mmc: host: Drop redundant MMC_CAP_ERASE

The MMC_CAP_ERASE bit is no longer used by the mmc core as erase, discard
and trim operations are now always supported. Therefore, drop the bit and
move all mmc hosts away from using it.

Signed-off-by: Ulf Hansson <[e-mail]>
Reviewed-by: Rui Miguel Silva <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Reviewed-by: Linus Walleij <[e-mail]>

drivers/mmc/host/bcm2835.c

···
 
 	/* host controller capabilities */
 	mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED |
-		     MMC_CAP_NEEDS_POLL | MMC_CAP_HW_RESET | MMC_CAP_ERASE |
-		     MMC_CAP_CMD23;
+		     MMC_CAP_NEEDS_POLL | MMC_CAP_HW_RESET | MMC_CAP_CMD23;
 
 	spin_lock_init(&host->lock);
 	mutex_init(&host->mutex);

drivers/mmc/host/cavium.c

···
 	 * Disable bounce buffers for max_segs = 1
 	 */
 	mmc->caps |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED |
-		     MMC_CAP_ERASE | MMC_CAP_CMD23 | MMC_CAP_POWER_OFF_CARD |
-		     MMC_CAP_3_3V_DDR;
+		     MMC_CAP_CMD23 | MMC_CAP_POWER_OFF_CARD | MMC_CAP_3_3V_DDR;
 
 	if (host->use_sg)
 		mmc->max_segs = 16;

drivers/mmc/host/dw_mmc.c

···
 	if (host->pdata->caps)
 		mmc->caps = host->pdata->caps;
 
-	/*
-	 * Support MMC_CAP_ERASE by default.
-	 * It needs to use trim/discard/erase commands.
-	 */
-	mmc->caps |= MMC_CAP_ERASE;
-
 	if (host->pdata->pm_caps)
 		mmc->pm_caps = host->pdata->pm_caps;
 

drivers/mmc/host/meson-mx-sdio.c

···
 	mmc->f_max = clk_round_rate(host->cfg_div_clk,
 				    clk_get_rate(host->parent_clk));
 
-	mmc->caps |= MMC_CAP_ERASE | MMC_CAP_CMD23 | MMC_CAP_WAIT_WHILE_BUSY;
+	mmc->caps |= MMC_CAP_CMD23 | MMC_CAP_WAIT_WHILE_BUSY;
 	mmc->ops = &meson_mx_mmc_ops;
 
 	ret = mmc_of_parse(mmc);

drivers/mmc/host/mtk-sd.c

···
 	if (mmc->caps & MMC_CAP_SDIO_IRQ)
 		mmc->caps2 |= MMC_CAP2_SDIO_IRQ_NOTHREAD;
 
-	mmc->caps |= MMC_CAP_ERASE | MMC_CAP_CMD23;
+	mmc->caps |= MMC_CAP_CMD23;
 	/* MMC core transfer sizes tunable parameters */
 	mmc->max_segs = MAX_BD_NUM;
 	if (host->dev_comp->support_64g)

drivers/mmc/host/mvsdio.c

···
 	if (maxfreq)
 		mmc->f_max = maxfreq;
 
-	mmc->caps |= MMC_CAP_ERASE;
-
 	spin_lock_init(&host->lock);
 
 	host->base = devm_platform_ioremap_resource(pdev, 0);

drivers/mmc/host/mxs-mmc.c

···
 	/* set mmc core parameters */
 	mmc->ops = &mxs_mmc_ops;
 	mmc->caps = MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED |
-		    MMC_CAP_SDIO_IRQ | MMC_CAP_NEEDS_POLL | MMC_CAP_CMD23 |
-		    MMC_CAP_ERASE;
+		    MMC_CAP_SDIO_IRQ | MMC_CAP_NEEDS_POLL | MMC_CAP_CMD23;
 
 	host->broken_cd = of_property_read_bool(np, "broken-cd");
 

drivers/mmc/host/omap.c

···
 
 	mmc->caps = 0;
 	if (host->pdata->slots[id].wires >= 4)
-		mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_ERASE;
+		mmc->caps |= MMC_CAP_4_BIT_DATA;
 
 	mmc->ops = &mmc_omap_ops;
 	mmc->f_min = 400000;

