disable broken SD discard support */
 
 	bool			reenable_cmdq;	/* Re-enable Command Queue */