On 11 February 2014 19:40, Puthikorn Voravootivat <puthik@xxxxxxxxxxxx> wrote:
> Remove host erase capacity check to enable trim and
> discard feature in supported eMMC device.
I guess your patch applies for SD cards as well. Maybe some more
information in the commit message about this.
>
> Signed-off-by: Puthikorn Voravootivat <puthik@xxxxxxxxxxxx>
> ---
> v3 change:
> As suggested by Jaehoon, this patch remove MMC_CAP_ERASE instead of
> force enable it.
>
> v2 change:
> Instead of add MMC_CAP_ERASE just only for dw_mmc, this patch adds
> this capability to all host.
>
> arch/arm/mach-ux500/board-mop500-sdi.c | 3 ---
You need acks from ux500 SOC maintainer for this, I suggest you resend.
Depending on his input, you might be advised to handle this in more
step-by-step procedure, but let's see.
Otherwise, it looks good.
Kind regards
Ulf Hansson
> drivers/mmc/core/core.c | 6 ++----
> drivers/mmc/host/omap_hsmmc.c | 2 +-
> drivers/mmc/host/sdhci.c | 2 +-
> include/linux/mmc/host.h | 1 -
> 5 files changed, 4 insertions(+), 10 deletions(-)
>
> diff --git a/arch/arm/mach-ux500/board-mop500-sdi.c b/arch/arm/mach-ux500/board-mop500-sdi.c
> index fcbf3a1..6d9feb8 100644
> --- a/arch/arm/mach-ux500/board-mop500-sdi.c
> +++ b/arch/arm/mach-ux500/board-mop500-sdi.c
> @@ -48,7 +48,6 @@ struct mmci_platform_data mop500_sdi0_data = {
> .capabilities = MMC_CAP_4_BIT_DATA |
> MMC_CAP_SD_HIGHSPEED |
> MMC_CAP_MMC_HIGHSPEED |
> - MMC_CAP_ERASE |
> MMC_CAP_UHS_SDR12 |
> MMC_CAP_UHS_SDR25,
> .gpio_wp = -1,
> @@ -119,7 +118,6 @@ struct mmci_platform_data mop500_sdi2_data = {
> MMC_CAP_8_BIT_DATA |
> MMC_CAP_NONREMOVABLE |
> MMC_CAP_MMC_HIGHSPEED |
> - MMC_CAP_ERASE |
> MMC_CAP_CMD23,
> .gpio_cd = -1,
> .gpio_wp = -1,
> @@ -154,7 +152,6 @@ struct mmci_platform_data mop500_sdi4_data = {
> MMC_CAP_8_BIT_DATA |
> MMC_CAP_NONREMOVABLE |
> MMC_CAP_MMC_HIGHSPEED |
> - MMC_CAP_ERASE |
> MMC_CAP_CMD23,
> .gpio_cd = -1,
> .gpio_wp = -1,
> diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
> index 098374b..82de9f1 100644
> --- a/drivers/mmc/core/core.c
> +++ b/drivers/mmc/core/core.c
> @@ -2007,8 +2007,7 @@ int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr,
> {
> unsigned int rem, to = from + nr;
>
> - if (!(card->host->caps & MMC_CAP_ERASE) ||
> - !(card->csd.cmdclass & CCC_ERASE))
> + if (!(card->csd.cmdclass & CCC_ERASE))
> return -EOPNOTSUPP;
>
> if (!card->erase_size)
> @@ -2062,8 +2061,7 @@ EXPORT_SYMBOL(mmc_erase);
>
> int mmc_can_erase(struct mmc_card *card)
> {
> - if ((card->host->caps & MMC_CAP_ERASE) &&
> - (card->csd.cmdclass & CCC_ERASE) && card->erase_size)
> + if ((card->csd.cmdclass & CCC_ERASE) && card->erase_size)
> return 1;
> return 0;
> }
> diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
> index dbd32ad..99d8558 100644
> --- a/drivers/mmc/host/omap_hsmmc.c
> +++ b/drivers/mmc/host/omap_hsmmc.c
> @@ -1873,7 +1873,7 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
> mmc->max_seg_size = mmc->max_req_size;
>
> mmc->caps |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED |
> - MMC_CAP_WAIT_WHILE_BUSY | MMC_CAP_ERASE;
> + MMC_CAP_WAIT_WHILE_BUSY;
>
> mmc->caps |= mmc_slot(host).caps;
> if (mmc->caps & MMC_CAP_8_BIT_DATA)
> diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
> index 9ddef47..6a50141 100644
> --- a/drivers/mmc/host/sdhci.c
> +++ b/drivers/mmc/host/sdhci.c
> @@ -2943,7 +2943,7 @@ int sdhci_add_host(struct sdhci_host *host)
>
> mmc->max_discard_to = (1 << 27) / host->timeout_clk;
>
> - mmc->caps |= MMC_CAP_SDIO_IRQ | MMC_CAP_ERASE | MMC_CAP_CMD23;
> + mmc->caps |= MMC_CAP_SDIO_IRQ | MMC_CAP_CMD23;
>
> if (host->quirks & SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12)
> host->flags |= SDHCI_AUTO_CMD12;
> diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
> index 99f5709..8b1bfab 100644
> --- a/include/linux/mmc/host.h
> +++ b/include/linux/mmc/host.h
> @@ -242,7 +242,6 @@ struct mmc_host {
> #define MMC_CAP_AGGRESSIVE_PM (1 << 7) /* Suspend (e)MMC/SD at idle */
> #define MMC_CAP_NONREMOVABLE (1 << 8) /* Nonremovable e.g. eMMC */
> #define MMC_CAP_WAIT_WHILE_BUSY (1 << 9) /* Waits while card is busy */
> -#define MMC_CAP_ERASE (1 << 10) /* Allow erase/trim commands */
> #define MMC_CAP_1_8V_DDR (1 << 11) /* can support */
> /* DDR mode at 1.8V */
> #define MMC_CAP_1_2V_DDR (1 << 12) /* can support */
> --
> 1.9.0.rc1.175.g0b1dcb5
>
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