diff options
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/core/sd.c | 41 | ||||
| -rw-r--r-- | drivers/mmc/host/at91_mci.c | 5 | ||||
| -rw-r--r-- | drivers/mmc/host/au1xmmc.c | 3 | ||||
| -rw-r--r-- | drivers/mmc/host/omap.c | 24 |
4 files changed, 42 insertions, 31 deletions
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index c1dfd03d559a..918477c490b0 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -15,6 +15,7 @@ #include <linux/mmc/host.h> #include <linux/mmc/card.h> #include <linux/mmc/mmc.h> +#include <linux/mmc/sd.h> #include "core.h" #include "sysfs.h" @@ -192,6 +193,16 @@ static int mmc_read_switch(struct mmc_card *card) int err; u8 *status; + if (card->scr.sda_vsn < SCR_SPEC_VER_1) + return MMC_ERR_NONE; + + if (!(card->csd.cmdclass & CCC_SWITCH)) { + printk(KERN_WARNING "%s: card lacks mandatory switch " + "function, performance might suffer.\n", + mmc_hostname(card->host)); + return MMC_ERR_NONE; + } + err = MMC_ERR_FAILED; status = kmalloc(64, GFP_KERNEL); @@ -204,10 +215,9 @@ static int mmc_read_switch(struct mmc_card *card) err = mmc_sd_switch(card, 0, 0, 1, status); if (err != MMC_ERR_NONE) { - /* - * Card not supporting high-speed will ignore the - * command. - */ + printk(KERN_WARNING "%s: problem reading switch " + "capabilities, performance might suffer.\n", + mmc_hostname(card->host)); err = MMC_ERR_NONE; goto out; } @@ -229,6 +239,12 @@ static int mmc_switch_hs(struct mmc_card *card) int err; u8 *status; + if (card->scr.sda_vsn < SCR_SPEC_VER_1) + return MMC_ERR_NONE; + + if (!(card->csd.cmdclass & CCC_SWITCH)) + return MMC_ERR_NONE; + if (!(card->host->caps & MMC_CAP_SD_HIGHSPEED)) return MMC_ERR_NONE; @@ -402,7 +418,7 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, /* * Switch to wider bus (if supported). */ - if ((host->caps && MMC_CAP_4_BIT_DATA) && + if ((host->caps & MMC_CAP_4_BIT_DATA) && (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) { err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4); if (err != MMC_ERR_NONE) @@ -411,6 +427,21 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, mmc_set_bus_width(host, MMC_BUS_WIDTH_4); } + /* + * Check if read-only switch is active. + */ + if (!oldcard) { + if (!host->ops->get_ro) { + printk(KERN_WARNING "%s: host does not " + "support reading read-only " + "switch. assuming write-enable.\n", + mmc_hostname(host)); + } else { + if (host->ops->get_ro(host)) + mmc_card_set_readonly(card); + } + } + if (!oldcard) host->card = card; diff --git a/drivers/mmc/host/at91_mci.c b/drivers/mmc/host/at91_mci.c index e37943c314cb..5b00c194b628 100644 --- a/drivers/mmc/host/at91_mci.c +++ b/drivers/mmc/host/at91_mci.c @@ -417,7 +417,7 @@ static unsigned int at91_mci_send_command(struct at91mci_host *host, struct mmc_ blocks = 0; } - if (cmd->opcode == MMC_STOP_TRANSMISSION) + if (host->flags & FL_SENT_STOP) cmdr |= AT91_MCI_TRCMD_STOP; if (host->bus_mode == MMC_BUSMODE_OPENDRAIN) @@ -563,8 +563,7 @@ static void at91mci_completed_command(struct at91mci_host *host) if (status & (AT91_MCI_RINDE | AT91_MCI_RDIRE | AT91_MCI_RCRCE | AT91_MCI_RENDE | AT91_MCI_RTOE | AT91_MCI_DCRCE | AT91_MCI_DTOE | AT91_MCI_OVRE | AT91_MCI_UNRE)) { - if ((status & AT91_MCI_RCRCE) && - ((cmd->opcode == MMC_SEND_OP_COND) || (cmd->opcode == SD_APP_OP_COND))) { + if ((status & AT91_MCI_RCRCE) && !(mmc_resp_type(cmd) & MMC_RSP_CRC)) { cmd->error = MMC_ERR_NONE; } else { diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c index f967226d7505..52b63f11ddd6 100644 --- a/drivers/mmc/host/au1xmmc.c +++ b/drivers/mmc/host/au1xmmc.c @@ -76,8 +76,7 @@ const struct { #endif }; -#define AU1XMMC_CONTROLLER_COUNT \ - (sizeof(au1xmmc_card_table) / sizeof(au1xmmc_card_table[0])) +#define AU1XMMC_CONTROLLER_COUNT (ARRAY_SIZE(au1xmmc_card_table)) /* This array stores pointers for the hosts (used by the IRQ handler) */ struct au1xmmc_host *au1xmmc_hosts[AU1XMMC_CONTROLLER_COUNT]; diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c index 1914e65d4db1..b0824a38f425 100644 --- a/drivers/mmc/host/omap.c +++ b/drivers/mmc/host/omap.c @@ -522,28 +522,10 @@ static irqreturn_t mmc_omap_irq(int irq, void *dev_id) } if (status & OMAP_MMC_STAT_CARD_ERR) { - if (host->cmd && host->cmd->opcode == MMC_STOP_TRANSMISSION) { - u32 response = OMAP_MMC_READ(host, RSP6) - | (OMAP_MMC_READ(host, RSP7) << 16); - /* STOP sometimes sets must-ignore bits */ - if (!(response & (R1_CC_ERROR - | R1_ILLEGAL_COMMAND - | R1_COM_CRC_ERROR))) { - end_command = 1; - continue; - } - } - - dev_dbg(mmc_dev(host->mmc), "card status error (CMD%d)\n", + dev_dbg(mmc_dev(host->mmc), + "ignoring card status error (CMD%d)\n", host->cmd->opcode); - if (host->cmd) { - host->cmd->error = MMC_ERR_FAILED; - end_command = 1; - } - if (host->data) { - host->data->error = MMC_ERR_FAILED; - transfer_error = 1; - } + end_command = 1; } /* |