Merge "Add the opnfv kernel config file"

[kvmfornfv.git] / kernel / drivers / mmc / host / sdhci.c

diff --git a/kernel/drivers/mmc/host/sdhci.c b/kernel/drivers/mmc/host/sdhci.c
index f09bc10..fd41b91 100644 (file)
--- a/kernel/drivers/mmc/host/sdhci.c
+++ b/kernel/drivers/mmc/host/sdhci.c
@@ -1146,6 +1146,7 @@ static u16 sdhci_get_preset_value(struct sdhci_host *host)
                preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR104);
                break;
        case MMC_TIMING_UHS_DDR50:
+       case MMC_TIMING_MMC_DDR52:
                preset = sdhci_readw(host, SDHCI_PRESET_FOR_DDR50);
                break;
        case MMC_TIMING_MMC_HS400:
@@ -1598,7 +1599,8 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
                                 (ios->timing == MMC_TIMING_UHS_SDR25) ||
                                 (ios->timing == MMC_TIMING_UHS_SDR50) ||
                                 (ios->timing == MMC_TIMING_UHS_SDR104) ||
-                                (ios->timing == MMC_TIMING_UHS_DDR50))) {
+                                (ios->timing == MMC_TIMING_UHS_DDR50) ||
+                                (ios->timing == MMC_TIMING_MMC_DDR52))) {
                        u16 preset;
 
                        sdhci_enable_preset_value(host, true);
@@ -2691,31 +2693,6 @@ static irqreturn_t sdhci_thread_irq(int irq, void *dev_id)
        return isr ? IRQ_HANDLED : IRQ_NONE;
 }
 
-#ifdef CONFIG_PREEMPT_RT_BASE
-static irqreturn_t sdhci_rt_irq(int irq, void *dev_id)
-{
-       irqreturn_t ret;
-
-       local_bh_disable();
-       ret = sdhci_irq(irq, dev_id);
-       local_bh_enable();
-       if (ret == IRQ_WAKE_THREAD)
-               ret = sdhci_thread_irq(irq, dev_id);
-       return ret;
-}
-#endif
-
-static int sdhci_req_irq(struct sdhci_host *host)
-{
-#ifdef CONFIG_PREEMPT_RT_BASE
-       return request_threaded_irq(host->irq, NULL, sdhci_rt_irq,
-                                   IRQF_SHARED, mmc_hostname(host->mmc), host);
-#else
-       return request_threaded_irq(host->irq, sdhci_irq, sdhci_thread_irq,
-                                   IRQF_SHARED, mmc_hostname(host->mmc), host);
-#endif
-}
-
 /*****************************************************************************\
  *                                                                           *
  * Suspend/resume                                                            *
@@ -2783,7 +2760,9 @@ int sdhci_resume_host(struct sdhci_host *host)
        }
 
        if (!device_may_wakeup(mmc_dev(host->mmc))) {
-               ret = sdhci_req_irq(host);
+               ret = request_threaded_irq(host->irq, sdhci_irq,
+                                          sdhci_thread_irq, IRQF_SHARED,
+                                          mmc_hostname(host->mmc), host);
                if (ret)
                        return ret;
        } else {
@@ -3060,8 +3039,11 @@ int sdhci_add_host(struct sdhci_host *host)
                                                      GFP_KERNEL);
                host->align_buffer = kmalloc(host->align_buffer_sz, GFP_KERNEL);
                if (!host->adma_table || !host->align_buffer) {
-                       dma_free_coherent(mmc_dev(mmc), host->adma_table_sz,
-                                         host->adma_table, host->adma_addr);
+                       if (host->adma_table)
+                               dma_free_coherent(mmc_dev(mmc),
+                                                 host->adma_table_sz,
+                                                 host->adma_table,
+                                                 host->adma_addr);
                        kfree(host->align_buffer);
                        pr_warn("%s: Unable to allocate ADMA buffers - falling back to standard DMA\n",
                                mmc_hostname(mmc));
@@ -3338,13 +3320,14 @@ int sdhci_add_host(struct sdhci_host *host)
                                   SDHCI_MAX_CURRENT_MULTIPLIER;
        }
 
-       /* If OCR set by external regulators, use it instead */
+       /* If OCR set by host, use it instead. */
+       if (host->ocr_mask)
+               ocr_avail = host->ocr_mask;
+
+       /* If OCR set by external regulators, give it highest prio. */
        if (mmc->ocr_avail)
                ocr_avail = mmc->ocr_avail;
 
-       if (host->ocr_mask)
-               ocr_avail &= host->ocr_mask;
-
        mmc->ocr_avail = ocr_avail;
        mmc->ocr_avail_sdio = ocr_avail;
        if (host->ocr_avail_sdio)
@@ -3440,7 +3423,8 @@ int sdhci_add_host(struct sdhci_host *host)
 
        sdhci_init(host, 0);
 
-       ret = sdhci_req_irq(host);
+       ret = request_threaded_irq(host->irq, sdhci_irq, sdhci_thread_irq,
+                                  IRQF_SHARED, mmc_hostname(mmc), host);
        if (ret) {
                pr_err("%s: Failed to request IRQ %d: %d\n",
                       mmc_hostname(mmc), host->irq, ret);