Remove host erase capacity check to enable trim and
discard feature in supported eMMC device.
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 ---
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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