Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc:
  sdhci: release irq during suspend
  sdhci: make isr tolerant of read errors
  mmc: require explicit support for high-speed
  ncpfs: make sure server connection survives a kill

2 files changed, 71 insertions, 51 deletions

diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 5046a166134..4a73e8b2428 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -376,10 +376,11 @@ static inline void mmc_set_ios(struct mmc_host *host)
 {
 	struct mmc_ios *ios = &host->ios;
 
-	pr_debug("%s: clock %uHz busmode %u powermode %u cs %u Vdd %u width %u\n",
+	pr_debug("%s: clock %uHz busmode %u powermode %u cs %u Vdd %u "
+		"width %u timing %u\n",
 		 mmc_hostname(host), ios->clock, ios->bus_mode,
 		 ios->power_mode, ios->chip_select, ios->vdd,
-		 ios->bus_width);
+		 ios->bus_width, ios->timing);
 
 	host->ops->set_ios(host, ios);
 }
@@ -809,6 +810,7 @@ static void mmc_power_up(struct mmc_host *host)
 	host->ios.chip_select = MMC_CS_DONTCARE;
 	host->ios.power_mode = MMC_POWER_UP;
 	host->ios.bus_width = MMC_BUS_WIDTH_1;
+	host->ios.timing = MMC_TIMING_LEGACY;
 	mmc_set_ios(host);
 
 	mmc_delay(1);
@@ -828,6 +830,7 @@ static void mmc_power_off(struct mmc_host *host)
 	host->ios.chip_select = MMC_CS_DONTCARE;
 	host->ios.power_mode = MMC_POWER_OFF;
 	host->ios.bus_width = MMC_BUS_WIDTH_1;
+	host->ios.timing = MMC_TIMING_LEGACY;
 	mmc_set_ios(host);
 }
 
@@ -1112,46 +1115,50 @@ static void mmc_process_ext_csds(struct mmc_host *host)
 			continue;
 		}
 
-		/* Activate highspeed support. */
-		cmd.opcode = MMC_SWITCH;
-		cmd.arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
-			  (EXT_CSD_HS_TIMING << 16) |
-			  (1 << 8) |
-			  EXT_CSD_CMD_SET_NORMAL;
-		cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
+		if (host->caps & MMC_CAP_MMC_HIGHSPEED) {
+			/* Activate highspeed support. */
+			cmd.opcode = MMC_SWITCH;
+			cmd.arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
+				  (EXT_CSD_HS_TIMING << 16) |
+				  (1 << 8) |
+				  EXT_CSD_CMD_SET_NORMAL;
+			cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
 
-		err = mmc_wait_for_cmd(host, &cmd, CMD_RETRIES);
-		if (err != MMC_ERR_NONE) {
-			printk("%s: failed to switch card to mmc v4 "
-			       "high-speed mode.\n",
-			       mmc_hostname(card->host));
-			continue;
-		}
+			err = mmc_wait_for_cmd(host, &cmd, CMD_RETRIES);
+			if (err != MMC_ERR_NONE) {
+				printk("%s: failed to switch card to mmc v4 "
+				       "high-speed mode.\n",
+				       mmc_hostname(card->host));
+				continue;
+			}
 
-		mmc_card_set_highspeed(card);
+			mmc_card_set_highspeed(card);
 
-		/* Check for host support for wide-bus modes. */
-		if (!(host->caps & MMC_CAP_4_BIT_DATA)) {
-			continue;
+			host->ios.timing = MMC_TIMING_SD_HS;
+			mmc_set_ios(host);
 		}
 
-		/* Activate 4-bit support. */
-		cmd.opcode = MMC_SWITCH;
-		cmd.arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
-			  (EXT_CSD_BUS_WIDTH << 16) |
-			  (EXT_CSD_BUS_WIDTH_4 << 8) |
-			  EXT_CSD_CMD_SET_NORMAL;
-		cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
+		/* Check for host support for wide-bus modes. */
+		if (host->caps & MMC_CAP_4_BIT_DATA) {
+			/* Activate 4-bit support. */
+			cmd.opcode = MMC_SWITCH;
+			cmd.arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
+				  (EXT_CSD_BUS_WIDTH << 16) |
+				  (EXT_CSD_BUS_WIDTH_4 << 8) |
+				  EXT_CSD_CMD_SET_NORMAL;
+			cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
 
-		err = mmc_wait_for_cmd(host, &cmd, CMD_RETRIES);
-		if (err != MMC_ERR_NONE) {
-			printk("%s: failed to switch card to "
-			       "mmc v4 4-bit bus mode.\n",
-			       mmc_hostname(card->host));
-			continue;
-		}
+			err = mmc_wait_for_cmd(host, &cmd, CMD_RETRIES);
+			if (err != MMC_ERR_NONE) {
+				printk("%s: failed to switch card to "
+				       "mmc v4 4-bit bus mode.\n",
+				       mmc_hostname(card->host));
+				continue;
+			}
 