drivers/mmc/host/omap_hsmmc.c

···
 	mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
 
 	mmc->caps |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED |
-		     MMC_CAP_WAIT_WHILE_BUSY | MMC_CAP_ERASE | MMC_CAP_CMD23;
+		     MMC_CAP_WAIT_WHILE_BUSY | MMC_CAP_CMD23;
 
 	mmc->caps |= mmc_pdata(host)->caps;
 	if (mmc->caps & MMC_CAP_8_BIT_DATA)

drivers/mmc/host/rtsx_pci_sdmmc.c

···
 	mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
 	mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SD_HIGHSPEED |
 		MMC_CAP_MMC_HIGHSPEED | MMC_CAP_BUS_WIDTH_TEST |
-		MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | MMC_CAP_ERASE;
+		MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25;
 	mmc->caps2 = MMC_CAP2_NO_PRESCAN_POWERUP | MMC_CAP2_FULL_PWR_CYCLE;
 	mmc->max_current_330 = 400;
 	mmc->max_current_180 = 800;

drivers/mmc/host/rtsx_usb_sdmmc.c

···
 	mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SD_HIGHSPEED |
 		MMC_CAP_MMC_HIGHSPEED | MMC_CAP_BUS_WIDTH_TEST |
 		MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | MMC_CAP_UHS_SDR50 |
-		MMC_CAP_ERASE | MMC_CAP_SYNC_RUNTIME_PM;
+		MMC_CAP_SYNC_RUNTIME_PM;
 	mmc->caps2 = MMC_CAP2_NO_PRESCAN_POWERUP | MMC_CAP2_FULL_PWR_CYCLE |
 		MMC_CAP2_NO_SDIO;
 

drivers/mmc/host/sdhci.c

···
 	    !host->ops->get_max_timeout_count)
 		mmc->max_busy_timeout = 0;
 
-	mmc->caps |= MMC_CAP_SDIO_IRQ | MMC_CAP_ERASE | MMC_CAP_CMD23;
+	mmc->caps |= MMC_CAP_SDIO_IRQ | MMC_CAP_CMD23;
 	mmc->caps2 |= MMC_CAP2_SDIO_IRQ_NOTHREAD;
 
 	if (host->quirks & SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12)

drivers/mmc/host/sunxi-mmc.c

···
 	mmc->f_min		=   400000;
 	mmc->f_max		= 52000000;
 	mmc->caps	       |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED |
-				  MMC_CAP_ERASE | MMC_CAP_SDIO_IRQ;
+				  MMC_CAP_SDIO_IRQ;
 
 	/*
 	 * Some H5 devices do not have signal traces precise enough to

drivers/mmc/host/tmio_mmc_core.c

···
 	if (ret == -EPROBE_DEFER)
 		return ret;
 
-	mmc->caps |= MMC_CAP_ERASE | MMC_CAP_4_BIT_DATA | pdata->capabilities;
+	mmc->caps |= MMC_CAP_4_BIT_DATA | pdata->capabilities;
 	mmc->caps2 |= pdata->capabilities2;
 	mmc->max_segs = pdata->max_segs ? : 32;
 	mmc->max_blk_size = TMIO_MAX_BLK_SIZE;

drivers/staging/greybus/sdio.c

···
 		((r & GB_SDIO_CAP_8_BIT_DATA) ? MMC_CAP_8_BIT_DATA : 0) |
 		((r & GB_SDIO_CAP_MMC_HS) ? MMC_CAP_MMC_HIGHSPEED : 0) |
 		((r & GB_SDIO_CAP_SD_HS) ? MMC_CAP_SD_HIGHSPEED : 0) |
-		((r & GB_SDIO_CAP_ERASE) ? MMC_CAP_ERASE : 0) |
 		((r & GB_SDIO_CAP_1_2V_DDR) ? MMC_CAP_1_2V_DDR : 0) |
 		((r & GB_SDIO_CAP_1_8V_DDR) ? MMC_CAP_1_8V_DDR : 0) |
 		((r & GB_SDIO_CAP_POWER_OFF_CARD) ? MMC_CAP_POWER_OFF_CARD : 0) |

include/linux/mmc/host.h

···
 #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_3_3V_DDR	(1 << 11)	/* Host supports eMMC DDR 3.3V */
 #define MMC_CAP_1_8V_DDR	(1 << 12)	/* Host supports eMMC DDR 1.8V */
 #define MMC_CAP_1_2V_DDR	(1 << 13)	/* Host supports eMMC DDR 1.2V */