diff options
| author | liwei <liwei213@huawei.com> | 2017-08-11 16:06:23 +0800 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2017-08-30 14:01:56 +0200 |
| commit | 941e372d89c253fda457fd6267a2c05dd7598df0 (patch) | |
| tree | 3dc74430ccbd73105467700d6f3813f824088787 /drivers/mmc/host/dw_mmc.c | |
| parent | a2bc74cfee87bdf0f656ada0e5deed6237f31eaf (diff) | |
| download | linux-941e372d89c253fda457fd6267a2c05dd7598df0.tar.bz2 | |
mmc: dw_mmc: move controller reset before driver init
This commit modifies dw_mci_probe(), it moves reset assertion before
drv_data->init(host)
Some driver needs to access controller registers in its .init() ops. So,
in order to make such access safe, we should do controller reset before
.init() being called.
Signed-off-by: Wei Li <liwei213@huawei.com>
Signed-off-by: Guodong Xu <guodong.xu@linaro.org>
Signed-off-by: Chen Jun <chenjun14@huawei.com>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/dw_mmc.c')
| -rw-r--r-- | drivers/mmc/host/dw_mmc.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index b9640c7ac1cc..5ccf46501ce1 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -3067,6 +3067,12 @@ int dw_mci_probe(struct dw_mci *host) goto err_clk_ciu; } + if (!IS_ERR(host->pdata->rstc)) { + reset_control_assert(host->pdata->rstc); + usleep_range(10, 50); + reset_control_deassert(host->pdata->rstc); + } + if (drv_data && drv_data->init) { ret = drv_data->init(host); if (ret) { @@ -3076,12 +3082,6 @@ int dw_mci_probe(struct dw_mci *host) } } - if (!IS_ERR(host->pdata->rstc)) { - reset_control_assert(host->pdata->rstc); - usleep_range(10, 50); - reset_control_deassert(host->pdata->rstc); - } - setup_timer(&host->cmd11_timer, dw_mci_cmd11_timer, (unsigned long)host); |