diff options
| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2018-01-17 19:28:01 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2018-01-18 11:08:56 +0300 |
| commit | 8d09a13386ccdee8fb6d66aa2cfedbbc9255f892 (patch) | |
| tree | 6fdde1ef07579de4e1709f2bc14d10299dda8a66 /drivers/mmc/host/tmio_mmc_core.c | |
| parent | 659032dcb9f11c3bd2a3a23db76e6a70b3ddec79 (diff) | |
| download | linux-8d09a13386ccdee8fb6d66aa2cfedbbc9255f892.tar.xz | |
mmc: tmio: ioremap memory resource in tmio_mmc_host_alloc()
The register region is ioremap'ed in the tmio_mmc_host_probe(), i.e.
drivers cannot get access to the hardware before mmc_add_host().
Actually, renesas_sdhi_core.c reads out the CTL_VERSION register to
complete the platform-specific settings. However, at this point,
the MMC host is already running.
Move the register ioremap to tmio_mmc_host_alloc() so that drivers
can perform platform-specific settings between tmio_mmc_host_alloc()
and tmio_mmc_host_probe().
I changed tmio_mmc_host_alloc() to return an error pointer to
propagate the return code from devm_ioremap_resource().
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/tmio_mmc_core.c')
| -rw-r--r-- | drivers/mmc/host/tmio_mmc_core.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/mmc/host/tmio_mmc_core.c b/drivers/mmc/host/tmio_mmc_core.c index 0929b987fb29..4f62ce6664e0 100644 --- a/drivers/mmc/host/tmio_mmc_core.c +++ b/drivers/mmc/host/tmio_mmc_core.c @@ -1150,12 +1150,20 @@ tmio_mmc_host_alloc(struct platform_device *pdev) { struct tmio_mmc_host *host; struct mmc_host *mmc; + struct resource *res; + void __iomem *ctl; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + ctl = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(ctl)) + return ERR_CAST(ctl); mmc = mmc_alloc_host(sizeof(struct tmio_mmc_host), &pdev->dev); if (!mmc) - return NULL; + return ERR_PTR(-ENOMEM); host = mmc_priv(mmc); + host->ctl = ctl; host->mmc = mmc; host->pdev = pdev; host->ops = tmio_mmc_ops; @@ -1177,7 +1185,6 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host, { struct platform_device *pdev = _host->pdev; struct mmc_host *mmc = _host->mmc; - struct resource *res_ctl; int ret; u32 irq_mask = TMIO_MASK_CMD; @@ -1186,11 +1193,6 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host, if (!(pdata->flags & TMIO_MMC_HAS_IDLE_WAIT)) _host->write16_hook = NULL; - res_ctl = platform_get_resource(pdev, IORESOURCE_MEM, 0); - _host->ctl = devm_ioremap_resource(&pdev->dev, res_ctl); - if (IS_ERR(_host->ctl)) - return PTR_ERR(_host->ctl); - ret = mmc_of_parse(mmc); if (ret < 0) return ret; |