From f7f0f03506d00fc2939a8625ed141c2dda568fad Mon Sep 17 00:00:00 2001 From: Andreas Fenkart Date: Tue, 7 Jul 2015 20:38:43 +0200 Subject: [PATCH] mmc: omap_hsmmc: call omap_hsmmc_set_power directly If no pdata.set_power was set by the platform code, the driver was updating pdata with its own fallback function. This is a no-no since pdata shall be read-only. This patch pushes the check 'pdata->set_power != NULL' down into the fallback functions. If pdata.set_power is really set, it calls them and exits, otherwise the fallback code is used. Signed-off-by: Andreas Fenkart Signed-off-by: Ulf Hansson --- drivers/mmc/host/omap_hsmmc.c | 37 +++++++++++++++++++++-------------- 1 file changed, 22 insertions(+), 15 deletions(-) diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index 4d1203236890..1fad7c746bc3 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -213,7 +213,6 @@ struct omap_hsmmc_host { int context_loss; int protect_card; int reqs_blocked; - int use_reg; int req_in_progress; unsigned long clk_rate; unsigned int flags; @@ -262,6 +261,9 @@ static int omap_hsmmc_set_power(struct device *dev, int power_on, int vdd) platform_get_drvdata(to_platform_device(dev)); int ret = 0; + if (mmc_pdata(host)->set_power) + return mmc_pdata(host)->set_power(dev, power_on, vdd); + /* * If we don't see a Vcc regulator, assume it's a fixed * voltage always-on regulator. @@ -344,6 +346,9 @@ static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host) struct regulator *reg; int ocr_value = 0; + if (mmc_pdata(host)->set_power) + return 0; + reg = devm_regulator_get(host->dev, "vmmc"); if (IS_ERR(reg)) { dev_err(host->dev, "unable to get vmmc regulator %ld\n", @@ -363,7 +368,6 @@ static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host) } } } - mmc_pdata(host)->set_power = omap_hsmmc_set_power; /* Allow an aux regulator */ reg = devm_regulator_get_optional(host->dev, "vmmc_aux"); @@ -383,8 +387,8 @@ static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host) (host->vcc_aux && regulator_is_enabled(host->vcc_aux))) { int vdd = ffs(mmc_pdata(host)->ocr_mask) - 1; - mmc_pdata(host)->set_power(host->dev, 1, vdd); - mmc_pdata(host)->set_power(host->dev, 0, 0); + omap_hsmmc_set_power(host->dev, 1, vdd); + omap_hsmmc_set_power(host->dev, 0, 0); } return 0; @@ -392,7 +396,8 @@ static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host) static void omap_hsmmc_reg_put(struct omap_hsmmc_host *host) { - mmc_pdata(host)->set_power = NULL; + if (mmc_pdata(host)->set_power) + return; } static inline int omap_hsmmc_have_reg(void) @@ -402,6 +407,11 @@ static inline int omap_hsmmc_have_reg(void) #else +static int omap_hsmmc_set_power(struct device *dev, int power_on, int vdd) +{ + return 0; +} + static inline int omap_hsmmc_reg_get(struct omap_hsmmc_host *host) { return -EINVAL; @@ -1149,11 +1159,11 @@ static int omap_hsmmc_switch_opcond(struct omap_hsmmc_host *host, int vdd) clk_disable_unprepare(host->dbclk); /* Turn the power off */ - ret = mmc_pdata(host)->set_power(host->dev, 0, 0); + ret = omap_hsmmc_set_power(host->dev, 0, 0); /* Turn the power ON with given VDD 1.8 or 3.0v */ if (!ret) - ret = mmc_pdata(host)->set_power(host->dev, 1, vdd); + ret = omap_hsmmc_set_power(host->dev, 1, vdd); pm_runtime_get_sync(host->dev); if (host->dbclk) clk_prepare_enable(host->dbclk); @@ -1552,10 +1562,10 @@ static void omap_hsmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) if (ios->power_mode != host->power_mode) { switch (ios->power_mode) { case MMC_POWER_OFF: - mmc_pdata(host)->set_power(host->dev, 0, 0); + omap_hsmmc_set_power(host->dev, 0, 0); break; case MMC_POWER_UP: - mmc_pdata(host)->set_power(host->dev, 1, ios->vdd); + omap_hsmmc_set_power(host->dev, 1, ios->vdd); break; case MMC_POWER_ON: do_send_init_stream = 1; @@ -2078,11 +2088,10 @@ static int omap_hsmmc_probe(struct platform_device *pdev) goto err_irq; } - if (omap_hsmmc_have_reg() && !mmc_pdata(host)->set_power) { + if (omap_hsmmc_have_reg()) { ret = omap_hsmmc_reg_get(host); if (ret) goto err_irq; - host->use_reg = 1; } mmc->ocr_avail = mmc_pdata(host)->ocr_mask; @@ -2125,8 +2134,7 @@ static int omap_hsmmc_probe(struct platform_device *pdev) err_slot_name: mmc_remove_host(mmc); - if (host->use_reg) - omap_hsmmc_reg_put(host); + omap_hsmmc_reg_put(host); err_irq: device_init_wakeup(&pdev->dev, false); if (host->tx_chan) @@ -2150,8 +2158,7 @@ static int omap_hsmmc_remove(struct platform_device *pdev) pm_runtime_get_sync(host->dev); mmc_remove_host(host->mmc); - if (host->use_reg) - omap_hsmmc_reg_put(host); + omap_hsmmc_reg_put(host); if (host->tx_chan) dma_release_channel(host->tx_chan); -- 2.20.1