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Date: Tue, 1 Mar 2016 15:12:53 +0800 From: Shawn Lin <shawn.lin@...k-chips.com> To: Jaehoon Chung <jh80.chung@...sung.com>, Ulf Hansson <ulf.hansson@...aro.org> Cc: linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org, linux-rockchip@...ts.infradead.org, Shawn Lin <shawn.lin@...k-chips.com> Subject: [PATCH] mmc: dw_mmc-rockchip: fix failing to mount partition with "discard" Without MMC_CAP_ERASE support, we fail to mount partition with "discard" option since mmc_queue_setup_discard is limited for checking mmc_can_erase. Without doing mmc_queue_setup_discard, blk_queue_discard fails to test QUEUE_FLAG_DISCARD flag, so we get the following log from f2fs(actually similar to other file system): mounting with "discard" option, but the device does not support discard Signed-off-by: Shawn Lin <shawn.lin@...k-chips.com> --- drivers/mmc/host/dw_mmc-rockchip.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/mmc/host/dw_mmc-rockchip.c b/drivers/mmc/host/dw_mmc-rockchip.c index 84e50f3..2eda118 100644 --- a/drivers/mmc/host/dw_mmc-rockchip.c +++ b/drivers/mmc/host/dw_mmc-rockchip.c @@ -234,11 +234,20 @@ static int dw_mci_rockchip_init(struct dw_mci *host) return 0; } +/* Common capabilities of RK3288 SoC */ +static unsigned long dw_mci_rk3288_dwmmc_caps[4] = { + MMC_CAP_ERASE, + MMC_CAP_ERASE, + MMC_CAP_ERASE, + MMC_CAP_ERASE, +}; + static const struct dw_mci_drv_data rk2928_drv_data = { .init = dw_mci_rockchip_init, }; static const struct dw_mci_drv_data rk3288_drv_data = { + .caps = dw_mci_rk3288_dwmmc_caps, .set_ios = dw_mci_rk3288_set_ios, .execute_tuning = dw_mci_rk3288_execute_tuning, .parse_dt = dw_mci_rk3288_parse_dt, -- 2.3.7
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