-		host->ios.bus_width = MMC_BUS_WIDTH_4;
+			host->ios.bus_width = MMC_BUS_WIDTH_4;
+			mmc_set_ios(host);
+		}
 	}
 
 	kfree(ext_csd);
@@ -1241,6 +1248,9 @@ static void mmc_read_switch_caps(struct mmc_host *host)
 	unsigned char *status;
 	struct scatterlist sg;
 
+	if (!(host->caps & MMC_CAP_SD_HIGHSPEED))
+		return;
+
 	status = kmalloc(64, GFP_KERNEL);
 	if (!status) {
 		printk(KERN_WARNING "%s: Unable to allocate buffer for "
@@ -1332,6 +1342,9 @@ static void mmc_read_switch_caps(struct mmc_host *host)
 		}
 
 		mmc_card_set_highspeed(card);
+
+		host->ios.timing = MMC_TIMING_SD_HS;
+		mmc_set_ios(host);
 	}
 
 	kfree(status);
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index 7522f76b15e..d749f08601b 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -606,7 +606,6 @@ static void sdhci_finish_command(struct sdhci_host *host)
 static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
 {
 	int div;
-	u8 ctrl;
 	u16 clk;
 	unsigned long timeout;
 
@@ -615,13 +614,6 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
 
 	writew(0, host->ioaddr + SDHCI_CLOCK_CONTROL);
 
-	ctrl = readb(host->ioaddr + SDHCI_HOST_CONTROL);
-	if (clock > 25000000)
-		ctrl |= SDHCI_CTRL_HISPD;
-	else
-		ctrl &= ~SDHCI_CTRL_HISPD;
-	writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL);
-
 	if (clock == 0)
 		goto out;
 
@@ -761,10 +753,17 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 		sdhci_set_power(host, ios->vdd);
 
 	ctrl = readb(host->ioaddr + SDHCI_HOST_CONTROL);
+
 	if (ios->bus_width == MMC_BUS_WIDTH_4)
 		ctrl |= SDHCI_CTRL_4BITBUS;
 	else
 		ctrl &= ~SDHCI_CTRL_4BITBUS;
+
+	if (ios->timing == MMC_TIMING_SD_HS)
+		ctrl |= SDHCI_CTRL_HISPD;
+	else
+		ctrl &= ~SDHCI_CTRL_HISPD;
+
 	writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL);
 
 	mmiowb();
@@ -994,7 +993,7 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
 
 	intmask = readl(host->ioaddr + SDHCI_INT_STATUS);
 
-	if (!intmask) {
+	if (!intmask || intmask == 0xffffffff) {
 		result = IRQ_NONE;
 		goto out;
 	}
@@ -1080,6 +1079,13 @@ static int sdhci_suspend (struct pci_dev *pdev, pm_message_t state)
 
 	pci_save_state(pdev);
 	pci_enable_wake(pdev, pci_choose_state(pdev, state), 0);
+
+	for (i = 0;i < chip->num_slots;i++) {
+		if (!chip->hosts[i])
+			continue;
+		free_irq(chip->hosts[i]->irq, chip->hosts[i]);
+	}
+
 	pci_disable_device(pdev);
 	pci_set_power_state(pdev, pci_choose_state(pdev, state));
 
@@ -1108,6 +1114,11 @@ static int sdhci_resume (struct pci_dev *pdev)
 			continue;
 		if (chip->hosts[i]->flags & SDHCI_USE_DMA)
 			pci_set_master(pdev);
+		ret = request_irq(chip->hosts[i]->irq, sdhci_irq,
+			IRQF_SHARED, chip->hosts[i]->slot_descr,
+			chip->hosts[i]);
+		if (ret)
+			return ret;
 		sdhci_init(chip->hosts[i]);
 		mmiowb();
 		ret = mmc_resume_host(chip->hosts[i]->mmc);
@@ -1274,6 +1285,9 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
 	mmc->f_max = host->max_clk;
 	mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_MULTIWRITE | MMC_CAP_BYTEBLOCK;
 
+	if (caps & SDHCI_CAN_DO_HISPD)
+		mmc->caps |= MMC_CAP_SD_HIGHSPEED;
+
 	mmc->ocr_avail = 0;
 	if (caps & SDHCI_CAN_VDD_330)
 		mmc->ocr_avail |= MMC_VDD_32_33|MMC_VDD_33_34;
@@ -1282,13 +1296,6 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
 	if (caps & SDHCI_CAN_VDD_180)
 		mmc->ocr_avail |= MMC_VDD_17_18|MMC_VDD_18_19;
 
-	if ((host->max_clk > 25000000) && !(caps & SDHCI_CAN_DO_HISPD)) {
-		printk(KERN_ERR "%s: Controller reports > 25 MHz base clock,"
-			" but no high speed support.\n",
-			host->slot_descr);
-		mmc->f_max = 25000000;
-	}
-
 	if (mmc->ocr_avail == 0) {
 		printk(KERN_ERR "%s: Hardware doesn't report any "
 			"support voltages.\n", host->slot_descr);